Complete the semantic reconciliation roadmap

assets/dnd/entity-reconciliation/schemas/dnd_entity_reconcile_llm.v1.json

@@ -1,47 +0,0 @@
-{
-  "$schema": "https://json-schema.org/draft/2020-12/schema",
-  "$id": "notarius.dnd.entity_reconcile.llm",
-  "type": "object",
-  "additionalProperties": false,
-  "required": ["duplicate_groups"],
-  "properties": {
-    "duplicate_groups": {
-      "type": "array",
-      "items": {
-        "type": "object",
-        "additionalProperties": false,
-        "required": ["members", "canonical"],
-        "properties": {
-          "members": {
-            "type": "array",
-            "items": {"$ref": "#/$defs/selector"}
-          },
-          "canonical": {"$ref": "#/$defs/selector"}
-        }
-      }
-    }
-  },
-  "$defs": {
-    "selector": {
-      "type": "object",
-      "additionalProperties": false,
-      "required": ["name", "source_refs"],
-      "properties": {
-        "name": {"type": "string", "minLength": 1},
-        "source_refs": {
-          "type": "array",
-          "minItems": 1,
-          "items": {
-            "type": "object",
-            "additionalProperties": false,
-            "required": ["start_unit_id", "end_unit_id"],
-            "properties": {
-              "start_unit_id": {"type": "integer", "minimum": 1},
-              "end_unit_id": {"type": "integer", "minimum": 1}
-            }
-          }
-        }
-      }
-    }
-  }
-}

assets/dnd/item-registry/normalize/prompts/instructions.md

@@ -1,8 +1,9 @@
-Use candidate names and cited transcript windows only to determine whether
-candidates identify the same item type or unique designation. Do not treat
-nearby evidence, similar objects, or a shared owner as sufficient. Keep
-currency denominations, materially different item types, and uncertain aliases
-separate. Do not infer an item property or uniqueness.
+Determine whether candidates identify the same item type or unique designation
+using their contextual labels and cited transcript windows. Do not treat nearby
+evidence, similar objects, or a shared owner as sufficient.
+
+Keep currency denominations and materially different item types separate. Keep
+uncertain aliases separate. Do not infer an item property or uniqueness.
 
 When selecting a canonical display name, choose one supplied candidate name
 that is the clearest established designation.

assets/dnd/item-registry/normalize/prompts/prompt.yaml

@@ -12,19 +12,19 @@ messages:
   - role: system
     content_file: ./sharedassets/common-dnd-system.md
   - role: user
-    content_file: ./instructions.md
+    content_file: ./sharedassets/protocol.md
   - role: user
-    content_file: ./sharedassets/common-dnd-entity-reconciliation.md
+    content_file: ./instructions.md
     cache_control:
       type: ephemeral
   - role: user
-    content_file: ./candidates.md
+    content_file: ./sharedassets/candidates.md
   - role: user
-    content_file: ./sharedassets/common-dnd-transcript-windows.md
+    content_file: ./sharedassets/transcript-windows.md
     cache_control:
       type: ephemeral
 output:
   format: json
   validation_mode: json_schema
-  schema_path: dnd_entity_reconcile_llm.v1.json
+  schema_path: semantic_reconciliation_llm.v1.json
   repair_attempts: 0

assets/dnd/location-registry/normalize/prompts/candidates.md

@@ -1,2 +0,0 @@
-Location candidates:
-{{ input "candidates" }}

assets/dnd/location-registry/normalize/prompts/instructions.md

@@ -1,6 +1,8 @@
-Use candidate names and their cited transcript windows to determine whether
-candidates identify the same physical place. Do not treat matching names,
-nearby evidence, nested places, or generic labels as sufficient. Keep parent
-and child places, similarly named places, and uncertain aliases separate.
+Determine whether candidates identify the same physical place using their
+contextual labels and cited transcript windows. Do not treat matching names,
+nearby evidence, nested places, or generic labels as sufficient.
+
+Keep parent and child places separate, as well as similarly named places and
+uncertain aliases.
 
 When selecting a canonical display name, prefer the clearest established name.

assets/dnd/location-registry/normalize/prompts/prompt.yaml

@@ -12,19 +12,19 @@ messages:
   - role: system
     content_file: ./sharedassets/common-dnd-system.md
   - role: user
-    content_file: ./instructions.md
+    content_file: ./sharedassets/protocol.md
   - role: user
-    content_file: ./sharedassets/common-dnd-entity-reconciliation.md
+    content_file: ./instructions.md
     cache_control:
       type: ephemeral
   - role: user
-    content_file: ./candidates.md
+    content_file: ./sharedassets/candidates.md
   - role: user
-    content_file: ./sharedassets/common-dnd-transcript-windows.md
+    content_file: ./sharedassets/transcript-windows.md
     cache_control:
       type: ephemeral
 output:
   format: json
   validation_mode: json_schema
-  schema_path: dnd_entity_reconcile_llm.v1.json
+  schema_path: semantic_reconciliation_llm.v1.json
   repair_attempts: 0

assets/dnd/npc-registry/normalize/prompts/candidates.md

@@ -1,3 +0,0 @@
-NPC candidates for identity comparison:
-
-{{ input "candidates" }}

assets/dnd/npc-registry/normalize/prompts/instructions.md

@@ -1,6 +1,7 @@
-Use candidate aliases and their cited transcript windows to determine whether
-candidates refer to the same individual. Preserve distinct individuals even
-when their names are similar.
+Determine whether candidates refer to the same individual using their
+contextual labels and cited transcript windows. Preserve distinct individuals
+even when their names are similar or their contextual descriptions are
+identical.
 
 When selecting a canonical display name, prefer a complete, stable proper name
 over an abbreviation. Prefer an unadorned proper name over that name plus a

assets/dnd/npc-registry/normalize/prompts/prompt.yaml

@@ -12,19 +12,19 @@ messages:
   - role: system
     content_file: ./sharedassets/common-dnd-system.md
   - role: user
-    content_file: ./instructions.md
+    content_file: ./sharedassets/protocol.md
   - role: user
-    content_file: ./sharedassets/common-dnd-entity-reconciliation.md
+    content_file: ./instructions.md
     cache_control:
       type: ephemeral
   - role: user
-    content_file: ./candidates.md
+    content_file: ./sharedassets/candidates.md
   - role: user
-    content_file: ./sharedassets/common-dnd-transcript-windows.md
+    content_file: ./sharedassets/transcript-windows.md
     cache_control:
       type: ephemeral
 output:
   format: json
   validation_mode: json_schema
-  schema_path: dnd_entity_reconcile_llm.v1.json
+  schema_path: semantic_reconciliation_llm.v1.json
   repair_attempts: 0

assets/dnd/shared/prompts/common-dnd-entity-reconciliation.md

@@ -1,7 +0,0 @@
-Identify only well-supported duplicate groups among the supplied candidates.
-
-Return each selected candidate's supplied contextual descriptor exactly: its
-`name` and complete ordered `source_refs`. A group must contain at least two
-supplied descriptors, and its `canonical` descriptor must be one of its
-members. Do not invent names, ranges, records, evidence, or replacement values.
-Omit any uncertain or unsafe group.

assets/dnd/shared/prompts/common-dnd-transcript-windows.md

@@ -1,6 +0,0 @@
-Selected Dungeons & Dragons gameplay transcript evidence windows are provided
-below. They may be incomplete, non-contiguous, or overlapping. Use them to
-evaluate candidate identity, but do not treat absence outside these windows as
-evidence.
-
-{{ input "transcript" }}

assets/generic/normalize/deduplication/candidates.md

@@ -1,3 +0,0 @@
-Candidates for identity comparison:
-
-{{ input "candidates" }}

assets/generic/normalize/deduplication/instructions.md

@@ -1,5 +0,0 @@
-Your task is to identify duplicate entities withi the provided list of candidates.
-
-Please review the listed candidates and their underlying evidence, and determine whether any of the listed candidates refer to the same underlying entity. Preserve distinct candidates that appear to refer to different underlying entities, even when their names are similar.
-
-When selecting a canonical display name, prefer a complete, stable proper name over an abbreviation. Prefer an unadorned proper name over that name plus additional descriptors, unless the underlying evidence stablishes the descriptors as part of the entity's name. A longer display name is not inherently more canonical.

assets/generic/normalize/deduplication/prompts/candidates.md

@@ -1,2 +1,3 @@
-Item candidates:
+Candidate material:
+
 {{ input "candidates" }}

assets/generic/normalize/deduplication/prompts/instructions.md

@@ -0,0 +1,5 @@
+Identify only high-confidence duplicate entities among the supplied candidates.
+
+Preserve distinct entities even when their names are similar. Treat contextual descriptions and transcript evidence as supporting material, not as permission to merge ambiguous records.
+
+When several records are duplicates, choose as canonical the candidate with the clearest stable identity. Prefer a complete proper name over an abbreviation, and prefer an unadorned proper name over one with incidental descriptors unless the evidence establishes those descriptors as part of the name. A longer name is not inherently more canonical.

assets/generic/normalize/deduplication/prompts/prompt.yaml

@@ -0,0 +1,27 @@
+id: generic.semantic_reconciliation
+version: "v1"
+inputs:
+  - name: candidates
+    required: true
+    content_type: application/json
+  - name: transcript
+    required: true
+    content_type: application/json
+messages:
+  - role: system
+    content_file: ./system.md
+  - role: user
+    content_file: ./protocol.md
+  - role: user
+    content_file: ./instructions.md
+    cache_control:
+      type: ephemeral
+  - role: user
+    content_file: ./candidates.md
+  - role: user
+    content_file: ./transcript-windows.md
+output:
+  format: json
+  validation_mode: json_schema
+  schema_path: semantic_reconciliation_llm.v1.json
+  repair_attempts: 0

assets/generic/normalize/deduplication/prompts/protocol.md

@@ -0,0 +1,7 @@
+Use only the positive integer `candidate_id` values supplied in the candidate material.
+
+Return a duplicate group only when the evidence supports that every selected candidate describes the same underlying entity. Each group must contain at least two distinct candidate IDs, and its `canonical_candidate_id` must be one of those IDs. A candidate may appear in at most one group.
+
+Omit uncertain matches and candidates that should remain distinct. Do not invent candidates or infer an ID from list position. An empty `duplicate_groups` array is valid.
+
+The response must conform exactly to the selected JSON schema. Return IDs only: do not copy candidate names, evidence, transcript text, source identifiers, or source ranges into the response.

assets/generic/normalize/deduplication/prompts/system.md

@@ -0,0 +1,2 @@
+You reconcile structured records that may describe the same underlying entity.
+Follow the supplied protocol and return only the requested structured result.

assets/generic/normalize/deduplication/prompts/transcript-windows.md

@@ -0,0 +1,3 @@
+Transcript evidence windows:
+
+{{ input "transcript" }}

assets/generic/normalize/deduplication/schemas/semantic_reconciliation_llm.v1.json

@@ -0,0 +1,33 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "notarius.generic.semantic_reconciliation.llm",
+  "title": "notarius_semantic_reconciliation_llm_v1",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["duplicate_groups"],
+  "properties": {
+    "duplicate_groups": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["candidate_ids", "canonical_candidate_id"],
+        "properties": {
+          "candidate_ids": {
+            "type": "array",
+            "minItems": 2,
+            "uniqueItems": true,
+            "items": {
+              "type": "integer",
+              "minimum": 1
+            }
+          },
+          "canonical_candidate_id": {
+            "type": "integer",
+            "minimum": 1
+          }
+        }
+      }
+    }
+  }
+}

docs/adr/0013-use-request-local-candidate-handles-for-semantic-reconciliation.md

@@ -0,0 +1,91 @@
+# ADR-0013: Use request-local candidate handles for semantic reconciliation
+
+**Status:** Accepted
+**Date:** 2026-08-09
+
+## Context
+
+Several typed normalize stage modules need semantic reconciliation after
+deterministic preprocessing: a model can judge whether source-backed candidates
+refer to the same underlying entity, while application code remains responsible
+for constructing the normalized artifact. Requiring the model to reproduce a
+candidate's full contextual selector makes the response larger and introduces
+avoidable formatting, ordering, and transcription failure modes.
+
+Reconciliation must preserve the exact typed artifact boundary established by
+[ADR-0003](0003-typed-interfaces-with-two-zone-data-model.md), the domain-neutral
+framework and concrete-domain dependency direction established by
+[ADR-0004](0004-package-modules-by-domain.md), and the distinction in
+[ADR-0009](0009-minimal-evidence-grounded-extraction-artifacts.md) between source
+evidence and auxiliary identity context. It also needs a concrete, narrowly
+scoped application of the request-local-label exception allowed by
+[ADR-0012](0012-resolve-opaque-entity-identifiers-deterministically.md).
+
+## Decision
+
+Semantic reconciliation will be a domain-neutral framework mechanism used by
+typed normalize stage modules. A consuming artifact family will retain
+ownership of its typed records, identity rules, consolidation policy, durable
+IDs, and domain warnings; the framework mechanism will not infer those rules
+from arbitrary data.
+
+For each reconciliation request, deterministic code will assign every eligible
+model-visible candidate a contiguous, one-based integer handle. The model may
+receive the candidate's contextual label, source references, and bounded source
+context needed to judge identity, but its structured response will identify
+candidates only by those supplied handles. A handle is local to one request,
+does not represent entity identity, and must never enter a durable artifact or
+be used to derive a durable ID.
+
+The model will propose duplicate groups and select one supplied member of each
+group as canonical. Deterministic code will resolve the handles through the
+retained request mapping, validate the complete proposal, discard unsafe
+groups, and apply only validated groups through typed domain-owned policy. The
+model will not synthesize replacement records or directly mutate an artifact.
+
+Every reconciliation prompt will combine a mandatory framework-owned protocol
+and safety policy with an explicitly selected semantic policy. The semantic
+policy may be the conservative generic policy or a domain-owned policy, but it
+cannot replace the shared response protocol or deterministic safety boundary.
+
+## Alternatives considered
+
+- Return durable application IDs. Opaque IDs do not help semantic judgment,
+  expose application identity mechanics, and make model output reproduce data
+  that deterministic code already owns.
+- Return names alone or copied contextual selectors. Names can be ambiguous,
+  while reproducing labels and source ranges adds response complexity and
+  creates mismatches without adding semantic information. Request-local
+  handles preserve exact selection without either failure mode.
+- Ask the model to return synthesized canonical replacement records. This
+  would transfer typed artifact construction, provenance consolidation, and
+  durable identity policy to a probabilistic boundary.
+- Reconcile reflection-discovered fields or arbitrary JSON. This would weaken
+  the typed artifact contract and move domain semantics into generic code.
+- Hide reconciliation inside extraction or another stage. This would obscure
+  stage ownership and create cross-stage behavior outside the fixed pipeline;
+  reconciliation remains explicit normalize-stage behavior.
+- Let each domain replace the complete prompt protocol. This would duplicate
+  safety mechanics and allow domain policy to bypass the common response and
+  validation contract.
+
+## Consequences
+
+Model responses become smaller and easier to validate, while deterministic
+application code retains authority over identity, provenance, ordering, and
+typed artifact construction. The framework requires a request-local mapping,
+bounded context preparation, a private integer response contract, proposal
+assessment, and shared prompt assets. Each consuming artifact family still
+requires a typed adapter for its irreducibly domain-specific rules.
+
+Request-local handles are deliberately unsuitable for persistence, logging as
+entity identity, checkpoint contracts, or cross-request correlation. Changes
+to shared protocol and policy assets must participate in the normal prompt,
+schema, and checkpoint fingerprint mechanisms.
+
+Acceptance of this decision does not imply that the shared mechanism or its
+consumer migrations are implemented. The
+[feature roadmap](../roadmap/semantic-reconciliation.md) owns target behavior
+and status, and the
+[implementation plan](../roadmap/implementation.md) owns delivery sequence
+until the work is complete.

docs/internal/dnd.md

@@ -84,14 +84,15 @@ replace it with a complete profile of the same ID from the configured PromptKit
 source. Deployment profile selection is documented in
 [Configuration](../config.md#promptkit-profiles).
 
-The transcript assets have distinct consumers. Scene chunking consumes the
-complete-session `common-dnd-transcript-full.md`; extraction prompts consume
-the current-chunk `common-dnd-transcript-chunk.md`; and NPC, location, and item
-normalization consume `common-dnd-transcript-windows.md` alongside their
-candidate collections. Player, party, glossary, and compatible campaign
-references provide disambiguating context only when declared by the active
-prompt; they never establish evidence. Reference material is canonically
-ordered before rendering so equivalent inputs remain stable.
+The D&D transcript assets have distinct consumers. Scene chunking consumes the
+complete-session `common-dnd-transcript-full.md`, while extraction prompts
+consume the current-chunk `common-dnd-transcript-chunk.md`. NPC, location, and
+item normalization instead mount the generic semantic-reconciliation
+candidate and transcript-window presentation assets. Player, party, glossary,
+and compatible campaign references provide disambiguating context only when
+declared by the active prompt; they never establish evidence. Reference
+material is canonically ordered before rendering so equivalent inputs remain
+stable.
 
 Extraction prompts render the common system and identity messages first, then
 cached campaign references and the cached chunk transcript. Evidence policy and
@@ -101,10 +102,11 @@ reusable extraction prefix identical while preserving the lane-specific suffix.
 
 Scene chunking intentionally uses a different order: system, cached campaign
 references, uncached module instructions, then the final ephemeral full
-transcript. Entity normalization also has its own order: system, uncached
-module instructions, ephemeral reconciliation policy, uncached candidates, and
-final ephemeral transcript windows. These orders and cache controls are prompt
-behavior; change them only through the owning manifest and prompt declaration.
+transcript. Entity normalization also has its own order: D&D system, mandatory
+generic protocol, ephemeral domain semantic instructions, generic candidate
+presentation, and final ephemeral generic transcript windows. These orders and
+cache controls are prompt behavior; change them only through the owning
+manifest and prompt declaration.
 
 ## Evidence, Candidates, And Normalization
 
@@ -134,12 +136,46 @@ canonicalize display values and evidence, use source-document order for stable
 output, and issue bounded warnings for changes or collapsed duplicates. NPC,
 item, and location registry normalizers are intentional exceptions: each first
 produces a deterministic candidate set, then may use a bounded structured-LLM
-proposal to reconcile identity groups. The proposal selects supplied
-descriptors—names with their candidate source references—not durable IDs.
-Request-local candidate keys may support resolution internally, but are never
-included in model input or output. Colliding descriptors are ineligible, and
-invalid or unusable proposals retain the deterministic result with retry or
-fallback diagnostics; the model does not directly replace durable records.
+proposal to reconcile identity groups.
+
+## Semantic Registry Reconciliation
+
+The three registry normalizers instantiate the domain-neutral
+`internal/framework/semanticreconcile` engine with default bounds. Each
+eligible candidate receives a contiguous, one-based `candidate_id` for that
+request. The model sees that handle, the candidate label and source-free
+evidence ranges, plus bounded transcript windows; it returns only duplicate
+groups of supplied handles and one supplied canonical handle per group. It
+never returns names, evidence, durable IDs, or replacement records. Identical
+labels and evidence remain independently selectable because their handles are
+distinct.
+
+The generic core owns the mandatory handle protocol, candidate and transcript
+presentation, the private response schema, source-reference validation,
+candidate and combined-material limits, structured completion, proposal
+assessment, stable group ordering, and typed plan-application mechanics. The
+D&D prompt contributes its system message and registry-specific semantic
+instructions. The generic registrar registers the shared prompt and schema;
+the D&D registrar registers each consuming prompt and the fallback profile.
+
+Fewer than two eligible candidates skips the LLM without a semantic warning.
+An exceeded bound also skips the call and preserves the deterministic
+preprocessed registry, adding the registry's bounded fallback warning. Invalid
+structured output or discarded proposal groups use the normalizer's existing
+retry contract; retry exhaustion preserves the safe deterministic or
+partially applied result and emits its bounded fallback warning. Provider,
+transport, cancellation, and context-material failures remain execution
+errors.
+
+Application remains typed and registry-owned. All three policies select the
+canonical member's normalized display name, union member evidence in source
+order, preserve ungrouped records, and derive durable identity only after
+consolidation. NPC IDs derive from the final name. Item IDs also derive from
+the final name, and a typed guard prevents currency aliases from crossing
+denominations or mixing currency with non-currency records. Location IDs
+derive from the final name and final evidence, preserving same-name,
+parent/child, and distinct physical-place identities. Registry warning scopes,
+reason codes, and postconditions remain outside the generic core.
 
 ## Generated References And Grounding
 

docs/internal/llm.md

@@ -142,12 +142,28 @@ arrangement and its data-only boundary are defined by
 [ADR-0011](../adr/0011-centralize-llm-assets.md), rather than by this runtime
 guide.
 
+The generic registrar is the sole production registration owner for the
+semantic-reconciliation default prompt and private response schema. The
+domain-neutral reconciliation package also exposes only its mandatory protocol
+and candidate/transcript presentation files for domain prompt manifests. D&D
+registry normalizers mount those files while retaining ownership and hashing
+of their D&D system message, semantic instructions, and complete prompt
+declaration. The response schema is therefore registered once even though
+several typed normalizers select it.
+
 Mounted prompt assets determine a module's fingerprint. The fingerprint hashes
 only the module and shared files explicitly selected by its manifest, so an
 unrelated asset does not invalidate a checkpoint. Schema loaders validate JSON,
 attach identity and digest metadata, make defensive copies, and expose
 diagnostics without raw schema bytes.
 
+Semantic-reconciliation normalizers extend this identity with the shared
+response-schema digest, framework policy version, and complete limit-policy
+digest. Their manifest metadata records the same content-free prompt, schema,
+policy, and limit identities together with domain identity and normalization
+policies. Request-local handles, source material, proposal content, and raw
+asset bytes are not checkpoint metadata.
+
 Private response schemas validate a model transport envelope. They are not the
 durable artifact schema and should not be documented as an external wire
 contract. Durable formats and compatibility rules remain in the

docs/internal/modules.md

@@ -44,12 +44,20 @@ capability during preparation and the output boundary owns publication. See
 the [Published Evidence Context contract](../integrations/evidence-context.md)
 for the durable result.
 
+An artifact family is broader than a module: it owns the cohesive domain
+feature across its artifact type, codec, stage modules, validators, prompt
+policy, schemas, identity helpers, and reference projections. An extractor and
+normalizer in one artifact family remain independently registered modules in
+their respective pipeline stages. This ownership vocabulary does not create a
+new registry or change the fixed pipeline.
+
 ## Production Composition
 
 Production composition is intentionally split by family:
 
 - The generic registrar provides the unit chunker, generic JSON validators,
-  and JSON output encoder.
+  JSON output encoder, and shared semantic-reconciliation prompt and response
+  schema assets.
 - The Seriatim registrar provides the transcript input adapter. Its external
   input behavior is defined by the [Seriatim contract](../integrations/seriatim.md).
 - The D&D registrar provides its codecs, extractors, mergers, normalizers,
@@ -60,6 +68,36 @@ The CLI owns the composition that invokes these registrars. A module package
 may register its own family but must not assemble the CLI or make framework
 packages depend on production extensions.
 
+## Semantic Reconciliation
+
+`internal/framework/semanticreconcile` is a domain-neutral strategy used by a
+typed normalize module; it is not itself a selectable stage module. A
+source-backed artifact-family normalizer projects its deterministic records
+into contextual candidates and owned typed record envelopes, supplies its
+chosen prompt identity and resolved LLM profile, and constructs an engine with
+explicit limits. The core filters invalid evidence, assigns contiguous
+request-local integer handles, renders bounded candidate and transcript
+materials, invokes the structured-completion boundary, and assesses the
+returned duplicate groups into a stable non-overlapping plan.
+
+The normalizer then applies that plan through a typed `ApplicationPolicy`. The
+core preserves ungrouped records, contribution order, and provenance while the
+artifact family owns group guards, field and evidence consolidation, durable
+ID derivation, retry and fallback presentation, warnings, and postconditions.
+Request-local handles do not enter the typed value or durable artifact. Fewer
+than two eligible candidates skips model invocation; exceeding a candidate or
+combined-material bound preserves the deterministic result under the family's
+fallback policy. Provider, transport, cancellation, and context-construction
+failures remain execution errors.
+
+The core supplies a conservative generic prompt and the single private
+response schema. A domain prompt may substitute its semantic instructions but
+mounts the core-owned protocol and candidate/transcript presentation assets.
+Prompt, schema, policy, and limit identities participate in manifest metadata
+and checkpoint fingerprints. The generic registrar owns production
+registration of those shared assets; a consuming domain registrar owns only
+its domain prompt.
+
 ## Adding Or Changing A Module
 
 1. Choose the pipeline stage and the typed artifact boundary. Put external

docs/internal/overview.md

@@ -29,6 +29,7 @@ physical state roots.
 | Generic models | **internal/core/source**, **internal/core/artifacts**, **internal/framework/contracts** | Source documents and chunks, manifests and provenance, plus typed artifact, reference, validation, output, and structured-completion contracts. |
 | Pipeline framework | **internal/framework/pipeline** | Registries, profile and reference resolution, typed preparation, validation, retry coordination, ordered execution, handoff, and result assembly. |
 | LLM and prompt runtime | **internal/framework/llm**, **internal/framework/promptfs** | Provider-neutral structured completions, scheduling, profile recording, prompt assets, schema registration, and credential-shaped-value redaction. |
+| Semantic reconciliation | **internal/framework/semanticreconcile** | Bounded source-backed candidate preparation, request-local handle proposals, deterministic assessment, typed plan application, and reconciliation identity metadata; see [Module Internals](modules.md#semantic-reconciliation) and [D&D Module Internals](dnd.md#semantic-registry-reconciliation). |
 | Embedded LLM content | **assets** | Read-only centralized LLM-facing content, scoped by its consuming package; see [LLM Runtime](llm.md#prompt-and-schema-assets) and [D&D Module Internals](dnd.md#prompt-construction). |
 | Runtime state | **internal/core/fileio**, **internal/core/debugbundle**, **internal/framework/checkpoint**, **internal/framework/chunkplan**, **internal/framework/chunkmap**, **internal/framework/debug** | Confined atomic files, debug bundles, checkpoint and chunk-plan state, accepted chunk maps, and pipeline-facing debug recording. |
 | Production extensions | **internal/modules/generic**, **internal/modules/seriatim**, **internal/modules/dnd** | Domain-neutral extensions, Seriatim input support, and D&D extraction families registered into the production catalog. |
@@ -49,8 +50,9 @@ the CLI composition boundary.
   composition, and path safety.
 - [LLM Runtime](llm.md): structured completion, scheduling, prompt assets,
   profiles, and secret handling.
-- [Module Internals](modules.md): generic extension registration, module
-  construction, validation, and reference mechanics.
+- [Module Internals](modules.md): generic extension registration, artifact
+  families, module construction, semantic reconciliation, validation, and
+  reference mechanics.
 - [D&D Module Internals](dnd.md): shared D&D extractor conventions, generated
   reference projections, and lane-specific exceptions. Durable D&D and
   Seriatim data shapes remain in the [integration contracts](../integrations/).

docs/policy/architecture.md

@@ -24,6 +24,12 @@ DAGs or a general workflow language. Every stage remains explicit; general
 chunking, merging, or normalization behavior must not be hidden inside an
 extractor.
 
+A stage module is one configured implementation of one pipeline stage. An
+artifact family is the cohesive domain feature that owns an artifact across
+the explicit stages and supporting codecs, validators, prompts, identity
+rules, and reference projections. Artifact-family ownership does not combine
+stages or alter the fixed pipeline.
+
 Input and chunking are pipeline-wide. Each selected artifact lane owns its
 extract, merge, and normalize stages, and the output stage aggregates the run's
 lane outcomes.
@@ -39,6 +45,12 @@ implementations. Domain-neutral model and framework layers provide reusable
 policy, contracts, and orchestration. Concrete input, pipeline, output, and
 validation extensions depend inward on those generic layers.
 
+Semantic reconciliation is one such domain-neutral framework mechanism. It
+prepares bounded source context, invokes a shared model-judgment protocol,
+validates proposals, and applies safe plans through typed policies supplied by
+the consuming artifact family. It does not own domain identity, durable IDs,
+warning semantics, or artifact construction rules.
+
 Generic layers must not depend on production extensions. Concrete extensions
 must not compose the application or take ownership of process behavior. The
 current packages implementing these layers are inventoried in
@@ -186,8 +198,13 @@ or domain-specific prompt logic.
 When a model selects an application entity, callers must supply a contextual
 selection and deterministically attach the opaque application identity whenever
 the selection resolves exactly. Models do not receive or reproduce opaque
-application identifiers; [ADR-0012](../adr/0012-resolve-opaque-entity-identifiers-deterministically.md)
-records the rationale and limited request-local-label exception.
+application identifiers. Semantic reconciliation may instead expose
+contiguous, one-based candidate handles that exist only for one request;
+deterministic code resolves them before typed application, and they never
+become durable identity. This is the approved request-local-label application
+of [ADR-0012](../adr/0012-resolve-opaque-entity-identifiers-deterministically.md)
+recorded by
+[ADR-0013](../adr/0013-use-request-local-candidate-handles-for-semantic-reconciliation.md).
 
 LLM calls and other external operations accept cancellation and respect
 timeouts. Concurrency control belongs in shared runtime plumbing rather than in

docs/roadmap/future.md

@@ -24,28 +24,52 @@ not as committed release dates.
 
 ## Shared Normalization And Quality Work
 
-### Generic LLM-Assisted Deduplication
+The implemented source-backed core and initial D&D registry adoption are
+described by [Module Internals](../internal/modules.md#semantic-reconciliation)
+and
+[D&D Module Internals](../internal/dnd.md#semantic-registry-reconciliation).
+The [Semantic Reconciliation Roadmap](semantic-reconciliation.md) retains the
+original feature scope; the sections below keep broader extensions deferred.
 
-- Add a reusable normalizer that asks an LLM to identify duplicate sets in a
-  list and propose one replacement element for each set.
-- Define the minimum domain-neutral input contract, initially an ordered list
-  whose elements retain stable unique IDs as internal deterministic state.
-  Model proposals use contextual descriptors, or a specifically justified
-  request-local short label, rather than durable IDs. Artifact-kind
-  registrations or adapters may expose that structure without moving domain
-  rules into the generic package.
-- Keep mutation deterministic: parse and validate the model's duplicate groups,
-  resolve every supplied descriptor or local label exactly, reject overlapping
-  or malformed groups, prevent unrelated insertion or deletion, and apply only
-  approved replacement operations in code.
-- Preserve provenance needed for audit and downstream validation, and emit
-  warnings describing every collapsed group.
-- Evaluate batching and context-window limits before applying the normalizer to
-  large artifact collections.
+### Large-Collection Semantic Reconciliation
 
-The model may use its own domain knowledge to judge semantic duplication; the
-generic implementation is responsible only for the common proposal contract,
-safety checks, and deterministic application of accepted changes.
+- Evaluate deterministic candidate blocking only after representative registry
+  inputs exceed the active roadmap's bounded single-request limits. Blocking
+  should use cheap, explainable signals to form plausible comparison sets while
+  preserving the possibility that a duplicate appears outside a lexical name
+  match.
+- Define correctness for candidates that appear in more than one block,
+  conflicting canonical selections, transitive identity across blocks, retry
+  isolation, and deterministic final ordering before implementation.
+- Prefer a reconciliation graph or union plan with explicit conflict checks
+  over arbitrary fixed-size slices. Never silently treat a batch boundary as
+  evidence that two candidates are distinct.
+- Record per-request bounds, block provenance, model calls, discarded
+  proposals, and final group derivation well enough to audit a collapse.
+
+### Operator-Selected Semantic Policies
+
+- Consider allowing an operator to select an approved semantic-policy prompt
+  for a typed reconciliation module without replacing the shared protocol,
+  response schema, or deterministic safety rules.
+- Define the trusted asset source, configuration syntax, compatibility checks,
+  startup validation, provenance, prompt fingerprinting, checkpoint effects,
+  and support boundary before exposing the option.
+- Prefer selection among registered, typed-policy-compatible prompt assets over
+  arbitrary filesystem prompt paths. Do not add this flexibility until an
+  operator workflow requires it; artifact-family-owned policy remains simpler
+  and safer for the initial implementation.
+
+### Broader Reconciliation Inputs And Module Selection
+
+- Revisit alternate context providers when a concrete non-source-backed entity
+  collection needs semantic reconciliation. Any extension must preserve the
+  same request-local identity, deterministic proposal validation, provenance,
+  and typed application guarantees.
+- Consider a selectable generic normalizer only if Notarius gains a real
+  domain-neutral typed artifact contract that can safely support it. Do not
+  weaken exact artifact registration or introduce reflection-based arbitrary
+  JSON mutation merely to expose a universal module key.
 
 ### Validation And Review
 
@@ -102,6 +126,18 @@ checkpoint reuse, when an older artifact may be decoded or adapted, and when a
 producer or all dependents must be recomputed. Do not add a general migration
 framework until an actual contract change requires one.
 
+### Artifact-family-oriented physical packaging
+
+[ADR-0004](../adr/0004-package-modules-by-domain.md) currently groups production
+extensions by domain and then by pipeline stage. After artifact-family
+ownership terminology is established and more families span extraction,
+normalization, validation, codecs, references, and assets, reassess whether a
+feature-first physical layout would improve navigation and reduce scattered
+changes enough to justify a repository-wide package migration. Any change must
+address Go dependency cycles, registrar ownership, stable public module keys,
+and supersession of the affected ADR-0004 decision. Conceptual artifact-family
+ownership does not by itself require this move.
+
 ## Blue-Sky Platform And Operations
 
 These ideas are intentionally less specified. Promote one into an earlier

internal/cli/production_contract_test.go

@@ -25,6 +25,7 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/chunk/scenes"
 	combatcodec "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/codec/combatturns"
@@ -311,6 +312,47 @@ func TestProductionPromptAssetsPrepareWithoutProviderCredentials(t *testing.T) {
 	if _, err := pipeline.Prepare(effective.ResolvedPipeline, components.registries, pipeline.ModuleDependencies{LLM: &productionFakeLLMClient{}}); err != nil {
 		t.Fatalf("prepare production scene and spell modules: %v", err)
 	}
+
+	schemaFS, err := components.assets.SchemaFS()
+	if err != nil {
+		t.Fatalf("production schema assets: %v", err)
+	}
+	if _, err := fs.ReadFile(schemaFS, filepath.Base(semanticreconcile.SchemaAssetPath)); err != nil {
+		t.Fatalf("generic reconciliation schema asset: %v", err)
+	}
+	options, err := components.assets.PromptKitOptions()
+	if err != nil {
+		t.Fatalf("production PromptKit options: %v", err)
+	}
+	options = append(options, promptkit.WithProfiles(promptkit.OpenAICompatibleProfile(promptkit.OpenAICompatibleProfileConfig{
+		ID: "assembled-prompt-test", Endpoint: "http://127.0.0.1:1/v1", Model: "test",
+	})))
+	engine, err := promptkit.NewEngine(promptkit.Config{}, options...)
+	if err != nil {
+		t.Fatalf("production prompt engine: %v", err)
+	}
+	inputs := map[string]promptkit.ArtifactRef{
+		"candidates": promptkit.Inline(`{"candidates":[{"candidate_id":1,"label":"Alias","source_refs":[{"start_unit_id":1,"end_unit_id":1}]}]}`),
+		"transcript": promptkit.Inline(`{"windows":[{"units":[]}]}`),
+	}
+	for _, prompt := range []struct {
+		id      string
+		version string
+	}{
+		{id: npcnormalize.PromptID, version: npcnormalize.PromptVersion},
+		{id: itemregistrynormalize.PromptID, version: itemregistrynormalize.PromptVersion},
+		{id: locationnormalize.PromptID, version: locationnormalize.PromptVersion},
+	} {
+		prepared, err := engine.Prepare(context.Background(), promptkit.RunRequest{
+			PromptID: prompt.id, PromptVersion: prompt.version, ProfileID: "assembled-prompt-test", Inputs: inputs,
+		})
+		if err != nil {
+			t.Fatalf("prepare production prompt %q: %v", prompt.id, err)
+		}
+		if prepared.OutputContract.SchemaPath != filepath.Base(semanticreconcile.SchemaAssetPath) {
+			t.Fatalf("prompt %q schema = %q, want generic reconciliation schema", prompt.id, prepared.OutputContract.SchemaPath)
+		}
+	}
 }
 
 func TestProductionSpellValidatorsPrepareFromMaterializedCatalog(t *testing.T) {

internal/framework/semanticreconcile/application.go

@@ -0,0 +1,394 @@
+package semanticreconcile
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+)
+
+// CloneValueFunc returns a value that shares no caller-owned mutable state with
+// its input.
+type CloneValueFunc[T any] func(T) T
+
+// Record owns one typed value and its deterministic input provenance.
+type Record[T any] struct {
+	value                 T
+	originalInputIndexes  []int
+	earliestInputPosition int
+	cloneValue            CloneValueFunc[T]
+}
+
+// NewRecord constructs an owned typed record. Original input indexes are
+// normalized into ascending unique order.
+func NewRecord[T any](value T, originalInputIndexes []int, earliestInputPosition int, cloneValue CloneValueFunc[T]) (Record[T], error) {
+	if cloneValue == nil {
+		return Record[T]{}, fmt.Errorf("construct semantic reconciliation record: clone value function must not be nil")
+	}
+	if earliestInputPosition < 0 {
+		return Record[T]{}, fmt.Errorf("construct semantic reconciliation record: earliest input position must not be negative")
+	}
+	indexes, err := normalizeInputIndexes(originalInputIndexes)
+	if err != nil {
+		return Record[T]{}, fmt.Errorf("construct semantic reconciliation record: %w", err)
+	}
+	return Record[T]{
+		value:                 cloneValue(value),
+		originalInputIndexes:  indexes,
+		earliestInputPosition: earliestInputPosition,
+		cloneValue:            cloneValue,
+	}, nil
+}
+
+// Value returns an independently owned typed value.
+func (record Record[T]) Value() T {
+	if record.cloneValue == nil {
+		var zero T
+		return zero
+	}
+	return record.cloneValue(record.value)
+}
+
+// OriginalInputIndexes returns an owned ascending unique index list.
+func (record Record[T]) OriginalInputIndexes() []int {
+	return cloneSlice(record.originalInputIndexes)
+}
+
+// EarliestInputPosition returns the earliest deterministic input position
+// contributing to this record.
+func (record Record[T]) EarliestInputPosition() int { return record.earliestInputPosition }
+
+// RejectionCategory is a stable, domain-neutral reason that an otherwise safe
+// semantic group was not applied.
+type RejectionCategory string
+
+// ApplicationPolicy supplies only the typed behavior needed to apply a safe
+// reconciliation plan. An empty category from RejectGroup accepts the group.
+type ApplicationPolicy[T any] struct {
+	CloneValue       CloneValueFunc[T]
+	RejectGroup      func(members []T, canonical T) RejectionCategory
+	ConsolidateGroup func(members []T, canonical T) (T, error)
+}
+
+// GroupProvenance identifies the complete input contribution of one plan
+// group without prescribing domain warning or retry policy.
+type GroupProvenance struct {
+	memberPositions      []int
+	canonicalPosition    int
+	originalInputIndexes []int
+	earliestPosition     int
+}
+
+// MemberPositions returns owned record positions in ascending order.
+func (provenance GroupProvenance) MemberPositions() []int {
+	return cloneSlice(provenance.memberPositions)
+}
+
+// CanonicalPosition returns the plan-selected canonical record position.
+func (provenance GroupProvenance) CanonicalPosition() int {
+	return provenance.canonicalPosition
+}
+
+// OriginalInputIndexes returns the sorted union contributed by all members.
+func (provenance GroupProvenance) OriginalInputIndexes() []int {
+	return cloneSlice(provenance.originalInputIndexes)
+}
+
+// EarliestInputPosition returns the earliest member input position.
+func (provenance GroupProvenance) EarliestInputPosition() int {
+	return provenance.earliestPosition
+}
+
+// AppliedGroup records the provenance of one successfully consolidated group.
+type AppliedGroup struct {
+	provenance GroupProvenance
+}
+
+// Provenance returns an independently owned provenance snapshot.
+func (event AppliedGroup) Provenance() GroupProvenance {
+	return cloneGroupProvenance(event.provenance)
+}
+
+// RejectedGroup records a typed guard decision while leaving warning and retry
+// construction to the consuming domain.
+type RejectedGroup struct {
+	category   RejectionCategory
+	provenance GroupProvenance
+}
+
+// Category returns the stable neutral rejection category.
+func (event RejectedGroup) Category() RejectionCategory { return event.category }
+
+// Provenance returns an independently owned provenance snapshot.
+func (event RejectedGroup) Provenance() GroupProvenance {
+	return cloneGroupProvenance(event.provenance)
+}
+
+// ApplicationResult owns the ordered records and neutral events from one plan
+// application.
+type ApplicationResult[T any] struct {
+	records        []Record[T]
+	appliedGroups  []AppliedGroup
+	rejectedGroups []RejectedGroup
+}
+
+// Records returns independently owned records in earliest-contribution order.
+func (result ApplicationResult[T]) Records() []Record[T] {
+	return cloneRecords(result.records)
+}
+
+// AppliedGroups returns independently owned applied-group events.
+func (result ApplicationResult[T]) AppliedGroups() []AppliedGroup {
+	events := make([]AppliedGroup, len(result.appliedGroups))
+	for index, event := range result.appliedGroups {
+		events[index] = AppliedGroup{provenance: cloneGroupProvenance(event.provenance)}
+	}
+	return preserveEmptySlice(result.appliedGroups, events)
+}
+
+// RejectedGroups returns independently owned rejected-group events.
+func (result ApplicationResult[T]) RejectedGroups() []RejectedGroup {
+	events := make([]RejectedGroup, len(result.rejectedGroups))
+	for index, event := range result.rejectedGroups {
+		events[index] = RejectedGroup{category: event.category, provenance: cloneGroupProvenance(event.provenance)}
+	}
+	return preserveEmptySlice(result.rejectedGroups, events)
+}
+
+type applicationEntry[T any] struct {
+	record Record[T]
+	order  int
+}
+
+// ApplyPlan applies safe, non-overlapping groups without mutating the plan,
+// records, or values supplied to policy callbacks.
+func ApplyPlan[T any](plan Plan, records []Record[T], policy ApplicationPolicy[T]) (ApplicationResult[T], error) {
+	if err := validateApplicationPolicy(policy); err != nil {
+		return ApplicationResult[T]{}, err
+	}
+	for index, record := range records {
+		if err := validateRecord(record); err != nil {
+			return ApplicationResult[T]{}, fmt.Errorf("apply semantic reconciliation plan: record %d: %w", index, err)
+		}
+	}
+
+	groups := plan.Groups()
+	groupByFirstMember, err := validateApplicationPlan(groups, len(records))
+	if err != nil {
+		return ApplicationResult[T]{}, err
+	}
+	groupedPositions := make(map[int]struct{}, len(records))
+	for _, group := range groups {
+		for _, position := range group.memberPositions {
+			groupedPositions[position] = struct{}{}
+		}
+	}
+
+	entries := make([]applicationEntry[T], 0, len(records))
+	result := ApplicationResult[T]{}
+	for position, record := range records {
+		group, firstMember := groupByFirstMember[position]
+		if !firstMember {
+			if _, grouped := groupedPositions[position]; grouped {
+				continue
+			}
+			entries = append(entries, applicationEntry[T]{record: cloneRecordWith(record, policy.CloneValue), order: position})
+			continue
+		}
+
+		provenance := groupProvenance(group, records)
+		guardMembers, guardCanonical := policyInputs(group, records, policy.CloneValue)
+		category := RejectionCategory("")
+		if policy.RejectGroup != nil {
+			category = policy.RejectGroup(guardMembers, guardCanonical)
+		}
+		if category != "" && strings.TrimSpace(string(category)) == "" {
+			return ApplicationResult[T]{}, fmt.Errorf("apply semantic reconciliation group beginning at position %d: rejection category must not be blank", position)
+		}
+		if category != "" {
+			for _, memberPosition := range group.memberPositions {
+				entries = append(entries, applicationEntry[T]{record: cloneRecordWith(records[memberPosition], policy.CloneValue), order: memberPosition})
+			}
+			result.rejectedGroups = append(result.rejectedGroups, RejectedGroup{category: category, provenance: provenance})
+			continue
+		}
+
+		members, canonical := policyInputs(group, records, policy.CloneValue)
+		consolidated, err := policy.ConsolidateGroup(members, canonical)
+		if err != nil {
+			return ApplicationResult[T]{}, fmt.Errorf("apply semantic reconciliation group beginning at position %d: consolidate: %w", position, err)
+		}
+		owned, err := NewRecord(consolidated, provenance.originalInputIndexes, provenance.earliestPosition, policy.CloneValue)
+		if err != nil {
+			return ApplicationResult[T]{}, fmt.Errorf("apply semantic reconciliation group beginning at position %d: own consolidated record: %w", position, err)
+		}
+		entries = append(entries, applicationEntry[T]{record: owned, order: position})
+		result.appliedGroups = append(result.appliedGroups, AppliedGroup{provenance: provenance})
+	}
+
+	sort.SliceStable(entries, func(left, right int) bool {
+		if entries[left].record.earliestInputPosition == entries[right].record.earliestInputPosition {
+			return entries[left].order < entries[right].order
+		}
+		return entries[left].record.earliestInputPosition < entries[right].record.earliestInputPosition
+	})
+	if records != nil {
+		result.records = make([]Record[T], len(entries))
+		for index, entry := range entries {
+			result.records[index] = cloneRecord(entry.record)
+		}
+	}
+	return result, nil
+}
+
+func validateApplicationPolicy[T any](policy ApplicationPolicy[T]) error {
+	if policy.CloneValue == nil {
+		return fmt.Errorf("apply semantic reconciliation plan: clone value function must not be nil")
+	}
+	if policy.ConsolidateGroup == nil {
+		return fmt.Errorf("apply semantic reconciliation plan: consolidate group function must not be nil")
+	}
+	return nil
+}
+
+func validateRecord[T any](record Record[T]) error {
+	if record.cloneValue == nil {
+		return fmt.Errorf("invalid construction state: clone value function must not be nil")
+	}
+	if record.earliestInputPosition < 0 {
+		return fmt.Errorf("invalid construction state: earliest input position must not be negative")
+	}
+	for index, value := range record.originalInputIndexes {
+		if value < 0 {
+			return fmt.Errorf("invalid construction state: original input index must not be negative")
+		}
+		if index > 0 && record.originalInputIndexes[index-1] >= value {
+			return fmt.Errorf("invalid construction state: original input indexes must be ascending and unique")
+		}
+	}
+	return nil
+}
+
+func validateApplicationPlan(groups []PlanGroup, recordCount int) (map[int]PlanGroup, error) {
+	groupByFirstMember := make(map[int]PlanGroup, len(groups))
+	used := make(map[int]struct{})
+	for groupIndex, group := range groups {
+		if len(group.memberPositions) < 2 {
+			return nil, fmt.Errorf("apply semantic reconciliation plan: group %d must contain at least two member positions", groupIndex)
+		}
+		canonicalMember := false
+		for memberIndex, position := range group.memberPositions {
+			if position < 0 || position >= recordCount {
+				return nil, fmt.Errorf("apply semantic reconciliation plan: group %d member position %d is outside record range [0,%d)", groupIndex, position, recordCount)
+			}
+			if memberIndex > 0 && group.memberPositions[memberIndex-1] >= position {
+				return nil, fmt.Errorf("apply semantic reconciliation plan: group %d member positions must be ascending and unique", groupIndex)
+			}
+			if _, exists := used[position]; exists {
+				return nil, fmt.Errorf("apply semantic reconciliation plan: record position %d belongs to multiple groups", position)
+			}
+			used[position] = struct{}{}
+			canonicalMember = canonicalMember || position == group.canonicalPosition
+		}
+		if group.canonicalPosition < 0 || group.canonicalPosition >= recordCount {
+			return nil, fmt.Errorf("apply semantic reconciliation plan: group %d canonical position %d is outside record range [0,%d)", groupIndex, group.canonicalPosition, recordCount)
+		}
+		if !canonicalMember {
+			return nil, fmt.Errorf("apply semantic reconciliation plan: group %d canonical position %d is not a member", groupIndex, group.canonicalPosition)
+		}
+		groupByFirstMember[group.memberPositions[0]] = group
+	}
+	return groupByFirstMember, nil
+}
+
+func groupProvenance[T any](group PlanGroup, records []Record[T]) GroupProvenance {
+	provenance := GroupProvenance{
+		memberPositions:   cloneSlice(group.memberPositions),
+		canonicalPosition: group.canonicalPosition,
+		earliestPosition:  records[group.memberPositions[0]].earliestInputPosition,
+	}
+	for _, position := range group.memberPositions {
+		provenance.originalInputIndexes = append(provenance.originalInputIndexes, records[position].originalInputIndexes...)
+		if records[position].earliestInputPosition < provenance.earliestPosition {
+			provenance.earliestPosition = records[position].earliestInputPosition
+		}
+	}
+	provenance.originalInputIndexes, _ = normalizeInputIndexes(provenance.originalInputIndexes)
+	return provenance
+}
+
+func policyInputs[T any](group PlanGroup, records []Record[T], cloneValue CloneValueFunc[T]) ([]T, T) {
+	members := make([]T, len(group.memberPositions))
+	for index, position := range group.memberPositions {
+		members[index] = cloneValue(records[position].value)
+	}
+	return members, cloneValue(records[group.canonicalPosition].value)
+}
+
+func normalizeInputIndexes(indexes []int) ([]int, error) {
+	if indexes == nil {
+		return nil, nil
+	}
+	normalized := append([]int{}, indexes...)
+	for _, index := range normalized {
+		if index < 0 {
+			return nil, fmt.Errorf("original input index must not be negative")
+		}
+	}
+	sort.Ints(normalized)
+	write := 0
+	for _, index := range normalized {
+		if write > 0 && normalized[write-1] == index {
+			continue
+		}
+		normalized[write] = index
+		write++
+	}
+	return normalized[:write], nil
+}
+
+func cloneRecord[T any](record Record[T]) Record[T] {
+	return cloneRecordWith(record, record.cloneValue)
+}
+
+func cloneRecordWith[T any](record Record[T], cloneValue CloneValueFunc[T]) Record[T] {
+	return Record[T]{
+		value:                 cloneValue(record.value),
+		originalInputIndexes:  cloneSlice(record.originalInputIndexes),
+		earliestInputPosition: record.earliestInputPosition,
+		cloneValue:            cloneValue,
+	}
+}
+
+func cloneRecords[T any](records []Record[T]) []Record[T] {
+	if records == nil {
+		return nil
+	}
+	cloned := make([]Record[T], len(records))
+	for index, record := range records {
+		cloned[index] = cloneRecord(record)
+	}
+	return cloned
+}
+
+func cloneGroupProvenance(provenance GroupProvenance) GroupProvenance {
+	return GroupProvenance{
+		memberPositions:      cloneSlice(provenance.memberPositions),
+		canonicalPosition:    provenance.canonicalPosition,
+		originalInputIndexes: cloneSlice(provenance.originalInputIndexes),
+		earliestPosition:     provenance.earliestPosition,
+	}
+}
+
+func cloneSlice[T any](values []T) []T {
+	if values == nil {
+		return nil
+	}
+	return append([]T{}, values...)
+}
+
+func preserveEmptySlice[S ~[]E, E any](source S, cloned []E) []E {
+	if source == nil {
+		return nil
+	}
+	return cloned
+}

internal/framework/semanticreconcile/application_test.go

@@ -0,0 +1,376 @@
+package semanticreconcile
+
+import (
+	"errors"
+	"reflect"
+	"strings"
+	"testing"
+)
+
+type syntheticRecord struct {
+	Name  string
+	Notes []string
+}
+
+func cloneSyntheticRecord(record syntheticRecord) syntheticRecord {
+	record.Notes = cloneSlice(record.Notes)
+	return record
+}
+
+func TestNewRecordOwnsValueAndNormalizesProvenance(t *testing.T) {
+	value := syntheticRecord{Name: "alpha", Notes: []string{"owned"}}
+	indexes := []int{3, 1, 3}
+	record, err := NewRecord(value, indexes, 4, cloneSyntheticRecord)
+	if err != nil {
+		t.Fatalf("NewRecord() error = %v", err)
+	}
+
+	value.Notes[0] = "caller mutation"
+	indexes[0] = 99
+	gotValue := record.Value()
+	gotIndexes := record.OriginalInputIndexes()
+	if gotValue.Name != "alpha" || !reflect.DeepEqual(gotValue.Notes, []string{"owned"}) {
+		t.Fatalf("Value() = %#v, want owned original", gotValue)
+	}
+	if !reflect.DeepEqual(gotIndexes, []int{1, 3}) {
+		t.Fatalf("OriginalInputIndexes() = %v, want [1 3]", gotIndexes)
+	}
+	if record.EarliestInputPosition() != 4 {
+		t.Fatalf("EarliestInputPosition() = %d, want 4", record.EarliestInputPosition())
+	}
+
+	gotValue.Notes[0] = "accessor mutation"
+	gotIndexes[0] = 88
+	if again := record.Value(); again.Notes[0] != "owned" {
+		t.Fatalf("Value() retained accessor mutation: %#v", again)
+	}
+	if again := record.OriginalInputIndexes(); !reflect.DeepEqual(again, []int{1, 3}) {
+		t.Fatalf("OriginalInputIndexes() retained accessor mutation: %v", again)
+	}
+}
+
+func TestNewRecordPreservesNilAndEmptyIndexOwnership(t *testing.T) {
+	nilIndexes, err := NewRecord(syntheticRecord{}, nil, 0, cloneSyntheticRecord)
+	if err != nil {
+		t.Fatalf("NewRecord(nil) error = %v", err)
+	}
+	emptyIndexes, err := NewRecord(syntheticRecord{}, []int{}, 0, cloneSyntheticRecord)
+	if err != nil {
+		t.Fatalf("NewRecord(empty) error = %v", err)
+	}
+	if nilIndexes.OriginalInputIndexes() != nil {
+		t.Fatal("nil original indexes became non-nil")
+	}
+	if got := emptyIndexes.OriginalInputIndexes(); got == nil || len(got) != 0 {
+		t.Fatalf("empty original indexes = %#v, want non-nil empty", got)
+	}
+
+	if _, err := NewRecord(syntheticRecord{}, nil, 0, CloneValueFunc[syntheticRecord](nil)); err == nil {
+		t.Fatal("NewRecord() accepted nil clone function")
+	}
+	if _, err := NewRecord(syntheticRecord{}, nil, -1, cloneSyntheticRecord); err == nil {
+		t.Fatal("NewRecord() accepted negative earliest position")
+	}
+	if _, err := NewRecord(syntheticRecord{}, []int{-1}, 0, cloneSyntheticRecord); err == nil {
+		t.Fatal("NewRecord() accepted negative original input index")
+	}
+}
+
+func TestApplyPlanConsolidatesGroupsAndOrdersByEarliestContribution(t *testing.T) {
+	records := syntheticRecords(t,
+		recordFixture{"alpha", []int{4}, 4},
+		recordFixture{"bravo", []int{3, 1}, 1},
+		recordFixture{"charlie", []int{2}, 2},
+		recordFixture{"delta", []int{2, 0}, 0},
+	)
+	plan := Plan{groups: []PlanGroup{
+		{memberPositions: []int{0, 2}, canonicalPosition: 2},
+		{memberPositions: []int{1, 3}, canonicalPosition: 1},
+	}}
+	var canonicalNames []string
+	result, err := ApplyPlan(plan, records, ApplicationPolicy[syntheticRecord]{
+		CloneValue: cloneSyntheticRecord,
+		ConsolidateGroup: func(members []syntheticRecord, canonical syntheticRecord) (syntheticRecord, error) {
+			canonicalNames = append(canonicalNames, canonical.Name)
+			canonical.Notes = []string{members[0].Name, members[1].Name}
+			return canonical, nil
+		},
+	})
+	if err != nil {
+		t.Fatalf("ApplyPlan() error = %v", err)
+	}
+
+	got := result.Records()
+	if names := recordNames(got); !reflect.DeepEqual(names, []string{"bravo", "charlie"}) {
+		t.Fatalf("record names = %v, want [bravo charlie]", names)
+	}
+	if !reflect.DeepEqual(canonicalNames, []string{"charlie", "bravo"}) {
+		t.Fatalf("canonical values = %v, want [charlie bravo]", canonicalNames)
+	}
+	if indexes := got[0].OriginalInputIndexes(); !reflect.DeepEqual(indexes, []int{0, 1, 2, 3}) {
+		t.Fatalf("first provenance indexes = %v, want [0 1 2 3]", indexes)
+	}
+	if indexes := got[1].OriginalInputIndexes(); !reflect.DeepEqual(indexes, []int{2, 4}) {
+		t.Fatalf("second provenance indexes = %v, want [2 4]", indexes)
+	}
+	if got[0].EarliestInputPosition() != 0 || got[1].EarliestInputPosition() != 2 {
+		t.Fatalf("earliest positions = [%d %d], want [0 2]", got[0].EarliestInputPosition(), got[1].EarliestInputPosition())
+	}
+
+	events := result.AppliedGroups()
+	if len(events) != 2 || len(result.RejectedGroups()) != 0 {
+		t.Fatalf("event counts = applied %d rejected %d, want 2 and 0", len(events), len(result.RejectedGroups()))
+	}
+	first := events[0].Provenance()
+	if !reflect.DeepEqual(first.MemberPositions(), []int{0, 2}) || first.CanonicalPosition() != 2 || !reflect.DeepEqual(first.OriginalInputIndexes(), []int{2, 4}) || first.EarliestInputPosition() != 2 {
+		t.Fatalf("first applied provenance = members %v canonical %d indexes %v earliest %d", first.MemberPositions(), first.CanonicalPosition(), first.OriginalInputIndexes(), first.EarliestInputPosition())
+	}
+}
+
+func TestApplyPlanWithoutGroupsReturnsOwnedRecordsInProvenanceOrder(t *testing.T) {
+	records := syntheticRecords(t,
+		recordFixture{"alpha", []int{2}, 2},
+		recordFixture{"bravo", []int{0}, 0},
+		recordFixture{"charlie", []int{1}, 1},
+	)
+	result, err := ApplyPlan(Plan{}, records, syntheticPolicy())
+	if err != nil {
+		t.Fatalf("ApplyPlan() error = %v", err)
+	}
+	if names := recordNames(result.Records()); !reflect.DeepEqual(names, []string{"bravo", "charlie", "alpha"}) {
+		t.Fatalf("record names = %v, want [bravo charlie alpha]", names)
+	}
+	if result.AppliedGroups() != nil || result.RejectedGroups() != nil {
+		t.Fatalf("events = applied %#v rejected %#v, want nil", result.AppliedGroups(), result.RejectedGroups())
+	}
+
+	value := result.Records()[0].Value()
+	value.Notes[0] = "changed"
+	if records[1].Value().Notes[0] != "bravo" || result.Records()[0].Value().Notes[0] != "bravo" {
+		t.Fatal("no-group result shares mutable value state")
+	}
+}
+
+func TestApplyPlanPreservesUngroupedRecordsAndOwnsResults(t *testing.T) {
+	records := syntheticRecords(t,
+		recordFixture{"alpha", []int{4}, 4},
+		recordFixture{"bravo", []int{1}, 1},
+		recordFixture{"charlie", []int{2}, 2},
+	)
+	result, err := ApplyPlan(Plan{groups: []PlanGroup{{memberPositions: []int{0, 2}, canonicalPosition: 0}}}, records, syntheticPolicy())
+	if err != nil {
+		t.Fatalf("ApplyPlan() error = %v", err)
+	}
+	if names := recordNames(result.Records()); !reflect.DeepEqual(names, []string{"bravo", "alpha"}) {
+		t.Fatalf("record names = %v, want ungrouped bravo then consolidated alpha", names)
+	}
+
+	firstRead := result.Records()
+	firstValue := firstRead[0].Value()
+	firstValue.Notes[0] = "changed"
+	firstRead[0].originalInputIndexes[0] = 99
+	if again := result.Records(); again[0].Value().Notes[0] != "bravo" || !reflect.DeepEqual(again[0].OriginalInputIndexes(), []int{1}) {
+		t.Fatalf("result retained accessor mutations: %#v", again[0])
+	}
+	if original := records[1].Value(); original.Notes[0] != "bravo" {
+		t.Fatalf("input record was mutated: %#v", original)
+	}
+}
+
+func TestApplyPlanGuardRejectionPreservesEveryMemberOnce(t *testing.T) {
+	records := syntheticRecords(t,
+		recordFixture{"alpha", []int{3}, 3},
+		recordFixture{"bravo", []int{1}, 1},
+		recordFixture{"charlie", []int{2}, 2},
+	)
+	consolidations := 0
+	result, err := ApplyPlan(Plan{groups: []PlanGroup{{memberPositions: []int{0, 2}, canonicalPosition: 2}}}, records, ApplicationPolicy[syntheticRecord]{
+		CloneValue: cloneSyntheticRecord,
+		RejectGroup: func(members []syntheticRecord, canonical syntheticRecord) RejectionCategory {
+			members[0].Notes[0] = "guard mutation"
+			canonical.Notes[0] = "canonical mutation"
+			return "typed_constraint"
+		},
+		ConsolidateGroup: func([]syntheticRecord, syntheticRecord) (syntheticRecord, error) {
+			consolidations++
+			return syntheticRecord{}, nil
+		},
+	})
+	if err != nil {
+		t.Fatalf("ApplyPlan() error = %v", err)
+	}
+	if consolidations != 0 {
+		t.Fatalf("consolidation calls = %d, want 0", consolidations)
+	}
+	if names := recordNames(result.Records()); !reflect.DeepEqual(names, []string{"bravo", "charlie", "alpha"}) {
+		t.Fatalf("preserved record names = %v, want [bravo charlie alpha]", names)
+	}
+	for index, record := range records {
+		if got := record.Value().Notes[0]; got != record.Value().Name {
+			t.Fatalf("input record %d note = %q after guard, want original", index, got)
+		}
+	}
+	rejected := result.RejectedGroups()
+	if len(rejected) != 1 || rejected[0].Category() != "typed_constraint" {
+		t.Fatalf("rejected events = %#v, want typed_constraint", rejected)
+	}
+	provenance := rejected[0].Provenance()
+	if !reflect.DeepEqual(provenance.MemberPositions(), []int{0, 2}) || !reflect.DeepEqual(provenance.OriginalInputIndexes(), []int{2, 3}) || provenance.EarliestInputPosition() != 2 {
+		t.Fatalf("rejected provenance = members %v indexes %v earliest %d", provenance.MemberPositions(), provenance.OriginalInputIndexes(), provenance.EarliestInputPosition())
+	}
+}
+
+func TestApplyPlanSuppliesFreshPolicyValuesAndDoesNotMutateInputs(t *testing.T) {
+	records := syntheticRecords(t,
+		recordFixture{"alpha", []int{0}, 0},
+		recordFixture{"bravo", []int{1}, 1},
+	)
+	result, err := ApplyPlan(Plan{groups: []PlanGroup{{memberPositions: []int{0, 1}, canonicalPosition: 1}}}, records, ApplicationPolicy[syntheticRecord]{
+		CloneValue: cloneSyntheticRecord,
+		RejectGroup: func(members []syntheticRecord, canonical syntheticRecord) RejectionCategory {
+			members[0].Name = "guard mutation"
+			canonical.Name = "guard canonical mutation"
+			return ""
+		},
+		ConsolidateGroup: func(members []syntheticRecord, canonical syntheticRecord) (syntheticRecord, error) {
+			if members[0].Name != "alpha" || canonical.Name != "bravo" {
+				t.Fatalf("consolidation observed guard mutations: members %#v canonical %#v", members, canonical)
+			}
+			members[0].Notes[0] = "consolidator mutation"
+			canonical.Notes = []string{"result"}
+			return canonical, nil
+		},
+	})
+	if err != nil {
+		t.Fatalf("ApplyPlan() error = %v", err)
+	}
+	if got := result.Records()[0].Value(); got.Name != "bravo" || !reflect.DeepEqual(got.Notes, []string{"result"}) {
+		t.Fatalf("consolidated value = %#v", got)
+	}
+	if records[0].Value().Notes[0] != "alpha" || records[1].Value().Notes[0] != "bravo" {
+		t.Fatalf("input records changed: %#v %#v", records[0].Value(), records[1].Value())
+	}
+}
+
+func TestApplyPlanRejectsMalformedPlans(t *testing.T) {
+	records := syntheticRecords(t,
+		recordFixture{"alpha", nil, 0},
+		recordFixture{"bravo", nil, 1},
+		recordFixture{"charlie", nil, 2},
+	)
+	tests := []struct {
+		name string
+		plan Plan
+		want string
+	}{
+		{name: "member out of range", plan: Plan{groups: []PlanGroup{{memberPositions: []int{0, 3}, canonicalPosition: 0}}}, want: "outside record range"},
+		{name: "canonical out of range", plan: Plan{groups: []PlanGroup{{memberPositions: []int{0, 1}, canonicalPosition: 3}}}, want: "canonical position"},
+		{name: "canonical not a member", plan: Plan{groups: []PlanGroup{{memberPositions: []int{0, 1}, canonicalPosition: 2}}}, want: "is not a member"},
+		{name: "duplicate member", plan: Plan{groups: []PlanGroup{{memberPositions: []int{0, 0}, canonicalPosition: 0}}}, want: "ascending and unique"},
+		{name: "overlapping groups", plan: Plan{groups: []PlanGroup{{memberPositions: []int{0, 1}, canonicalPosition: 0}, {memberPositions: []int{1, 2}, canonicalPosition: 1}}}, want: "multiple groups"},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			_, err := ApplyPlan(test.plan, records, syntheticPolicy())
+			if err == nil || !strings.Contains(err.Error(), test.want) {
+				t.Fatalf("ApplyPlan() error = %v, want containing %q", err, test.want)
+			}
+		})
+	}
+}
+
+func TestApplyPlanReturnsConsolidationFailures(t *testing.T) {
+	records := syntheticRecords(t,
+		recordFixture{"alpha", nil, 0},
+		recordFixture{"bravo", nil, 1},
+	)
+	want := errors.New("cannot consolidate")
+	result, err := ApplyPlan(Plan{groups: []PlanGroup{{memberPositions: []int{0, 1}, canonicalPosition: 0}}}, records, ApplicationPolicy[syntheticRecord]{
+		CloneValue: cloneSyntheticRecord,
+		ConsolidateGroup: func([]syntheticRecord, syntheticRecord) (syntheticRecord, error) {
+			return syntheticRecord{}, want
+		},
+	})
+	if !errors.Is(err, want) || !strings.Contains(err.Error(), "position 0") {
+		t.Fatalf("ApplyPlan() error = %v, want contextual wrapped failure", err)
+	}
+	if result.Records() != nil || result.AppliedGroups() != nil || result.RejectedGroups() != nil {
+		t.Fatalf("ApplyPlan() partial result = %#v, want zero result", result)
+	}
+}
+
+func TestApplyPlanPreservesNilAndEmptyRecordCollections(t *testing.T) {
+	policy := syntheticPolicy()
+	nilResult, err := ApplyPlan(Plan{}, []Record[syntheticRecord](nil), policy)
+	if err != nil {
+		t.Fatalf("ApplyPlan(nil) error = %v", err)
+	}
+	emptyResult, err := ApplyPlan(Plan{}, []Record[syntheticRecord]{}, policy)
+	if err != nil {
+		t.Fatalf("ApplyPlan(empty) error = %v", err)
+	}
+	if nilResult.Records() != nil {
+		t.Fatal("nil records became non-nil")
+	}
+	if got := emptyResult.Records(); got == nil || len(got) != 0 {
+		t.Fatalf("empty records = %#v, want non-nil empty", got)
+	}
+}
+
+func TestApplyPlanValidatesPolicyAndRecordState(t *testing.T) {
+	valid := syntheticPolicy()
+	if _, err := ApplyPlan(Plan{}, []Record[syntheticRecord]{}, ApplicationPolicy[syntheticRecord]{ConsolidateGroup: valid.ConsolidateGroup}); err == nil {
+		t.Fatal("ApplyPlan() accepted nil clone function")
+	}
+	if _, err := ApplyPlan(Plan{}, []Record[syntheticRecord]{}, ApplicationPolicy[syntheticRecord]{CloneValue: cloneSyntheticRecord}); err == nil {
+		t.Fatal("ApplyPlan() accepted nil consolidate function")
+	}
+	if _, err := ApplyPlan(Plan{}, []Record[syntheticRecord]{{}}, valid); err == nil || !strings.Contains(err.Error(), "record 0") {
+		t.Fatalf("ApplyPlan() invalid record error = %v", err)
+	}
+
+	records := syntheticRecords(t,
+		recordFixture{"alpha", nil, 0},
+		recordFixture{"bravo", nil, 1},
+	)
+	valid.RejectGroup = func([]syntheticRecord, syntheticRecord) RejectionCategory { return " " }
+	if _, err := ApplyPlan(Plan{groups: []PlanGroup{{memberPositions: []int{0, 1}, canonicalPosition: 0}}}, records, valid); err == nil || !strings.Contains(err.Error(), "category") {
+		t.Fatalf("ApplyPlan() blank category error = %v", err)
+	}
+}
+
+type recordFixture struct {
+	name     string
+	indexes  []int
+	earliest int
+}
+
+func syntheticRecords(t *testing.T, fixtures ...recordFixture) []Record[syntheticRecord] {
+	t.Helper()
+	records := make([]Record[syntheticRecord], len(fixtures))
+	for index, fixture := range fixtures {
+		record, err := NewRecord(syntheticRecord{Name: fixture.name, Notes: []string{fixture.name}}, fixture.indexes, fixture.earliest, cloneSyntheticRecord)
+		if err != nil {
+			t.Fatalf("NewRecord(%d) error = %v", index, err)
+		}
+		records[index] = record
+	}
+	return records
+}
+
+func syntheticPolicy() ApplicationPolicy[syntheticRecord] {
+	return ApplicationPolicy[syntheticRecord]{
+		CloneValue: cloneSyntheticRecord,
+		ConsolidateGroup: func(_ []syntheticRecord, canonical syntheticRecord) (syntheticRecord, error) {
+			return canonical, nil
+		},
+	}
+}
+
+func recordNames(records []Record[syntheticRecord]) []string {
+	names := make([]string, len(records))
+	for index, record := range records {
+		names[index] = record.Value().Name
+	}
+	return names
+}

internal/framework/semanticreconcile/assets.go

@@ -0,0 +1,111 @@
+package semanticreconcile
+
+import (
+	"errors"
+	"fmt"
+	"io/fs"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/promptfs"
+)
+
+const (
+	PromptID      = "generic.semantic_reconciliation"
+	PromptVersion = "v1"
+	promptRoot    = "assets/prompts"
+)
+
+var promptFiles = []promptfs.ModulePromptFile{
+	{Name: "prompt.yaml", Path: "prompts/prompt.yaml"},
+	{Name: "system.md", Path: "prompts/system.md"},
+	{Name: "protocol.md", Path: "prompts/protocol.md"},
+	{Name: "instructions.md", Path: "prompts/instructions.md"},
+	{Name: "candidates.md", Path: "prompts/candidates.md"},
+	{Name: "transcript-windows.md", Path: "prompts/transcript-windows.md"},
+}
+
+// RegisterAssets registers the generic reconciliation prompt and response
+// schema as one production-owned asset set.
+func RegisterAssets(registry *llm.AssetRegistry) error {
+	if registry == nil {
+		return fmt.Errorf("semantic reconciliation asset registry must not be nil")
+	}
+	if err := ensureAssetsAbsent(registry); err != nil {
+		return err
+	}
+
+	assets, err := assetFS()
+	if err != nil {
+		return err
+	}
+	prompts, err := promptfs.ModulePromptFS(PromptID, assets, append([]promptfs.ModulePromptFile(nil), promptFiles...))
+	if err != nil {
+		return fmt.Errorf("prepare semantic reconciliation prompt assets: %w", err)
+	}
+	if err := registry.RegisterPromptFS(prompts, promptRoot); err != nil {
+		return fmt.Errorf("register semantic reconciliation prompt assets: %w", err)
+	}
+	if err := registry.RegisterSchemaFS(assets, "schemas"); err != nil {
+		return fmt.Errorf("register semantic reconciliation schema assets: %w", err)
+	}
+	return nil
+}
+
+// PromptHash returns the deterministic identity of the complete generic prompt.
+func PromptHash() (string, error) {
+	assets, err := assetFS()
+	if err != nil {
+		return "", err
+	}
+	parts := make([]llm.AssetHashPart, 0, len(promptFiles))
+	for _, file := range promptFiles {
+		parts = append(parts, llm.AssetHashPart{FS: assets, Path: file.Path})
+	}
+	return llm.HashAssets(parts)
+}
+
+// SchemaHash returns the deterministic identity of the response schema.
+func SchemaHash() (string, error) {
+	schema, err := LoadResponseSchema()
+	if err != nil {
+		return "", err
+	}
+	return schema.SHA256, nil
+}
+
+// SharedPromptFiles returns fresh descriptors for the mandatory protocol and
+// variable-input presentation assets that domain prompts may reuse.
+func SharedPromptFiles() ([]promptfs.SharedPromptFile, error) {
+	assets, err := assetFS()
+	if err != nil {
+		return nil, err
+	}
+	return []promptfs.SharedPromptFile{
+		{Name: "protocol.md", FS: assets, Path: "prompts/protocol.md"},
+		{Name: "candidates.md", FS: assets, Path: "prompts/candidates.md"},
+		{Name: "transcript-windows.md", FS: assets, Path: "prompts/transcript-windows.md"},
+	}, nil
+}
+
+func ensureAssetsAbsent(registry *llm.AssetRegistry) error {
+	prompts, err := registry.PromptFS()
+	if err != nil {
+		return fmt.Errorf("inspect registered prompt assets: %w", err)
+	}
+	if _, err := fs.Stat(prompts, PromptID+"/prompt.yaml"); err == nil {
+		return fmt.Errorf("semantic reconciliation prompt assets already registered")
+	} else if !errors.Is(err, fs.ErrNotExist) {
+		return fmt.Errorf("inspect semantic reconciliation prompt assets: %w", err)
+	}
+
+	schemas, err := registry.SchemaFS()
+	if err != nil {
+		return fmt.Errorf("inspect registered schema assets: %w", err)
+	}
+	if _, err := fs.Stat(schemas, "semantic_reconciliation_llm.v1.json"); err == nil {
+		return fmt.Errorf("semantic reconciliation schema assets already registered")
+	} else if !errors.Is(err, fs.ErrNotExist) {
+		return fmt.Errorf("inspect semantic reconciliation schema assets: %w", err)
+	}
+	return nil
+}

internal/framework/semanticreconcile/assets_test.go

@@ -0,0 +1,118 @@
+package semanticreconcile
+
+import (
+	"context"
+	"io/fs"
+	"reflect"
+	"strings"
+	"testing"
+	"time"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
+	"gitea.maximumdirect.net/eric/promptkit"
+)
+
+func TestRegisterAssetsPreparesGenericPromptOffline(t *testing.T) {
+	registry := llm.NewAssetRegistry()
+	if err := RegisterAssets(registry); err != nil {
+		t.Fatalf("RegisterAssets() error = %v, want nil", err)
+	}
+	options, err := registry.PromptKitOptions()
+	if err != nil {
+		t.Fatalf("PromptKitOptions() error = %v, want nil", err)
+	}
+	options = append(options, promptkit.WithProfiles(promptkit.OpenAICompatibleProfile(promptkit.OpenAICompatibleProfileConfig{
+		ID: "semantic-reconciliation-test", Endpoint: "http://127.0.0.1:1/v1", Model: "offline-test-model",
+	})))
+	engine, err := promptkit.NewEngine(promptkit.Config{Timeout: time.Second}, options...)
+	if err != nil {
+		t.Fatalf("NewEngine() error = %v, want nil", err)
+	}
+	prepared, err := engine.Prepare(context.Background(), promptkit.RunRequest{
+		PromptID: PromptID, PromptVersion: PromptVersion, ProfileID: "semantic-reconciliation-test",
+		Inputs: map[string]promptkit.ArtifactRef{
+			"candidates": promptkit.Inline(`{"candidates":[{"candidate_id":1,"label":"Mira"},{"candidate_id":2,"label":"Captain Mira"}]}`),
+			"transcript": promptkit.Inline(`{"windows":[{"units":[{"unit_id":7,"text":"Mira arrived."}]}]}`),
+		},
+	})
+	if err != nil {
+		t.Fatalf("Prepare() error = %v, want nil", err)
+	}
+
+	if prepared.PromptID != PromptID || prepared.PromptVersion != PromptVersion {
+		t.Fatalf("prepared prompt identity = %q %q, want %q %q", prepared.PromptID, prepared.PromptVersion, PromptID, PromptVersion)
+	}
+	if prepared.SelectedProfileID != "semantic-reconciliation-test" {
+		t.Fatalf("selected profile = %q, want explicit test profile", prepared.SelectedProfileID)
+	}
+	if contract := prepared.OutputContract; contract.SchemaPath != "semantic_reconciliation_llm.v1.json" || contract.RepairAttempts != 0 {
+		t.Fatalf("output contract = %#v, want generic schema without repair", contract)
+	}
+	if len(prepared.Messages) != 5 || prepared.Messages[0].Role != "system" {
+		t.Fatalf("prepared messages = %#v, want five ordered messages beginning with system", prepared.Messages)
+	}
+	if cache := prepared.Messages[2].CacheControl; cache == nil || cache.Type != promptkit.CacheControlEphemeral {
+		t.Fatalf("semantic policy cache control = %#v, want ephemeral", cache)
+	}
+	for _, index := range []int{0, 1, 3, 4} {
+		if prepared.Messages[index].CacheControl != nil {
+			t.Fatalf("message %d cache control = %#v, want nil", index, prepared.Messages[index].CacheControl)
+		}
+	}
+	protocol := prepared.Messages[1].Content
+	for _, requirement := range []string{"positive integer", "Return IDs only", "do not copy candidate names", "source ranges"} {
+		if !strings.Contains(protocol, requirement) {
+			t.Fatalf("protocol message = %q, want requirement %q", protocol, requirement)
+		}
+	}
+	if !strings.Contains(prepared.Messages[3].Content, `"candidate_id":1`) || strings.Contains(prepared.Messages[3].Content, `"windows"`) {
+		t.Fatalf("candidate message = %q, want only integer candidate material", prepared.Messages[3].Content)
+	}
+	if !strings.Contains(prepared.Messages[4].Content, `"windows"`) || strings.Contains(prepared.Messages[4].Content, `"candidate_id"`) {
+		t.Fatalf("transcript message = %q, want only transcript windows", prepared.Messages[4].Content)
+	}
+}
+
+func TestAssetHashesAreDeterministicAndComplete(t *testing.T) {
+	firstPrompt, err := PromptHash()
+	if err != nil {
+		t.Fatal(err)
+	}
+	secondPrompt, err := PromptHash()
+	if err != nil {
+		t.Fatal(err)
+	}
+	schemaHash, err := SchemaHash()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if firstPrompt == "" || firstPrompt != secondPrompt || schemaHash == "" || firstPrompt == schemaHash {
+		t.Fatalf("asset hashes = prompt %q/%q schema %q, want stable distinct hashes", firstPrompt, secondPrompt, schemaHash)
+	}
+}
+
+func TestSharedPromptFilesExposeOnlyReusableCoreAssets(t *testing.T) {
+	first, err := SharedPromptFiles()
+	if err != nil {
+		t.Fatal(err)
+	}
+	second, err := SharedPromptFiles()
+	if err != nil {
+		t.Fatal(err)
+	}
+	wantNames := []string{"protocol.md", "candidates.md", "transcript-windows.md"}
+	gotNames := make([]string, len(first))
+	for index, file := range first {
+		gotNames[index] = file.Name
+		if content, err := fs.ReadFile(file.FS, file.Path); err != nil || len(content) == 0 {
+			t.Fatalf("shared file %q = %q, %v; want readable content", file.Name, content, err)
+		}
+	}
+	if !reflect.DeepEqual(gotNames, wantNames) {
+		t.Fatalf("shared files = %#v, want narrow allowlist %#v", gotNames, wantNames)
+	}
+	first[0].Name = "changed.md"
+	if second[0].Name != "protocol.md" {
+		t.Fatalf("SharedPromptFiles() reused mutable descriptors: %#v", second)
+	}
+}

internal/framework/semanticreconcile/doc.go

@@ -0,0 +1,3 @@
+// Package semanticreconcile prepares, executes, and validates bounded
+// domain-neutral semantic reconciliation requests.
+package semanticreconcile

internal/framework/semanticreconcile/engine.go

@@ -0,0 +1,210 @@
+package semanticreconcile
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
+)
+
+// PromptSpec identifies the exact prompt selected by a reconciliation owner.
+type PromptSpec struct {
+	ID      string
+	Version string
+	SHA256  string
+}
+
+// Validate rejects incomplete prompt identity and non-canonical digests.
+func (spec PromptSpec) Validate() error {
+	if strings.TrimSpace(spec.ID) == "" {
+		return fmt.Errorf("semantic reconciliation prompt ID must not be empty")
+	}
+	if strings.TrimSpace(spec.Version) == "" {
+		return fmt.Errorf("semantic reconciliation prompt version must not be empty")
+	}
+	if err := validateSHA256(spec.SHA256); err != nil {
+		return fmt.Errorf("semantic reconciliation prompt digest: %w", err)
+	}
+	return nil
+}
+
+// DefaultPromptSpec returns the identity of the core-owned generic prompt.
+func DefaultPromptSpec() (PromptSpec, error) {
+	digest, err := PromptHash()
+	if err != nil {
+		return PromptSpec{}, err
+	}
+	return PromptSpec{ID: PromptID, Version: PromptVersion, SHA256: digest}, nil
+}
+
+// Request contains one typed owner's source-backed reconciliation input.
+type Request struct {
+	StageName  string
+	Source     *source.SourceDocument
+	Candidates []Candidate
+	ProfileID  string
+	SessionID  string
+}
+
+// ResultDisposition classifies a provider-neutral reconciliation outcome.
+type ResultDisposition uint8
+
+const (
+	Complete ResultDisposition = iota + 1
+	RetryableInvalidStructuredOutput
+	RetryableDiscardedProposalGroups
+	SkippedInsufficientCandidates
+	SkippedLimitExceeded
+)
+
+// Result owns the safe plan and neutral diagnostics from one call.
+type Result struct {
+	disposition         ResultDisposition
+	plan                Plan
+	issues              []Issue
+	discardedGroupCount int
+	candidateMappings   []CandidateMapping
+}
+
+// Disposition returns the classified outcome.
+func (result Result) Disposition() ResultDisposition { return result.disposition }
+
+// Plan returns an independently owned safe plan.
+func (result Result) Plan() Plan { return result.planCopy() }
+
+// Issues returns an owned copy of stable proposal issues.
+func (result Result) Issues() []Issue { return append([]Issue(nil), result.issues...) }
+
+// DiscardedGroupCount returns the number of excluded proposal groups.
+func (result Result) DiscardedGroupCount() int { return result.discardedGroupCount }
+
+// CandidateMappings returns the request-local handle mapping used for this call.
+func (result Result) CandidateMappings() []CandidateMapping {
+	return append([]CandidateMapping(nil), result.candidateMappings...)
+}
+
+func (result Result) planCopy() Plan {
+	return Plan{groups: result.plan.Groups()}
+}
+
+// Engine prepares bounded material, performs one structured completion, and
+// classifies the deterministic assessment without applying it to typed values.
+type Engine struct {
+	client contracts.StructuredLLMClient
+	prompt PromptSpec
+	schema llm.ResponseSchema
+	limits Limits
+}
+
+// NewEngine constructs a reconciliation engine using the core response schema.
+func NewEngine(client contracts.StructuredLLMClient, prompt PromptSpec, limits Limits) (*Engine, error) {
+	if client == nil {
+		return nil, fmt.Errorf("construct semantic reconciliation engine: LLM client must not be nil")
+	}
+	if err := prompt.Validate(); err != nil {
+		return nil, fmt.Errorf("construct semantic reconciliation engine: %w", err)
+	}
+	if err := limits.Validate(); err != nil {
+		return nil, fmt.Errorf("construct semantic reconciliation engine: %w", err)
+	}
+	schema, err := LoadResponseSchema()
+	if err != nil {
+		return nil, fmt.Errorf("construct semantic reconciliation engine: load response schema: %w", err)
+	}
+	return newEngine(client, prompt, schema, limits), nil
+}
+
+func newEngine(client contracts.StructuredLLMClient, prompt PromptSpec, schema llm.ResponseSchema, limits Limits) *Engine {
+	return &Engine{client: client, prompt: prompt, schema: schema, limits: limits}
+}
+
+// Reconcile prepares and assesses one request. Retryable semantic outcomes are
+// returned as results; provider and transport failures remain errors.
+func (engine *Engine) Reconcile(ctx context.Context, request Request) (Result, error) {
+	if err := engine.validate(); err != nil {
+		return Result{}, err
+	}
+	if ctx == nil {
+		return Result{}, fmt.Errorf("semantic reconciliation %q: context must not be nil", request.StageName)
+	}
+	if strings.TrimSpace(request.StageName) == "" {
+		return Result{}, fmt.Errorf("semantic reconciliation stage name must not be empty")
+	}
+	if request.Source == nil {
+		return Result{}, fmt.Errorf("semantic reconciliation %q: source document must not be nil", request.StageName)
+	}
+	if err := ctx.Err(); err != nil {
+		return Result{}, fmt.Errorf("semantic reconciliation %q: context error before preparation: %w", request.StageName, err)
+	}
+
+	preparation, err := Prepare(request.Source, request.Candidates, engine.limits)
+	if err != nil {
+		return Result{}, fmt.Errorf("semantic reconciliation %q: prepare materials: %w", request.StageName, err)
+	}
+	result := Result{candidateMappings: preparation.CandidateMappings()}
+	switch preparation.Disposition() {
+	case InsufficientCandidates:
+		result.disposition = SkippedInsufficientCandidates
+		return result, nil
+	case LimitExceeded:
+		result.disposition = SkippedLimitExceeded
+		return result, nil
+	case Ready:
+	default:
+		return Result{}, fmt.Errorf("semantic reconciliation %q: unknown preparation disposition %d", request.StageName, preparation.Disposition())
+	}
+
+	if err := ctx.Err(); err != nil {
+		return Result{}, fmt.Errorf("semantic reconciliation %q: context error before completion: %w", request.StageName, err)
+	}
+	var response ProposalResponse
+	_, err = engine.client.CompleteStructured(ctx, contracts.StructuredCompletionRequest{
+		StageName:     request.StageName,
+		PromptID:      engine.prompt.ID,
+		PromptVersion: engine.prompt.Version,
+		ProfileID:     request.ProfileID,
+		SessionID:     request.SessionID,
+		Inputs:        preparation.Materials(),
+	}, &response)
+	if err != nil {
+		if errors.Is(err, contracts.ErrInvalidStructuredOutput) {
+			result.disposition = RetryableInvalidStructuredOutput
+			return result, nil
+		}
+		return Result{}, fmt.Errorf("semantic reconciliation %q: complete structured output: %w", request.StageName, err)
+	}
+
+	assessment := preparation.Assess(response)
+	result.plan = assessment.Plan()
+	result.issues = assessment.Issues()
+	result.discardedGroupCount = assessment.DiscardedGroupCount()
+	if result.discardedGroupCount > 0 {
+		result.disposition = RetryableDiscardedProposalGroups
+	} else {
+		result.disposition = Complete
+	}
+	return result, nil
+}
+
+func (engine *Engine) validate() error {
+	if engine == nil {
+		return fmt.Errorf("semantic reconciliation engine must not be nil")
+	}
+	if engine.client == nil {
+		return fmt.Errorf("semantic reconciliation engine: LLM client must not be nil")
+	}
+	if err := engine.prompt.Validate(); err != nil {
+		return fmt.Errorf("semantic reconciliation engine: invalid construction state: %w", err)
+	}
+	if err := engine.limits.Validate(); err != nil {
+		return fmt.Errorf("semantic reconciliation engine: invalid construction state: %w", err)
+	}
+	if err := validateResponseSchemaIdentity(engine.schema); err != nil {
+		return fmt.Errorf("semantic reconciliation engine: invalid construction state: %w", err)
+	}
+	return nil
+}

internal/framework/semanticreconcile/engine_test.go

@@ -0,0 +1,304 @@
+package semanticreconcile
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"reflect"
+	"strings"
+	"testing"
+	"time"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
+)
+
+func TestNewEngineValidatesConstruction(t *testing.T) {
+	prompt := testPromptSpec("a")
+	tests := []struct {
+		name   string
+		client contracts.StructuredLLMClient
+		prompt PromptSpec
+		limits Limits
+		want   string
+	}{
+		{name: "nil client", prompt: prompt, limits: DefaultLimits(), want: "client"},
+		{name: "empty prompt ID", client: &recordingReconciliationClient{}, prompt: PromptSpec{Version: "v1", SHA256: testDigest("a")}, limits: DefaultLimits(), want: "prompt ID"},
+		{name: "empty prompt version", client: &recordingReconciliationClient{}, prompt: PromptSpec{ID: "prompt", SHA256: testDigest("a")}, limits: DefaultLimits(), want: "prompt version"},
+		{name: "missing digest", client: &recordingReconciliationClient{}, prompt: PromptSpec{ID: "prompt", Version: "v1"}, limits: DefaultLimits(), want: "digest"},
+		{name: "wrong digest algorithm", client: &recordingReconciliationClient{}, prompt: PromptSpec{ID: "prompt", Version: "v1", SHA256: "md5:" + strings.Repeat("a", 32)}, limits: DefaultLimits(), want: "sha256:"},
+		{name: "non canonical digest", client: &recordingReconciliationClient{}, prompt: PromptSpec{ID: "prompt", Version: "v1", SHA256: "sha256:" + strings.Repeat("A", 64)}, limits: DefaultLimits(), want: "lowercase"},
+		{name: "invalid limits", client: &recordingReconciliationClient{}, prompt: prompt, limits: Limits{}, want: "limits"},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if _, err := NewEngine(test.client, test.prompt, test.limits); err == nil || !strings.Contains(err.Error(), test.want) {
+				t.Fatalf("NewEngine() error = %v, want %q", err, test.want)
+			}
+		})
+	}
+
+	defaultPrompt, err := DefaultPromptSpec()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if defaultPrompt.ID != PromptID || defaultPrompt.Version != PromptVersion || defaultPrompt.SHA256 == "" {
+		t.Fatalf("DefaultPromptSpec() = %#v, want complete generic prompt identity", defaultPrompt)
+	}
+}
+
+func TestEnginePropagatesRequestAndAssessesResponse(t *testing.T) {
+	client := &recordingReconciliationClient{responses: []ProposalResponse{{DuplicateGroups: []DuplicateGroup{{
+		CandidateIDs: []int{1, 2}, CanonicalCandidateID: 2,
+	}}}}}
+	engine := newTestEngine(t, client, DefaultLimits())
+	request := readyEngineRequest()
+	request.ProfileID = " profile-as-resolved "
+	request.SessionID = " session-as-supplied "
+
+	result, err := engine.Reconcile(context.Background(), request)
+	if err != nil {
+		t.Fatalf("Reconcile() error = %v, want nil", err)
+	}
+	if result.Disposition() != Complete || result.DiscardedGroupCount() != 0 || len(result.Issues()) != 0 {
+		t.Fatalf("result = disposition %v discarded %d issues %#v", result.Disposition(), result.DiscardedGroupCount(), result.Issues())
+	}
+	groups := result.Plan().Groups()
+	if len(groups) != 1 || !reflect.DeepEqual(groups[0].MemberPositions(), []int{0, 1}) || groups[0].CanonicalPosition() != 1 {
+		t.Fatalf("safe plan = %#v", groups)
+	}
+	if len(client.requests) != 1 {
+		t.Fatalf("completion calls = %d, want exactly one", len(client.requests))
+	}
+	got := client.requests[0]
+	if got.StageName != request.StageName || got.PromptID != engine.prompt.ID || got.PromptVersion != engine.prompt.Version || got.ProfileID != request.ProfileID || got.SessionID != request.SessionID {
+		t.Fatalf("structured request = %#v, want exact routing values", got)
+	}
+	if len(got.Inputs) != 2 || got.Inputs["candidates"].Name != "candidates" || got.Inputs["transcript"].Name != "transcript" || len(got.Vars) != 0 {
+		t.Fatalf("structured request inputs = %#v vars = %#v, want only candidate and transcript materials", got.Inputs, got.Vars)
+	}
+}
+
+func TestEngineClassifiesSemanticAndTransportOutcomes(t *testing.T) {
+	transportErr := errors.New("provider unavailable")
+	tests := []struct {
+		name        string
+		response    ProposalResponse
+		completion  error
+		want        ResultDisposition
+		wantDiscard int
+		wantIssues  bool
+		wantError   error
+	}{
+		{name: "empty groups complete", response: ProposalResponse{DuplicateGroups: []DuplicateGroup{}}, want: Complete},
+		{name: "discarded proposal retryable", response: ProposalResponse{DuplicateGroups: []DuplicateGroup{{CandidateIDs: []int{1, 99}, CanonicalCandidateID: 1}}}, want: RetryableDiscardedProposalGroups, wantDiscard: 1, wantIssues: true},
+		{name: "invalid structured output retryable", completion: fmt.Errorf("decode response: %w", contracts.ErrInvalidStructuredOutput), want: RetryableInvalidStructuredOutput},
+		{name: "transport failure", completion: transportErr, wantError: transportErr},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			client := &recordingReconciliationClient{responses: []ProposalResponse{test.response}, errors: []error{test.completion}}
+			result, err := newTestEngine(t, client, DefaultLimits()).Reconcile(context.Background(), readyEngineRequest())
+			if test.wantError != nil {
+				if !errors.Is(err, test.wantError) || !strings.Contains(err.Error(), readyEngineRequest().StageName) {
+					t.Fatalf("Reconcile() error = %v, want contextual %v", err, test.wantError)
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("Reconcile() error = %v, want nil", err)
+			}
+			if result.Disposition() != test.want || result.DiscardedGroupCount() != test.wantDiscard || (len(result.Issues()) > 0) != test.wantIssues {
+				t.Fatalf("result = disposition %v discarded %d issues %#v", result.Disposition(), result.DiscardedGroupCount(), result.Issues())
+			}
+			if len(client.requests) != 1 {
+				t.Fatalf("completion calls = %d, want one", len(client.requests))
+			}
+		})
+	}
+}
+
+func TestEngineSkipsDeterministicOutcomesWithoutCompletion(t *testing.T) {
+	tests := []struct {
+		name       string
+		request    Request
+		limits     Limits
+		want       ResultDisposition
+		mappingLen int
+	}{
+		{name: "insufficient candidates", request: engineRequestWithCandidateCount(1), limits: DefaultLimits(), want: SkippedInsufficientCandidates, mappingLen: 1},
+		{name: "candidate limit", request: engineRequestWithCandidateCount(2), limits: Limits{ContextRadius: 0, MaximumCandidates: 1, MaximumMaterialBytes: 10000}, want: SkippedLimitExceeded, mappingLen: 2},
+		{name: "material limit", request: engineRequestWithCandidateCount(2), limits: Limits{ContextRadius: 0, MaximumCandidates: 2, MaximumMaterialBytes: 1}, want: SkippedLimitExceeded, mappingLen: 2},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			client := &recordingReconciliationClient{}
+			result, err := newTestEngine(t, client, test.limits).Reconcile(context.Background(), test.request)
+			if err != nil {
+				t.Fatalf("Reconcile() error = %v, want nil", err)
+			}
+			if result.Disposition() != test.want || len(result.CandidateMappings()) != test.mappingLen {
+				t.Fatalf("result disposition = %v mappings = %#v", result.Disposition(), result.CandidateMappings())
+			}
+			if len(client.requests) != 0 {
+				t.Fatalf("completion calls = %d, want zero", len(client.requests))
+			}
+		})
+	}
+}
+
+func TestEngineRejectsInvalidInvocationAndHonorsCancellation(t *testing.T) {
+	request := readyEngineRequest()
+	client := &recordingReconciliationClient{}
+	engine := newTestEngine(t, client, DefaultLimits())
+
+	var nilEngine *Engine
+	if _, err := nilEngine.Reconcile(context.Background(), request); err == nil || !strings.Contains(err.Error(), "engine must not be nil") {
+		t.Fatalf("nil engine error = %v", err)
+	}
+	if _, err := (&Engine{}).Reconcile(context.Background(), request); err == nil || !strings.Contains(err.Error(), "client") {
+		t.Fatalf("zero engine error = %v", err)
+	}
+	invalid := newEngine(&recordingReconciliationClient{}, testPromptSpec("a"), llm.ResponseSchema{}, DefaultLimits())
+	if _, err := invalid.Reconcile(context.Background(), request); err == nil || !strings.Contains(err.Error(), "invalid construction state") {
+		t.Fatalf("invalid construction error = %v", err)
+	}
+	if _, err := engine.Reconcile(nil, request); err == nil || !strings.Contains(err.Error(), "context") {
+		t.Fatalf("nil context error = %v", err)
+	}
+	withoutStage := request
+	withoutStage.StageName = " "
+	if _, err := engine.Reconcile(context.Background(), withoutStage); err == nil || !strings.Contains(err.Error(), "stage name") {
+		t.Fatalf("empty stage error = %v", err)
+	}
+	withoutSource := request
+	withoutSource.Source = nil
+	if _, err := engine.Reconcile(context.Background(), withoutSource); err == nil || !strings.Contains(err.Error(), "source document") {
+		t.Fatalf("nil source error = %v", err)
+	}
+
+	canceled, cancel := context.WithCancel(context.Background())
+	cancel()
+	if _, err := engine.Reconcile(canceled, request); !errors.Is(err, context.Canceled) || !strings.Contains(err.Error(), "before preparation") {
+		t.Fatalf("preparation cancellation error = %v", err)
+	}
+	if _, err := engine.Reconcile(&cancelBeforeCompletionContext{}, request); !errors.Is(err, context.Canceled) || !strings.Contains(err.Error(), "before completion") {
+		t.Fatalf("completion cancellation error = %v", err)
+	}
+	if len(client.requests) != 0 {
+		t.Fatalf("completion calls = %d, want zero for invalid and canceled invocations", len(client.requests))
+	}
+}
+
+func TestEngineCallsAreIndependentAndResultsAreOwned(t *testing.T) {
+	client := &recordingReconciliationClient{responses: []ProposalResponse{
+		{DuplicateGroups: []DuplicateGroup{
+			{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 1},
+			{CandidateIDs: []int{2, 99}, CanonicalCandidateID: 2},
+		}},
+		{DuplicateGroups: []DuplicateGroup{}},
+	}}
+	engine := newTestEngine(t, client, DefaultLimits())
+	first, err := engine.Reconcile(context.Background(), readyEngineRequest())
+	if err != nil {
+		t.Fatal(err)
+	}
+	first.Plan().Groups()[0].memberPositions[0] = 99
+	firstIssues := first.Issues()
+	firstIssues[0].Category = "changed"
+	firstMappings := first.CandidateMappings()
+	firstMappings[0].CandidatePosition = 99
+	if first.Plan().Groups()[0].MemberPositions()[0] != 0 || first.Issues()[0].Category == "changed" || first.CandidateMappings()[0].CandidatePosition != 0 {
+		t.Fatal("result accessors exposed retained state")
+	}
+
+	second, err := engine.Reconcile(context.Background(), readyEngineRequest())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if second.Disposition() != Complete || len(second.Plan().Groups()) != 0 || len(second.Issues()) != 0 || second.DiscardedGroupCount() != 0 || len(second.CandidateMappings()) != 2 {
+		t.Fatalf("second result retained prior call state: disposition %v plan %#v issues %#v discarded %d mappings %#v", second.Disposition(), second.Plan().Groups(), second.Issues(), second.DiscardedGroupCount(), second.CandidateMappings())
+	}
+}
+
+type recordingReconciliationClient struct {
+	requests  []contracts.StructuredCompletionRequest
+	responses []ProposalResponse
+	errors    []error
+}
+
+func (client *recordingReconciliationClient) CompleteStructured(_ context.Context, request contracts.StructuredCompletionRequest, output any) (contracts.StructuredCompletionResponse, error) {
+	request.Inputs = request.Inputs.Clone()
+	client.requests = append(client.requests, request)
+	index := len(client.requests) - 1
+	if index < len(client.errors) && client.errors[index] != nil {
+		return contracts.StructuredCompletionResponse{}, client.errors[index]
+	}
+	response := ProposalResponse{DuplicateGroups: []DuplicateGroup{}}
+	if index < len(client.responses) {
+		response = cloneProposalResponse(client.responses[index])
+	}
+	target, ok := output.(*ProposalResponse)
+	if !ok {
+		return contracts.StructuredCompletionResponse{}, fmt.Errorf("output type = %T", output)
+	}
+	*target = response
+	return contracts.StructuredCompletionResponse{}, nil
+}
+
+func cloneProposalResponse(response ProposalResponse) ProposalResponse {
+	cloned := ProposalResponse{DuplicateGroups: make([]DuplicateGroup, len(response.DuplicateGroups))}
+	for index, group := range response.DuplicateGroups {
+		cloned.DuplicateGroups[index] = DuplicateGroup{
+			CandidateIDs: append([]int(nil), group.CandidateIDs...), CanonicalCandidateID: group.CanonicalCandidateID,
+		}
+	}
+	return cloned
+}
+
+func newTestEngine(t *testing.T, client contracts.StructuredLLMClient, limits Limits) *Engine {
+	t.Helper()
+	engine, err := NewEngine(client, testPromptSpec("a"), limits)
+	if err != nil {
+		t.Fatalf("NewEngine() error = %v", err)
+	}
+	return engine
+}
+
+func testPromptSpec(digestCharacter string) PromptSpec {
+	return PromptSpec{ID: "test.semantic_reconciliation", Version: "v1", SHA256: testDigest(digestCharacter)}
+}
+
+func testDigest(character string) string { return "sha256:" + strings.Repeat(character, 64) }
+
+func readyEngineRequest() Request { return engineRequestWithCandidateCount(2) }
+
+func engineRequestWithCandidateCount(count int) Request {
+	document := &source.SourceDocument{ID: "source", Units: []source.SourceUnit{
+		{ID: 1, Kind: "speech", Text: "Mira arrived."},
+		{ID: 2, Kind: "speech", Text: "The captain spoke."},
+	}}
+	candidates := make([]Candidate, count)
+	for index := range candidates {
+		unitID := index%len(document.Units) + 1
+		candidates[index] = Candidate{
+			Label:      fmt.Sprintf("candidate-%d", index+1),
+			SourceRefs: []source.SourceRef{{SourceID: document.ID, StartUnitID: unitID, EndUnitID: unitID}},
+		}
+	}
+	return Request{StageName: "test/normalize", Source: document, Candidates: candidates, ProfileID: "profile", SessionID: "session"}
+}
+
+type cancelBeforeCompletionContext struct{ calls int }
+
+func (ctx *cancelBeforeCompletionContext) Deadline() (time.Time, bool) { return time.Time{}, false }
+func (ctx *cancelBeforeCompletionContext) Done() <-chan struct{}       { return nil }
+func (ctx *cancelBeforeCompletionContext) Value(any) any               { return nil }
+func (ctx *cancelBeforeCompletionContext) Err() error {
+	ctx.calls++
+	if ctx.calls > 1 {
+		return context.Canceled
+	}
+	return nil
+}

internal/framework/semanticreconcile/identity.go

@@ -0,0 +1,101 @@
+package semanticreconcile
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"strconv"
+	"strings"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+)
+
+// Policy identifies the framework-owned reconciliation and assessment rules.
+const Policy = "semantic_reconciliation.v1"
+
+var _ contracts.ManifestMetadataProvider = (*Engine)(nil)
+var _ pipeline.CheckpointFingerprintProvider = (*Engine)(nil)
+
+// ManifestMetadata returns fresh, content-free identity for the complete core
+// reconciliation mechanism.
+func (engine *Engine) ManifestMetadata() map[string]any {
+	if engine == nil || engine.validate() != nil {
+		return nil
+	}
+	return map[string]any{
+		"prompt_id":                      engine.prompt.ID,
+		"prompt_version":                 engine.prompt.Version,
+		"prompt_sha256":                  engine.prompt.SHA256,
+		"response_schema_key":            string(engine.schema.Key),
+		"response_schema_id":             engine.schema.ID,
+		"response_schema_name":           engine.schema.Name,
+		"response_schema_version":        engine.schema.Version,
+		"response_schema_sha256":         engine.schema.SHA256,
+		"semantic_reconciliation_policy": Policy,
+		"semantic_reconciliation_limits": map[string]any{
+			"context_radius":         engine.limits.ContextRadius,
+			"maximum_candidates":     engine.limits.MaximumCandidates,
+			"maximum_material_bytes": engine.limits.MaximumMaterialBytes,
+		},
+	}
+}
+
+// CheckpointFingerprints returns fresh canonical identities for prompt,
+// schema, reconciliation policy, and the complete limit policy.
+func (engine *Engine) CheckpointFingerprints() []pipeline.CheckpointFingerprint {
+	if engine == nil || engine.validate() != nil {
+		return nil
+	}
+	return []pipeline.CheckpointFingerprint{
+		{Name: "prompt", Value: identityDigest(engine.prompt.ID, engine.prompt.Version, engine.prompt.SHA256)},
+		{Name: "response_schema", Value: identityDigest(string(engine.schema.Key), engine.schema.ID, engine.schema.Version, engine.schema.Name, engine.schema.SHA256)},
+		{Name: "semantic_reconciliation_policy", Value: Policy},
+		{Name: "semantic_reconciliation_limits", Value: limitPolicyDigest(engine.limits)},
+	}
+}
+
+func limitPolicyDigest(limits Limits) string {
+	return identityDigest(
+		strconv.Itoa(limits.ContextRadius),
+		strconv.Itoa(limits.MaximumCandidates),
+		strconv.Itoa(limits.MaximumMaterialBytes),
+	)
+}
+
+func identityDigest(parts ...string) string {
+	hash := sha256.New()
+	for _, part := range parts {
+		_, _ = hash.Write([]byte(strconv.Itoa(len(part))))
+		_, _ = hash.Write([]byte{':'})
+		_, _ = hash.Write([]byte(part))
+	}
+	return "sha256:" + hex.EncodeToString(hash.Sum(nil))
+}
+
+func validateResponseSchemaIdentity(schema llm.ResponseSchema) error {
+	if strings.TrimSpace(string(schema.Key)) == "" || strings.TrimSpace(schema.ID) == "" || strings.TrimSpace(schema.Version) == "" || strings.TrimSpace(schema.Name) == "" {
+		return fmt.Errorf("response schema identity must be complete")
+	}
+	if err := validateSHA256(schema.SHA256); err != nil {
+		return fmt.Errorf("response schema digest: %w", err)
+	}
+	return nil
+}
+
+func validateSHA256(value string) error {
+	const prefix = "sha256:"
+	if !strings.HasPrefix(value, prefix) {
+		return fmt.Errorf("must use sha256: prefix")
+	}
+	hexValue := strings.TrimPrefix(value, prefix)
+	if len(hexValue) != sha256.Size*2 || hexValue != strings.ToLower(hexValue) {
+		return fmt.Errorf("must contain 64 lowercase hexadecimal characters")
+	}
+	decoded, err := hex.DecodeString(hexValue)
+	if err != nil || len(decoded) != sha256.Size {
+		return fmt.Errorf("must contain 64 lowercase hexadecimal characters")
+	}
+	return nil
+}

internal/framework/semanticreconcile/identity_test.go

@@ -0,0 +1,93 @@
+package semanticreconcile
+
+import (
+	"testing"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+)
+
+func TestEngineMetadataAndFingerprintsCoverCoreIdentity(t *testing.T) {
+	base := newTestEngine(t, &recordingReconciliationClient{}, DefaultLimits())
+	metadata := base.ManifestMetadata()
+	for _, key := range []string{
+		"prompt_id", "prompt_version", "prompt_sha256",
+		"response_schema_key", "response_schema_id", "response_schema_name", "response_schema_version", "response_schema_sha256",
+		"semantic_reconciliation_policy", "semantic_reconciliation_limits",
+	} {
+		if metadata[key] == nil || metadata[key] == "" {
+			t.Fatalf("metadata[%q] = %#v, want populated core identity", key, metadata[key])
+		}
+	}
+	limits, ok := metadata["semantic_reconciliation_limits"].(map[string]any)
+	if !ok || len(limits) != 3 || limits["context_radius"] == nil || limits["maximum_candidates"] == nil || limits["maximum_material_bytes"] == nil {
+		t.Fatalf("limit metadata = %#v, want complete limits", metadata["semantic_reconciliation_limits"])
+	}
+	fingerprints := base.CheckpointFingerprints()
+	wantNames := []string{"prompt", "response_schema", "semantic_reconciliation_policy", "semantic_reconciliation_limits"}
+	if len(fingerprints) != len(wantNames) {
+		t.Fatalf("fingerprints = %#v, want required categories", fingerprints)
+	}
+	for index, want := range wantNames {
+		if fingerprints[index].Name != want || fingerprints[index].Value == "" {
+			t.Fatalf("fingerprint %d = %#v, want %q with value", index, fingerprints[index], want)
+		}
+	}
+
+	metadata["prompt_id"] = "changed"
+	limits["context_radius"] = -1
+	fingerprints[0].Name = "changed"
+	if got := base.ManifestMetadata(); got["prompt_id"] == "changed" || got["semantic_reconciliation_limits"].(map[string]any)["context_radius"] == -1 {
+		t.Fatalf("ManifestMetadata() exposed retained state: %#v", got)
+	}
+	if got := base.CheckpointFingerprints(); got[0].Name == "changed" {
+		t.Fatalf("CheckpointFingerprints() exposed retained state: %#v", got)
+	}
+}
+
+func TestCoreFingerprintsChangeWithBehavioralIdentity(t *testing.T) {
+	base := newTestEngine(t, &recordingReconciliationClient{}, DefaultLimits())
+	baseFingerprints := base.CheckpointFingerprints()
+
+	promptChanged, err := NewEngine(&recordingReconciliationClient{}, testPromptSpec("b"), DefaultLimits())
+	if err != nil {
+		t.Fatal(err)
+	}
+	assertOnlyFingerprintChanged(t, baseFingerprints, promptChanged.CheckpointFingerprints(), "prompt")
+
+	schema, err := LoadResponseSchema()
+	if err != nil {
+		t.Fatal(err)
+	}
+	schema.SHA256 = testDigest("b")
+	schemaChanged := newEngine(&recordingReconciliationClient{}, base.prompt, schema, DefaultLimits())
+	assertOnlyFingerprintChanged(t, baseFingerprints, schemaChanged.CheckpointFingerprints(), "response_schema")
+
+	limits := DefaultLimits()
+	limits.ContextRadius++
+	limitsChanged, err := NewEngine(&recordingReconciliationClient{}, base.prompt, limits)
+	if err != nil {
+		t.Fatal(err)
+	}
+	assertOnlyFingerprintChanged(t, baseFingerprints, limitsChanged.CheckpointFingerprints(), "semantic_reconciliation_limits")
+}
+
+func TestInvalidEngineIdentityHasNoMetadataOrFingerprints(t *testing.T) {
+	invalid := newEngine(&recordingReconciliationClient{}, testPromptSpec("a"), llm.ResponseSchema{}, DefaultLimits())
+	if invalid.ManifestMetadata() != nil || invalid.CheckpointFingerprints() != nil {
+		t.Fatalf("invalid engine exposed identity: metadata %#v fingerprints %#v", invalid.ManifestMetadata(), invalid.CheckpointFingerprints())
+	}
+}
+
+func assertOnlyFingerprintChanged(t *testing.T, before, after []pipeline.CheckpointFingerprint, changedName string) {
+	t.Helper()
+	if len(before) != len(after) {
+		t.Fatalf("fingerprint counts differ: %#v %#v", before, after)
+	}
+	for index := range before {
+		changed := before[index] != after[index]
+		if changed != (before[index].Name == changedName) {
+			t.Fatalf("fingerprint %q change = %t, want only %q changed\nbefore: %#v\nafter: %#v", before[index].Name, changed, changedName, before, after)
+		}
+	}
+}

internal/framework/semanticreconcile/preparation.go

@@ -0,0 +1,403 @@
+package semanticreconcile
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"sort"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+)
+
+const (
+	candidateInputName  = "candidates"
+	transcriptInputName = "transcript"
+	jsonMediaType       = "application/json"
+)
+
+var defaultLimits = Limits{
+	ContextRadius:        2,
+	MaximumCandidates:    128,
+	MaximumMaterialBytes: 262144,
+}
+
+// Candidate is contextual source-backed input supplied by a typed consumer.
+// Prepare does not retain or mutate Label or SourceRefs.
+type Candidate struct {
+	Label      string
+	SourceRefs []source.SourceRef
+}
+
+// Limits bounds source context and serialized model input.
+type Limits struct {
+	ContextRadius        int
+	MaximumCandidates    int
+	MaximumMaterialBytes int
+}
+
+// DefaultLimits returns the core-owned production limits.
+func DefaultLimits() Limits {
+	return defaultLimits
+}
+
+// Validate rejects limits that cannot safely bound preparation.
+func (limits Limits) Validate() error {
+	if limits.ContextRadius < 0 {
+		return fmt.Errorf("semantic reconciliation limits: context radius must not be negative")
+	}
+	if limits.MaximumCandidates <= 0 {
+		return fmt.Errorf("semantic reconciliation limits: maximum candidates must be positive")
+	}
+	if limits.MaximumMaterialBytes <= 0 {
+		return fmt.Errorf("semantic reconciliation limits: maximum bytes must be positive")
+	}
+	return nil
+}
+
+// Disposition describes whether prepared materials may be sent to a model.
+type Disposition uint8
+
+const (
+	// Ready indicates that the result contains complete bounded materials.
+	Ready Disposition = iota + 1
+	// InsufficientCandidates indicates that fewer than two candidates were
+	// eligible after source-reference validation.
+	InsufficientCandidates
+	// LimitExceeded indicates that a candidate or serialized-material bound was
+	// exceeded and no request should be split or sent.
+	LimitExceeded
+)
+
+// CandidateMapping relates one model-visible request-local ID to the
+// corresponding zero-based position in the caller's candidate slice.
+type CandidateMapping struct {
+	CandidateID       int
+	CandidatePosition int
+}
+
+// Preparation owns the visible candidate mapping and prompt materials.
+type Preparation struct {
+	disposition Disposition
+	mappings    []CandidateMapping
+	materials   contracts.LLMInputSet
+}
+
+// Disposition returns the preparation outcome.
+func (preparation Preparation) Disposition() Disposition {
+	return preparation.disposition
+}
+
+// CandidateMappings returns an owned copy in model-visible candidate order.
+func (preparation Preparation) CandidateMappings() []CandidateMapping {
+	return append([]CandidateMapping(nil), preparation.mappings...)
+}
+
+// Materials returns independently owned candidate and transcript materials.
+// It is empty unless Disposition returns Ready.
+func (preparation Preparation) Materials() contracts.LLMInputSet {
+	return preparation.materials.Clone()
+}
+
+type sourceRange struct {
+	StartUnitID int `json:"start_unit_id"`
+	EndUnitID   int `json:"end_unit_id"`
+}
+
+type visibleCandidate struct {
+	CandidateID int           `json:"candidate_id"`
+	Label       string        `json:"label"`
+	SourceRefs  []sourceRange `json:"source_refs"`
+}
+
+type candidateInput struct {
+	Candidates []visibleCandidate `json:"candidates"`
+}
+
+type transcriptInput struct {
+	Windows []transcriptWindow `json:"windows"`
+}
+
+type transcriptWindow struct {
+	Units []transcriptUnit `json:"units"`
+}
+
+type transcriptUnit struct {
+	ID       int            `json:"id"`
+	Kind     string         `json:"kind"`
+	Text     string         `json:"text"`
+	Metadata map[string]any `json:"metadata,omitempty"`
+	Cited    bool           `json:"cited"`
+}
+
+type sourceInterval struct {
+	start int
+	end   int
+}
+
+type preparedCandidate struct {
+	position   int
+	references []sourceRange
+	intervals  []sourceInterval
+}
+
+// Prepare validates candidates and constructs bounded, source-ordered model
+// inputs. Deterministic skip conditions are represented by the returned
+// disposition rather than an error.
+func Prepare(document *source.SourceDocument, candidates []Candidate, limits Limits) (Preparation, error) {
+	if err := limits.Validate(); err != nil {
+		return Preparation{}, err
+	}
+
+	documentIndex := source.NewDocumentIndex(document)
+	prepared := make([]preparedCandidate, 0, len(candidates))
+	for candidatePosition, candidate := range candidates {
+		references, intervals, valid := prepareReferences(documentIndex, candidate.SourceRefs)
+		if !valid {
+			continue
+		}
+		prepared = append(prepared, preparedCandidate{
+			position:   candidatePosition,
+			references: references,
+			intervals:  intervals,
+		})
+	}
+
+	result := Preparation{
+		disposition: InsufficientCandidates,
+		mappings:    make([]CandidateMapping, len(prepared)),
+	}
+	views := make([]visibleCandidate, len(prepared))
+	for index, candidate := range prepared {
+		candidateID := index + 1
+		result.mappings[index] = CandidateMapping{
+			CandidateID:       candidateID,
+			CandidatePosition: candidate.position,
+		}
+		views[index] = visibleCandidate{
+			CandidateID: candidateID,
+			Label:       candidates[candidate.position].Label,
+			SourceRefs:  cloneSourceRanges(candidate.references),
+		}
+	}
+	if len(prepared) < 2 {
+		return result, nil
+	}
+	if len(prepared) > limits.MaximumCandidates {
+		result.disposition = LimitExceeded
+		return result, nil
+	}
+
+	candidateContent, withinLimit, err := marshalCandidateInput(views, limits.MaximumMaterialBytes)
+	if err != nil {
+		return Preparation{}, fmt.Errorf("prepare semantic reconciliation: encode candidate material: %w", err)
+	}
+	if !withinLimit {
+		result.disposition = LimitExceeded
+		return result, nil
+	}
+
+	contextIntervals := make([]sourceInterval, 0)
+	citedIntervals := make([]sourceInterval, 0)
+	for _, candidate := range prepared {
+		for _, interval := range candidate.intervals {
+			citedIntervals = append(citedIntervals, interval)
+			contextIntervals = append(contextIntervals, sourceInterval{
+				start: max(0, interval.start-limits.ContextRadius),
+				end:   min(len(document.Units)-1, interval.end+limits.ContextRadius),
+			})
+		}
+	}
+	transcriptContent, withinLimit, err := marshalTranscriptInput(
+		document.Units,
+		coalesceIntervals(contextIntervals),
+		coalesceIntervals(citedIntervals),
+		limits.MaximumMaterialBytes-len(candidateContent),
+	)
+	if err != nil {
+		return Preparation{}, fmt.Errorf("prepare semantic reconciliation: build transcript material: invalid source metadata")
+	}
+	if !withinLimit {
+		result.disposition = LimitExceeded
+		return result, nil
+	}
+
+	result.disposition = Ready
+	result.materials = contracts.LLMInputSet{
+		candidateInputName:  newInputMaterial(candidateInputName, candidateContent),
+		transcriptInputName: newInputMaterial(transcriptInputName, transcriptContent),
+	}
+	return result, nil
+}
+
+func prepareReferences(index source.DocumentIndex, references []source.SourceRef) ([]sourceRange, []sourceInterval, bool) {
+	if len(references) == 0 {
+		return nil, nil, false
+	}
+	type referencedInterval struct {
+		reference sourceRange
+		interval  sourceInterval
+	}
+	prepared := make([]referencedInterval, 0, len(references))
+	for _, reference := range references {
+		if err := index.ValidateRef(reference); err != nil {
+			return nil, nil, false
+		}
+		start, _ := index.Position(reference.StartUnitID)
+		end, _ := index.Position(reference.EndUnitID)
+		prepared = append(prepared, referencedInterval{
+			reference: sourceRange{StartUnitID: reference.StartUnitID, EndUnitID: reference.EndUnitID},
+			interval:  sourceInterval{start: start, end: end},
+		})
+	}
+	sort.Slice(prepared, func(left, right int) bool {
+		if prepared[left].interval.start != prepared[right].interval.start {
+			return prepared[left].interval.start < prepared[right].interval.start
+		}
+		return prepared[left].interval.end < prepared[right].interval.end
+	})
+
+	canonicalReferences := make([]sourceRange, 0, len(prepared))
+	intervals := make([]sourceInterval, 0, len(prepared))
+	for _, item := range prepared {
+		if len(canonicalReferences) > 0 && canonicalReferences[len(canonicalReferences)-1] == item.reference {
+			continue
+		}
+		canonicalReferences = append(canonicalReferences, item.reference)
+		intervals = append(intervals, item.interval)
+	}
+	return canonicalReferences, intervals, true
+}
+
+func cloneSourceRanges(ranges []sourceRange) []sourceRange {
+	if len(ranges) == 0 {
+		return []sourceRange{}
+	}
+	return append([]sourceRange(nil), ranges...)
+}
+
+func coalesceIntervals(intervals []sourceInterval) []sourceInterval {
+	if len(intervals) == 0 {
+		return nil
+	}
+	ordered := append([]sourceInterval(nil), intervals...)
+	sort.Slice(ordered, func(left, right int) bool {
+		if ordered[left].start != ordered[right].start {
+			return ordered[left].start < ordered[right].start
+		}
+		return ordered[left].end < ordered[right].end
+	})
+
+	coalesced := make([]sourceInterval, 0, len(ordered))
+	for _, interval := range ordered {
+		if len(coalesced) == 0 || interval.start > coalesced[len(coalesced)-1].end+1 {
+			coalesced = append(coalesced, interval)
+			continue
+		}
+		if interval.end > coalesced[len(coalesced)-1].end {
+			coalesced[len(coalesced)-1].end = interval.end
+		}
+	}
+	return coalesced
+}
+
+func marshalCandidateInput(candidates []visibleCandidate, maximumBytes int) ([]byte, bool, error) {
+	content := make([]byte, 0, min(maximumBytes, 4096))
+	var withinLimit bool
+	content, withinLimit = appendWithinLimit(content, maximumBytes, []byte(`{"candidates":[`))
+	if !withinLimit {
+		return nil, false, nil
+	}
+	for index, candidate := range candidates {
+		encoded, err := json.Marshal(candidate)
+		if err != nil {
+			return nil, false, err
+		}
+		separator := []byte(nil)
+		if index > 0 {
+			separator = []byte(",")
+		}
+		content, withinLimit = appendWithinLimit(content, maximumBytes, separator, encoded)
+		if !withinLimit {
+			return nil, false, nil
+		}
+	}
+	content, withinLimit = appendWithinLimit(content, maximumBytes, []byte("]}"))
+	return content, withinLimit, nil
+}
+
+// marshalTranscriptInput retains at most maximumBytes while visiting source
+// units in order. It deliberately serializes one unit at a time so an oversized
+// request does not require a document-sized transcript copy before rejection.
+func marshalTranscriptInput(units []source.SourceUnit, contextIntervals, citedIntervals []sourceInterval, maximumBytes int) ([]byte, bool, error) {
+	content := make([]byte, 0, min(maximumBytes, 4096))
+	content, withinLimit := appendWithinLimit(content, maximumBytes, []byte(`{"windows":[`))
+	if !withinLimit {
+		return nil, false, nil
+	}
+
+	citedIndex := 0
+	for windowIndex, interval := range contextIntervals {
+		separator := []byte(nil)
+		if windowIndex > 0 {
+			separator = []byte(",")
+		}
+		content, withinLimit = appendWithinLimit(content, maximumBytes, separator, []byte(`{"units":[`))
+		if !withinLimit {
+			return nil, false, nil
+		}
+		for position := interval.start; position <= interval.end; position++ {
+			for citedIndex < len(citedIntervals) && citedIntervals[citedIndex].end < position {
+				citedIndex++
+			}
+			cited := citedIndex < len(citedIntervals) && citedIntervals[citedIndex].start <= position
+			unit := units[position]
+			metadata, err := source.CloneMetadata(unit.Metadata)
+			if err != nil {
+				return nil, false, err
+			}
+			encoded, err := json.Marshal(transcriptUnit{
+				ID: unit.ID, Kind: unit.Kind, Text: unit.Text, Metadata: metadata, Cited: cited,
+			})
+			if err != nil {
+				return nil, false, err
+			}
+			separator = nil
+			if position > interval.start {
+				separator = []byte(",")
+			}
+			content, withinLimit = appendWithinLimit(content, maximumBytes, separator, encoded)
+			if !withinLimit {
+				return nil, false, nil
+			}
+		}
+		content, withinLimit = appendWithinLimit(content, maximumBytes, []byte("]}"))
+		if !withinLimit {
+			return nil, false, nil
+		}
+	}
+	content, withinLimit = appendWithinLimit(content, maximumBytes, []byte("]}"))
+	return content, withinLimit, nil
+}
+
+func appendWithinLimit(content []byte, maximumBytes int, parts ...[]byte) ([]byte, bool) {
+	for _, part := range parts {
+		if len(content) > maximumBytes || len(part) > maximumBytes-len(content) {
+			return content, false
+		}
+		content = append(content, part...)
+	}
+	return content, true
+}
+
+func newInputMaterial(name string, content []byte) contracts.LLMInputMaterial {
+	digest := sha256.Sum256(content)
+	return contracts.NewLLMInputMaterial(
+		name,
+		jsonMediaType,
+		content,
+		"sha256:"+hex.EncodeToString(digest[:]),
+		"",
+	)
+}

internal/framework/semanticreconcile/preparation_test.go

@@ -0,0 +1,386 @@
+package semanticreconcile
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"math"
+	"reflect"
+	"strings"
+	"testing"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
+)
+
+func TestPrepareBuildsContiguousCandidatesAndOwnedSourceContext(t *testing.T) {
+	document := &source.SourceDocument{ID: "private-source-id", Units: []source.SourceUnit{
+		{ID: 40, Kind: "narration", Text: "zero"},
+		{ID: 10, Kind: "speech", Text: "one", Metadata: map[string]any{"speaker": map[string]any{"name": "Mira"}}},
+		{ID: 70, Kind: "speech", Text: "two"},
+		{ID: 20, Kind: "narration", Text: "three"},
+		{ID: 90, Kind: "speech", Text: "four"},
+	}}
+	references := []source.SourceRef{
+		{SourceID: document.ID, StartUnitID: 90, EndUnitID: 90},
+		{SourceID: document.ID, StartUnitID: 10, EndUnitID: 20},
+		{SourceID: document.ID, StartUnitID: 10, EndUnitID: 20},
+	}
+	candidates := []Candidate{
+		{Label: "The Tavern", SourceRefs: append([]source.SourceRef(nil), references...)},
+		{Label: "The Tavern", SourceRefs: append([]source.SourceRef(nil), references...)},
+		{Label: "Broken", SourceRefs: []source.SourceRef{{SourceID: document.ID, StartUnitID: 20, EndUnitID: 10}}},
+	}
+	before := cloneCandidates(candidates)
+
+	preparation, err := Prepare(document, candidates, Limits{
+		ContextRadius:        1,
+		MaximumCandidates:    len(candidates),
+		MaximumMaterialBytes: 10000,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if preparation.Disposition() != Ready {
+		t.Fatalf("Disposition() = %v, want Ready", preparation.Disposition())
+	}
+	if !reflect.DeepEqual(candidates, before) {
+		t.Fatalf("Prepare() mutated candidates: %#v", candidates)
+	}
+	if got, want := preparation.CandidateMappings(), []CandidateMapping{
+		{CandidateID: 1, CandidatePosition: 0},
+		{CandidateID: 2, CandidatePosition: 1},
+	}; !reflect.DeepEqual(got, want) {
+		t.Fatalf("CandidateMappings() = %#v, want %#v", got, want)
+	}
+
+	materials := preparation.Materials()
+	if len(materials) != 2 {
+		t.Fatalf("materials = %#v, want candidates and transcript", materials)
+	}
+	if _, ok := materials[candidateInputName]; !ok {
+		t.Fatal("candidate material is missing")
+	}
+	if _, ok := materials[transcriptInputName]; !ok {
+		t.Fatal("transcript material is missing")
+	}
+	for name, material := range materials {
+		if material.Name != name || material.MediaType != "application/json" || material.OriginURI != "" || material.SizeBytes != int64(len(material.Content)) {
+			t.Fatalf("material %q metadata = %#v", name, material)
+		}
+		digest := sha256.Sum256(material.Content)
+		if want := "sha256:" + hex.EncodeToString(digest[:]); material.Digest != want {
+			t.Fatalf("material %q digest = %q, want %q", name, material.Digest, want)
+		}
+	}
+
+	candidateContent := append([]byte(nil), materials[candidateInputName].Content...)
+	var candidatePayload candidateInput
+	if err := json.Unmarshal(candidateContent, &candidatePayload); err != nil {
+		t.Fatal(err)
+	}
+	wantCandidates := []visibleCandidate{
+		{CandidateID: 1, Label: "The Tavern", SourceRefs: []sourceRange{{StartUnitID: 10, EndUnitID: 20}, {StartUnitID: 90, EndUnitID: 90}}},
+		{CandidateID: 2, Label: "The Tavern", SourceRefs: []sourceRange{{StartUnitID: 10, EndUnitID: 20}, {StartUnitID: 90, EndUnitID: 90}}},
+	}
+	if !reflect.DeepEqual(candidatePayload.Candidates, wantCandidates) {
+		t.Fatalf("candidate payload = %#v, want %#v", candidatePayload.Candidates, wantCandidates)
+	}
+	var candidateObjects struct {
+		Candidates []map[string]json.RawMessage `json:"candidates"`
+	}
+	if err := json.Unmarshal(candidateContent, &candidateObjects); err != nil {
+		t.Fatal(err)
+	}
+	for _, candidate := range candidateObjects.Candidates {
+		if len(candidate) != 3 || candidate["candidate_id"] == nil || candidate["label"] == nil || candidate["source_refs"] == nil {
+			t.Fatalf("model-facing candidate fields = %#v", candidate)
+		}
+	}
+	combined := string(materials[candidateInputName].Content) + string(materials[transcriptInputName].Content)
+	for _, forbidden := range []string{document.ID, "application_entity_id", "private-entity-id"} {
+		if strings.Contains(combined, forbidden) {
+			t.Fatalf("model material leaked %q: %s", forbidden, combined)
+		}
+	}
+
+	var transcript transcriptInput
+	if err := json.Unmarshal(materials[transcriptInputName].Content, &transcript); err != nil {
+		t.Fatal(err)
+	}
+	if len(transcript.Windows) != 1 || len(transcript.Windows[0].Units) != len(document.Units) {
+		t.Fatalf("windows = %#v, want one coalesced source window", transcript.Windows)
+	}
+	for index, wantID := range []int{40, 10, 70, 20, 90} {
+		if transcript.Windows[0].Units[index].ID != wantID {
+			t.Fatalf("unit %d id = %d, want %d", index, transcript.Windows[0].Units[index].ID, wantID)
+		}
+	}
+	if transcript.Windows[0].Units[0].Cited {
+		t.Fatal("radius-only unit marked cited")
+	}
+	for index := 1; index < len(transcript.Windows[0].Units); index++ {
+		if !transcript.Windows[0].Units[index].Cited {
+			t.Fatalf("evidence unit %d was not marked cited", index)
+		}
+	}
+
+	candidates[0].SourceRefs[0].StartUnitID = 40
+	document.Units[1].Metadata["speaker"].(map[string]any)["name"] = "changed"
+	if got := preparation.Materials()[candidateInputName].Content; !reflect.DeepEqual(got, candidateContent) {
+		t.Fatalf("candidate material changed through caller input: %s", got)
+	}
+	var retained transcriptInput
+	if err := json.Unmarshal(preparation.Materials()[transcriptInputName].Content, &retained); err != nil {
+		t.Fatal(err)
+	}
+	if got := retained.Windows[0].Units[1].Metadata["speaker"].(map[string]any)["name"]; got != "Mira" {
+		t.Fatalf("retained metadata = %v, want Mira", got)
+	}
+
+	returnedMappings := preparation.CandidateMappings()
+	returnedMappings[0].CandidatePosition = 99
+	returnedMaterials := preparation.Materials()
+	candidateMaterial := returnedMaterials[candidateInputName]
+	candidateMaterial.Content[0] = '['
+	returnedMaterials[candidateInputName] = candidateMaterial
+	delete(returnedMaterials, transcriptInputName)
+	if preparation.CandidateMappings()[0].CandidatePosition != 0 || !json.Valid(preparation.Materials()[candidateInputName].Content) || len(preparation.Materials()) != 2 {
+		t.Fatal("preparation accessors exposed retained data")
+	}
+}
+
+func TestPrepareRedactsInvalidSourceMetadata(t *testing.T) {
+	const sensitiveKey = "sensitive-metadata-key"
+	document := &source.SourceDocument{ID: "private-source", Units: []source.SourceUnit{
+		{ID: 1, Text: "private transcript", Metadata: map[string]any{sensitiveKey: math.NaN()}},
+		{ID: 2, Text: "other private transcript"},
+	}}
+	candidates := []Candidate{
+		{Label: "Private One", SourceRefs: []source.SourceRef{{SourceID: document.ID, StartUnitID: 1, EndUnitID: 1}}},
+		{Label: "Private Two", SourceRefs: []source.SourceRef{{SourceID: document.ID, StartUnitID: 2, EndUnitID: 2}}},
+	}
+	_, err := Prepare(document, candidates, DefaultLimits())
+	if err == nil || !strings.Contains(err.Error(), "invalid source metadata") {
+		t.Fatalf("Prepare() error = %v, want redacted metadata failure", err)
+	}
+	for _, forbidden := range []string{sensitiveKey, document.ID, document.Units[0].Text, candidates[0].Label, "non-finite", "float64"} {
+		if strings.Contains(err.Error(), forbidden) {
+			t.Fatalf("Prepare() error leaked %q: %v", forbidden, err)
+		}
+	}
+}
+
+func TestPrepareFiltersUnsafeCandidatesAndCoalescesAdjacentWindows(t *testing.T) {
+	document := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{
+		{ID: 9}, {ID: 3}, {ID: 8}, {ID: 1}, {ID: 7},
+	}}
+	candidates := []Candidate{
+		{Label: "One", SourceRefs: []source.SourceRef{{SourceID: document.ID, StartUnitID: 3, EndUnitID: 3}}},
+		{Label: "Two", SourceRefs: []source.SourceRef{{SourceID: document.ID, StartUnitID: 8, EndUnitID: 8}}},
+		{Label: "Missing", SourceRefs: []source.SourceRef{{SourceID: document.ID, StartUnitID: 99, EndUnitID: 99}}},
+		{Label: "Foreign", SourceRefs: []source.SourceRef{{SourceID: "other", StartUnitID: 1, EndUnitID: 1}}},
+		{Label: "No references"},
+		{Label: "Partly invalid", SourceRefs: []source.SourceRef{
+			{SourceID: document.ID, StartUnitID: 1, EndUnitID: 1},
+			{SourceID: document.ID, StartUnitID: 100, EndUnitID: 100},
+		}},
+	}
+	limits := Limits{ContextRadius: 0, MaximumCandidates: len(candidates), MaximumMaterialBytes: 10000}
+
+	preparation, err := Prepare(document, candidates, limits)
+	if err != nil || preparation.Disposition() != Ready {
+		t.Fatalf("Prepare() disposition = %v, error = %v", preparation.Disposition(), err)
+	}
+	if got, want := preparation.CandidateMappings(), []CandidateMapping{
+		{CandidateID: 1, CandidatePosition: 0},
+		{CandidateID: 2, CandidatePosition: 1},
+	}; !reflect.DeepEqual(got, want) {
+		t.Fatalf("CandidateMappings() = %#v, want %#v", got, want)
+	}
+	var transcript transcriptInput
+	if err := json.Unmarshal(preparation.Materials()[transcriptInputName].Content, &transcript); err != nil {
+		t.Fatal(err)
+	}
+	if len(transcript.Windows) != 1 || len(transcript.Windows[0].Units) != 2 || transcript.Windows[0].Units[0].ID != 3 || transcript.Windows[0].Units[1].ID != 8 {
+		t.Fatalf("windows = %#v, want adjacent source-order units coalesced", transcript.Windows)
+	}
+	oneCandidate, err := Prepare(document, candidates[:1], limits)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got, want := oneCandidate.CandidateMappings(), []CandidateMapping{{CandidateID: 1, CandidatePosition: 0}}; oneCandidate.Disposition() != InsufficientCandidates || !reflect.DeepEqual(got, want) || len(oneCandidate.Materials()) != 0 {
+		t.Fatalf("Prepare(one candidate) = disposition %v, mappings %#v, materials %#v", oneCandidate.Disposition(), got, oneCandidate.Materials())
+	}
+
+	nilPreparation, err := Prepare(nil, candidates, limits)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if nilPreparation.Disposition() != InsufficientCandidates || len(nilPreparation.CandidateMappings()) != 0 || len(nilPreparation.Materials()) != 0 {
+		t.Fatalf("Prepare(nil) = disposition %v, mappings %#v, materials %#v", nilPreparation.Disposition(), nilPreparation.CandidateMappings(), nilPreparation.Materials())
+	}
+}
+
+func TestPrepareValidatesLimitsBeforeBuildingMaterials(t *testing.T) {
+	if err := DefaultLimits().Validate(); err != nil {
+		t.Fatalf("DefaultLimits().Validate() error = %v", err)
+	}
+	cycle := map[string]any{}
+	cycle["self"] = cycle
+	document := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{
+		{ID: 1, Metadata: cycle}, {ID: 2},
+	}}
+	candidates := candidatesForEveryUnit(document)
+	tests := []struct {
+		name   string
+		limits Limits
+		want   string
+	}{
+		{name: "negative radius", limits: Limits{ContextRadius: -1, MaximumCandidates: 2, MaximumMaterialBytes: 100}, want: "radius"},
+		{name: "zero candidates", limits: Limits{ContextRadius: 0, MaximumCandidates: 0, MaximumMaterialBytes: 100}, want: "candidates"},
+		{name: "negative candidates", limits: Limits{ContextRadius: 0, MaximumCandidates: -1, MaximumMaterialBytes: 100}, want: "candidates"},
+		{name: "zero bytes", limits: Limits{ContextRadius: 0, MaximumCandidates: 2, MaximumMaterialBytes: 0}, want: "bytes"},
+		{name: "negative bytes", limits: Limits{ContextRadius: 0, MaximumCandidates: 2, MaximumMaterialBytes: -1}, want: "bytes"},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if _, err := Prepare(document, candidates, test.limits); err == nil || !strings.Contains(err.Error(), test.want) {
+				t.Fatalf("Prepare() error = %v, want %q validation", err, test.want)
+			}
+		})
+	}
+}
+
+func TestPrepareEnforcesCandidateLimitBeforeRenderingContext(t *testing.T) {
+	cycle := map[string]any{}
+	cycle["self"] = cycle
+	document := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{
+		{ID: 1, Text: "one", Metadata: cycle},
+		{ID: 2, Text: "two"},
+		{ID: 3, Text: "three"},
+	}}
+	candidates := candidatesForEveryUnit(document)
+	limits := Limits{ContextRadius: 0, MaximumCandidates: 2, MaximumMaterialBytes: 10000}
+
+	exceeded, err := Prepare(document, candidates, limits)
+	if err != nil {
+		t.Fatalf("Prepare(over limit) error = %v; context should not be rendered", err)
+	}
+	if exceeded.Disposition() != LimitExceeded || len(exceeded.CandidateMappings()) != 3 || len(exceeded.Materials()) != 0 {
+		t.Fatalf("Prepare(over limit) = disposition %v, mappings %#v, materials %#v", exceeded.Disposition(), exceeded.CandidateMappings(), exceeded.Materials())
+	}
+
+	document.Units[0].Metadata = nil
+	exact, err := Prepare(document, candidates[:2], limits)
+	if err != nil || exact.Disposition() != Ready {
+		t.Fatalf("Prepare(at limit) = disposition %v, error %v", exact.Disposition(), err)
+	}
+}
+
+func TestPrepareStopsRenderingContextWhenMaterialLimitIsExceeded(t *testing.T) {
+	cycle := map[string]any{}
+	cycle["self"] = cycle
+	document := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{
+		{ID: 1, Text: strings.Repeat("oversized", 100)},
+		{ID: 2, Text: "must not be inspected"},
+	}}
+	candidates := candidatesForEveryUnit(document)
+	base, err := Prepare(document, candidates, Limits{
+		ContextRadius:        0,
+		MaximumCandidates:    len(candidates),
+		MaximumMaterialBytes: 10000,
+	})
+	if err != nil || base.Disposition() != Ready {
+		t.Fatalf("Prepare(base) = disposition %v, error %v", base.Disposition(), err)
+	}
+	candidateBytes := len(base.Materials()[candidateInputName].Content)
+	document.Units[1].Metadata = cycle
+
+	limited, err := Prepare(document, candidates, Limits{
+		ContextRadius:        0,
+		MaximumCandidates:    len(candidates),
+		MaximumMaterialBytes: candidateBytes + 64,
+	})
+	if err != nil {
+		t.Fatalf("Prepare(limited) error = %v; rendering should stop at the material bound", err)
+	}
+	if limited.Disposition() != LimitExceeded || len(limited.Materials()) != 0 {
+		t.Fatalf("Prepare(limited) = disposition %v, materials %#v, want bounded skip", limited.Disposition(), limited.Materials())
+	}
+}
+
+func TestPrepareAcceptsExactCombinedByteLimitAndSkipsOneOver(t *testing.T) {
+	document := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{
+		{ID: 1, Text: "one"},
+		{ID: 2, Text: "two"},
+	}}
+	candidates := candidatesForEveryUnit(document)
+	baseLimits := Limits{ContextRadius: 0, MaximumCandidates: len(candidates), MaximumMaterialBytes: 10000}
+	base, err := Prepare(document, candidates, baseLimits)
+	if err != nil || base.Disposition() != Ready {
+		t.Fatalf("Prepare(base) = disposition %v, error %v", base.Disposition(), err)
+	}
+	materials := base.Materials()
+	totalBytes := len(materials[candidateInputName].Content) + len(materials[transcriptInputName].Content)
+
+	exactLimits := baseLimits
+	exactLimits.MaximumMaterialBytes = totalBytes
+	exact, err := Prepare(document, candidates, exactLimits)
+	if err != nil || exact.Disposition() != Ready {
+		t.Fatalf("Prepare(exact bytes) = disposition %v, error %v", exact.Disposition(), err)
+	}
+	oneOverLimits := exactLimits
+	oneOverLimits.MaximumMaterialBytes--
+	oneOver, err := Prepare(document, candidates, oneOverLimits)
+	if err != nil || oneOver.Disposition() != LimitExceeded || len(oneOver.Materials()) != 0 {
+		t.Fatalf("Prepare(one over) = disposition %v, materials %#v, error %v", oneOver.Disposition(), oneOver.Materials(), err)
+	}
+}
+
+func TestPrepareSerializationIsDeterministic(t *testing.T) {
+	document := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{
+		{ID: 5, Text: "five", Metadata: map[string]any{"z": 1, "a": []any{"first", "second"}}},
+		{ID: 2, Text: "two", Metadata: map[string]any{"nested": map[string]any{"b": true, "a": false}}},
+	}}
+	candidates := candidatesForEveryUnit(document)
+	limits := Limits{ContextRadius: 0, MaximumCandidates: len(candidates), MaximumMaterialBytes: 10000}
+
+	first, err := Prepare(document, candidates, limits)
+	if err != nil {
+		t.Fatal(err)
+	}
+	second, err := Prepare(document, cloneCandidates(candidates), limits)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, name := range []string{candidateInputName, transcriptInputName} {
+		firstMaterial := first.Materials()[name]
+		secondMaterial := second.Materials()[name]
+		if !reflect.DeepEqual(firstMaterial, secondMaterial) {
+			t.Fatalf("material %q is not deterministic:\n%#v\n%#v", name, firstMaterial, secondMaterial)
+		}
+	}
+}
+
+func candidatesForEveryUnit(document *source.SourceDocument) []Candidate {
+	candidates := make([]Candidate, len(document.Units))
+	for index, unit := range document.Units {
+		candidates[index] = Candidate{
+			Label: "candidate",
+			SourceRefs: []source.SourceRef{{
+				SourceID:    document.ID,
+				StartUnitID: unit.ID,
+				EndUnitID:   unit.ID,
+			}},
+		}
+	}
+	return candidates
+}
+
+func cloneCandidates(candidates []Candidate) []Candidate {
+	cloned := append([]Candidate(nil), candidates...)
+	for index := range cloned {
+		cloned[index].SourceRefs = append([]source.SourceRef(nil), candidates[index].SourceRefs...)
+	}
+	return cloned
+}

internal/framework/semanticreconcile/proposal.go

@@ -0,0 +1,236 @@
+package semanticreconcile
+
+import (
+	"fmt"
+	"sort"
+)
+
+// ProposalResponse is the complete private structured response contract.
+type ProposalResponse struct {
+	DuplicateGroups []DuplicateGroup `json:"duplicate_groups"`
+}
+
+// DuplicateGroup proposes supplied request-local candidate IDs that may denote
+// one entity and identifies one supplied member as canonical.
+type DuplicateGroup struct {
+	CandidateIDs         []int `json:"candidate_ids"`
+	CanonicalCandidateID int   `json:"canonical_candidate_id"`
+}
+
+// IssueCategory identifies one stable proposal safety failure.
+type IssueCategory string
+
+const (
+	IssueMemberNonPositive    IssueCategory = "member_non_positive"
+	IssueMemberUnknown        IssueCategory = "member_unknown"
+	IssueRepeatedMember       IssueCategory = "repeated_member"
+	IssueFewerThanTwoMembers  IssueCategory = "fewer_than_two_members"
+	IssueCanonicalNonPositive IssueCategory = "canonical_non_positive"
+	IssueCanonicalUnknown     IssueCategory = "canonical_unknown"
+	IssueCanonicalNotMember   IssueCategory = "canonical_not_member"
+	IssueOverlappingMember    IssueCategory = "overlapping_member"
+)
+
+// Issue identifies an unsafe proposal category at its original response group
+// index without prescribing caller warning text.
+type Issue struct {
+	GroupIndex int
+	Category   IssueCategory
+}
+
+// IssueDetails renders stable, domain-neutral proposal diagnostics for an
+// adapter's retry message.
+func IssueDetails(issues []Issue) []string {
+	details := make([]string, len(issues))
+	for index, issue := range issues {
+		details[index] = fmt.Sprintf("group %d: %s", issue.GroupIndex, issue.Category)
+	}
+	return details
+}
+
+// PlanGroup identifies one validated group using original candidate positions.
+type PlanGroup struct {
+	memberPositions   []int
+	canonicalPosition int
+}
+
+// MemberPositions returns an owned, ascending list of original candidate
+// positions.
+func (group PlanGroup) MemberPositions() []int {
+	return append([]int(nil), group.memberPositions...)
+}
+
+// CanonicalPosition returns the original position of the selected canonical
+// candidate.
+func (group PlanGroup) CanonicalPosition() int {
+	return group.canonicalPosition
+}
+
+// Plan contains deterministic, non-overlapping reconciliation groups.
+type Plan struct {
+	groups []PlanGroup
+}
+
+// Groups returns a deeply owned copy ordered by each group's earliest member.
+func (plan Plan) Groups() []PlanGroup {
+	groups := make([]PlanGroup, len(plan.groups))
+	for index, group := range plan.groups {
+		groups[index] = clonePlanGroup(group)
+	}
+	return groups
+}
+
+// Assessment contains the safe plan and stable diagnostics for discarded
+// response groups.
+type Assessment struct {
+	plan                Plan
+	discardedGroupCount int
+	issues              []Issue
+}
+
+// Plan returns an independently owned reconciliation plan.
+func (assessment Assessment) Plan() Plan {
+	groups := assessment.plan.Groups()
+	return Plan{groups: groups}
+}
+
+// Issues returns an owned copy ordered by original response group index.
+func (assessment Assessment) Issues() []Issue {
+	return append([]Issue(nil), assessment.issues...)
+}
+
+// DiscardedGroupCount returns the number of response groups excluded from the
+// safe plan.
+func (assessment Assessment) DiscardedGroupCount() int {
+	return assessment.discardedGroupCount
+}
+
+// RetryRequired reports whether any response group was discarded.
+func (assessment Assessment) RetryRequired() bool {
+	return assessment.discardedGroupCount > 0
+}
+
+type assessedGroup struct {
+	memberPositions   []int
+	canonicalPosition int
+	issues            []IssueCategory
+	locallyValid      bool
+	conflicting       bool
+}
+
+// Assess resolves request-local IDs through the retained preparation mapping
+// and returns only deterministic, non-overlapping groups.
+func (preparation Preparation) Assess(response ProposalResponse) Assessment {
+	positionsByID := make(map[int]int, len(preparation.mappings))
+	for _, mapping := range preparation.mappings {
+		positionsByID[mapping.CandidateID] = mapping.CandidatePosition
+	}
+
+	groups := make([]assessedGroup, len(response.DuplicateGroups))
+	owners := make(map[int][]int)
+	for groupIndex, proposal := range response.DuplicateGroups {
+		groups[groupIndex] = assessGroup(proposal, positionsByID)
+		if !groups[groupIndex].locallyValid {
+			continue
+		}
+		for _, position := range groups[groupIndex].memberPositions {
+			owners[position] = append(owners[position], groupIndex)
+		}
+	}
+	for _, groupIndexes := range owners {
+		if len(groupIndexes) < 2 {
+			continue
+		}
+		for _, groupIndex := range groupIndexes {
+			groups[groupIndex].conflicting = true
+		}
+	}
+
+	assessment := Assessment{}
+	for groupIndex, group := range groups {
+		for _, category := range group.issues {
+			assessment.issues = append(assessment.issues, Issue{GroupIndex: groupIndex, Category: category})
+		}
+		if group.conflicting {
+			assessment.issues = append(assessment.issues, Issue{GroupIndex: groupIndex, Category: IssueOverlappingMember})
+		}
+		if !group.locallyValid || group.conflicting {
+			assessment.discardedGroupCount++
+			continue
+		}
+		assessment.plan.groups = append(assessment.plan.groups, PlanGroup{
+			memberPositions:   append([]int(nil), group.memberPositions...),
+			canonicalPosition: group.canonicalPosition,
+		})
+	}
+	sort.Slice(assessment.plan.groups, func(left, right int) bool {
+		return assessment.plan.groups[left].memberPositions[0] < assessment.plan.groups[right].memberPositions[0]
+	})
+	return assessment
+}
+
+func assessGroup(proposal DuplicateGroup, positionsByID map[int]int) assessedGroup {
+	group := assessedGroup{}
+	seenIDs := make(map[int]struct{}, len(proposal.CandidateIDs))
+	memberPositions := make(map[int]struct{}, len(proposal.CandidateIDs))
+	for _, candidateID := range proposal.CandidateIDs {
+		if _, repeated := seenIDs[candidateID]; repeated {
+			group.issues = append(group.issues, IssueRepeatedMember)
+			continue
+		}
+		seenIDs[candidateID] = struct{}{}
+		position, category := resolveMember(candidateID, positionsByID)
+		if category != "" {
+			group.issues = append(group.issues, category)
+			continue
+		}
+		memberPositions[position] = struct{}{}
+		group.memberPositions = append(group.memberPositions, position)
+	}
+	if len(memberPositions) < 2 {
+		group.issues = append(group.issues, IssueFewerThanTwoMembers)
+	}
+
+	canonicalPosition, canonicalCategory := resolveCanonical(proposal.CanonicalCandidateID, positionsByID)
+	if canonicalCategory != "" {
+		group.issues = append(group.issues, canonicalCategory)
+	} else {
+		group.canonicalPosition = canonicalPosition
+		if _, member := memberPositions[canonicalPosition]; !member {
+			group.issues = append(group.issues, IssueCanonicalNotMember)
+		}
+	}
+
+	sort.Ints(group.memberPositions)
+	group.locallyValid = len(group.issues) == 0
+	return group
+}
+
+func resolveMember(candidateID int, positionsByID map[int]int) (int, IssueCategory) {
+	if candidateID <= 0 {
+		return 0, IssueMemberNonPositive
+	}
+	position, exists := positionsByID[candidateID]
+	if !exists {
+		return 0, IssueMemberUnknown
+	}
+	return position, ""
+}
+
+func resolveCanonical(candidateID int, positionsByID map[int]int) (int, IssueCategory) {
+	if candidateID <= 0 {
+		return 0, IssueCanonicalNonPositive
+	}
+	position, exists := positionsByID[candidateID]
+	if !exists {
+		return 0, IssueCanonicalUnknown
+	}
+	return position, ""
+}
+
+func clonePlanGroup(group PlanGroup) PlanGroup {
+	return PlanGroup{
+		memberPositions:   append([]int(nil), group.memberPositions...),
+		canonicalPosition: group.canonicalPosition,
+	}
+}

internal/framework/semanticreconcile/proposal_test.go

@@ -0,0 +1,199 @@
+package semanticreconcile
+
+import (
+	"reflect"
+	"testing"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
+)
+
+func TestAssessProducesAStableOriginalPositionPlan(t *testing.T) {
+	preparation := proposalPreparation(t)
+	response := ProposalResponse{DuplicateGroups: []DuplicateGroup{
+		{CandidateIDs: []int{5, 4}, CanonicalCandidateID: 5},
+		{CandidateIDs: []int{2, 1}, CanonicalCandidateID: 2},
+	}}
+	assessment := preparation.Assess(response)
+	want := []planGroupSnapshot{
+		{members: []int{0, 2}, canonical: 2},
+		{members: []int{5, 6}, canonical: 6},
+	}
+	if got := snapshotPlan(assessment.Plan()); !reflect.DeepEqual(got, want) {
+		t.Fatalf("plan = %#v, want %#v", got, want)
+	}
+	if assessment.DiscardedGroupCount() != 0 || assessment.RetryRequired() || len(assessment.Issues()) != 0 {
+		t.Fatalf("assessment diagnostics = discarded %d, retry %t, issues %#v", assessment.DiscardedGroupCount(), assessment.RetryRequired(), assessment.Issues())
+	}
+
+	reordered := preparation.Assess(ProposalResponse{DuplicateGroups: []DuplicateGroup{
+		{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 2},
+		{CandidateIDs: []int{4, 5}, CanonicalCandidateID: 5},
+	}})
+	if got := snapshotPlan(reordered.Plan()); !reflect.DeepEqual(got, want) {
+		t.Fatalf("reordered plan = %#v, want %#v", got, want)
+	}
+
+	empty := preparation.Assess(ProposalResponse{})
+	if len(empty.Plan().Groups()) != 0 || len(empty.Issues()) != 0 || empty.DiscardedGroupCount() != 0 || empty.RetryRequired() {
+		t.Fatalf("empty assessment = plan %#v, issues %#v, discarded %d, retry %t", empty.Plan().Groups(), empty.Issues(), empty.DiscardedGroupCount(), empty.RetryRequired())
+	}
+}
+
+func TestIssueDetailsPreservesIssueOrder(t *testing.T) {
+	issues := []Issue{
+		{GroupIndex: 3, Category: IssueCanonicalUnknown},
+		{GroupIndex: 1, Category: IssueMemberUnknown},
+	}
+	want := []string{"group 3: canonical_unknown", "group 1: member_unknown"}
+	if got := IssueDetails(issues); !reflect.DeepEqual(got, want) {
+		t.Fatalf("IssueDetails() = %#v, want %#v", got, want)
+	}
+}
+
+func TestAssessRejectsEveryUnsafeLocalGroupShape(t *testing.T) {
+	preparation := proposalPreparation(t)
+	tests := []struct {
+		name     string
+		group    DuplicateGroup
+		category IssueCategory
+	}{
+		{name: "zero member", group: DuplicateGroup{CandidateIDs: []int{0, 2}, CanonicalCandidateID: 2}, category: IssueMemberNonPositive},
+		{name: "negative member", group: DuplicateGroup{CandidateIDs: []int{-1, 2}, CanonicalCandidateID: 2}, category: IssueMemberNonPositive},
+		{name: "unknown member", group: DuplicateGroup{CandidateIDs: []int{99, 2}, CanonicalCandidateID: 2}, category: IssueMemberUnknown},
+		{name: "repeated member", group: DuplicateGroup{CandidateIDs: []int{1, 1}, CanonicalCandidateID: 1}, category: IssueRepeatedMember},
+		{name: "too small", group: DuplicateGroup{CandidateIDs: []int{1}, CanonicalCandidateID: 1}, category: IssueFewerThanTwoMembers},
+		{name: "zero canonical", group: DuplicateGroup{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 0}, category: IssueCanonicalNonPositive},
+		{name: "negative canonical", group: DuplicateGroup{CandidateIDs: []int{1, 2}, CanonicalCandidateID: -1}, category: IssueCanonicalNonPositive},
+		{name: "unknown canonical", group: DuplicateGroup{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 99}, category: IssueCanonicalUnknown},
+		{name: "canonical not member", group: DuplicateGroup{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 3}, category: IssueCanonicalNotMember},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			assessment := preparation.Assess(ProposalResponse{DuplicateGroups: []DuplicateGroup{test.group}})
+			if len(assessment.Plan().Groups()) != 0 || assessment.DiscardedGroupCount() != 1 || !assessment.RetryRequired() {
+				t.Fatalf("assessment = plan %#v, discarded %d, retry %t", assessment.Plan().Groups(), assessment.DiscardedGroupCount(), assessment.RetryRequired())
+			}
+			if !hasIssue(assessment.Issues(), 0, test.category) {
+				t.Fatalf("issues = %#v, want category %q", assessment.Issues(), test.category)
+			}
+		})
+	}
+}
+
+func TestAssessDiscardsEveryOverlappingGroupAndRetainsIndependentGroups(t *testing.T) {
+	preparation := proposalPreparation(t)
+	assessment := preparation.Assess(ProposalResponse{DuplicateGroups: []DuplicateGroup{
+		{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 1},
+		{CandidateIDs: []int{2, 3}, CanonicalCandidateID: 2},
+		{CandidateIDs: []int{4, 5}, CanonicalCandidateID: 5},
+	}})
+	wantPlan := []planGroupSnapshot{{members: []int{5, 6}, canonical: 6}}
+	if got := snapshotPlan(assessment.Plan()); !reflect.DeepEqual(got, wantPlan) {
+		t.Fatalf("plan = %#v, want %#v", got, wantPlan)
+	}
+	if assessment.DiscardedGroupCount() != 2 || !assessment.RetryRequired() {
+		t.Fatalf("discarded = %d, retry = %t", assessment.DiscardedGroupCount(), assessment.RetryRequired())
+	}
+	issues := assessment.Issues()
+	if len(issues) != 2 || !hasIssue(issues, 0, IssueOverlappingMember) || !hasIssue(issues, 1, IssueOverlappingMember) {
+		t.Fatalf("issues = %#v, want both conflicting group indexes", issues)
+	}
+
+	invalidAndSafe := preparation.Assess(ProposalResponse{DuplicateGroups: []DuplicateGroup{
+		{CandidateIDs: []int{1, 99}, CanonicalCandidateID: 1},
+		{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 2},
+	}})
+	wantPlan = []planGroupSnapshot{{members: []int{0, 2}, canonical: 2}}
+	if got := snapshotPlan(invalidAndSafe.Plan()); !reflect.DeepEqual(got, wantPlan) {
+		t.Fatalf("plan with independent invalid group = %#v, want %#v", got, wantPlan)
+	}
+	if invalidAndSafe.DiscardedGroupCount() != 1 || !invalidAndSafe.RetryRequired() || !hasIssue(invalidAndSafe.Issues(), 0, IssueMemberUnknown) {
+		t.Fatalf("invalid-and-safe assessment = discarded %d, retry %t, issues %#v", invalidAndSafe.DiscardedGroupCount(), invalidAndSafe.RetryRequired(), invalidAndSafe.Issues())
+	}
+}
+
+func TestAssessmentAccessorsAndInputsDoNotShareRetainedState(t *testing.T) {
+	preparation := proposalPreparation(t)
+	response := ProposalResponse{DuplicateGroups: []DuplicateGroup{
+		{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 2},
+	}}
+	assessment := preparation.Assess(response)
+	want := snapshotPlan(assessment.Plan())
+
+	response.DuplicateGroups[0].CandidateIDs[0] = 99
+	response.DuplicateGroups[0].CanonicalCandidateID = 99
+	plan := assessment.Plan()
+	groups := plan.Groups()
+	members := groups[0].MemberPositions()
+	members[0] = 99
+	groups[0] = PlanGroup{}
+	if got := snapshotPlan(assessment.Plan()); !reflect.DeepEqual(got, want) {
+		t.Fatalf("assessment plan changed through returned or input data: %#v", got)
+	}
+
+	invalid := preparation.Assess(ProposalResponse{DuplicateGroups: []DuplicateGroup{{
+		CandidateIDs: []int{1, 99}, CanonicalCandidateID: 1,
+	}}})
+	issues := invalid.Issues()
+	issues[0].GroupIndex = 99
+	issues[0].Category = IssueOverlappingMember
+	if retained := invalid.Issues(); retained[0].GroupIndex == 99 || retained[0].Category == IssueOverlappingMember {
+		t.Fatalf("Issues() exposed retained state: %#v", retained)
+	}
+}
+
+type planGroupSnapshot struct {
+	members   []int
+	canonical int
+}
+
+func snapshotPlan(plan Plan) []planGroupSnapshot {
+	groups := plan.Groups()
+	snapshot := make([]planGroupSnapshot, len(groups))
+	for index, group := range groups {
+		snapshot[index] = planGroupSnapshot{
+			members:   group.MemberPositions(),
+			canonical: group.CanonicalPosition(),
+		}
+	}
+	return snapshot
+}
+
+func hasIssue(issues []Issue, groupIndex int, category IssueCategory) bool {
+	for _, issue := range issues {
+		if issue.GroupIndex == groupIndex && issue.Category == category {
+			return true
+		}
+	}
+	return false
+}
+
+func proposalPreparation(t *testing.T) Preparation {
+	t.Helper()
+	document := &source.SourceDocument{ID: "session", Units: make([]source.SourceUnit, 7)}
+	candidates := make([]Candidate, len(document.Units))
+	for position := range document.Units {
+		unitID := position + 1
+		document.Units[position] = source.SourceUnit{ID: unitID, Text: "unit"}
+		candidates[position] = Candidate{
+			Label: "candidate",
+			SourceRefs: []source.SourceRef{{
+				SourceID:    document.ID,
+				StartUnitID: unitID,
+				EndUnitID:   unitID,
+			}},
+		}
+	}
+	for _, position := range []int{1, 4} {
+		candidates[position].SourceRefs[0].SourceID = "other"
+	}
+	preparation, err := Prepare(document, candidates, Limits{
+		ContextRadius:        0,
+		MaximumCandidates:    len(candidates),
+		MaximumMaterialBytes: 10000,
+	})
+	if err != nil || preparation.Disposition() != Ready {
+		t.Fatalf("Prepare() disposition = %v, error = %v", preparation.Disposition(), err)
+	}
+	return preparation
+}

internal/framework/semanticreconcile/schema.go

@@ -0,0 +1,41 @@
+package semanticreconcile
+
+import (
+	"fmt"
+	"io/fs"
+
+	rootassets "gitea.maximumdirect.net/eric/notarius/assets"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
+)
+
+const (
+	ResponseSchemaKey  = llm.ResponseSchemaKey("semantic_reconciliation_llm")
+	ResponseSchemaID   = "notarius.generic.semantic_reconciliation.llm"
+	ResponseSchemaName = "notarius_semantic_reconciliation_llm_v1"
+	SchemaVersion      = "v1"
+	SchemaAssetPath    = "schemas/semantic_reconciliation_llm.v1.json"
+)
+
+func assetFS() (fs.FS, error) {
+	assets, err := fs.Sub(rootassets.FS(), "generic/normalize/deduplication")
+	if err != nil {
+		return nil, fmt.Errorf("scope semantic reconciliation assets: %w", err)
+	}
+	return assets, nil
+}
+
+// LoadResponseSchema returns the private request-local integer proposal
+// contract. It is separate from every durable artifact schema.
+func LoadResponseSchema() (llm.ResponseSchema, error) {
+	assets, err := assetFS()
+	if err != nil {
+		return llm.ResponseSchema{}, err
+	}
+	return llm.LoadResponseSchema(assets, llm.ResponseSchemaDefinition{
+		Key:       ResponseSchemaKey,
+		ID:        ResponseSchemaID,
+		Version:   SchemaVersion,
+		Name:      ResponseSchemaName,
+		AssetPath: SchemaAssetPath,
+	})
+}

internal/framework/semanticreconcile/schema_test.go

@@ -0,0 +1,107 @@
+package semanticreconcile
+
+import (
+	"bytes"
+	"encoding/json"
+	"reflect"
+	"strings"
+	"testing"
+
+	"github.com/santhosh-tekuri/jsonschema/v6"
+)
+
+func TestResponseSchemaMetadataAndOwnership(t *testing.T) {
+	schema, err := LoadResponseSchema()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if schema.Key != ResponseSchemaKey || schema.ID != ResponseSchemaID || schema.Version != SchemaVersion || schema.Name != ResponseSchemaName {
+		t.Fatalf("schema metadata = %#v", schema)
+	}
+	if !json.Valid(schema.JSONSchema) || !strings.HasPrefix(schema.SHA256, "sha256:") {
+		t.Fatalf("schema content metadata = %#v", schema)
+	}
+
+	first := append([]byte(nil), schema.JSONSchema...)
+	schema.JSONSchema[0] = '['
+	loadedAgain, err := LoadResponseSchema()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !bytes.Equal(loadedAgain.JSONSchema, first) || !json.Valid(loadedAgain.JSONSchema) {
+		t.Fatal("LoadResponseSchema() exposed shared schema content")
+	}
+}
+
+func TestResponseSchemaAcceptsOnlyTheIntegerProposalShape(t *testing.T) {
+	schema, err := LoadResponseSchema()
+	if err != nil {
+		t.Fatal(err)
+	}
+	tests := []struct {
+		name  string
+		value any
+		valid bool
+	}{
+		{name: "empty proposal", value: map[string]any{"duplicate_groups": []any{}}, valid: true},
+		{name: "valid group", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1, 2}, "canonical_candidate_id": 1}}}, valid: true},
+		{name: "semantic canonical mismatch", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1, 2}, "canonical_candidate_id": 3}}}, valid: true},
+		{name: "missing proposal", value: map[string]any{}, valid: false},
+		{name: "unknown top-level field", value: map[string]any{"duplicate_groups": []any{}, "extra": true}, valid: false},
+		{name: "missing members", value: map[string]any{"duplicate_groups": []any{map[string]any{"canonical_candidate_id": 1}}}, valid: false},
+		{name: "missing canonical", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1, 2}}}}, valid: false},
+		{name: "unknown group field", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1, 2}, "canonical_candidate_id": 1, "name": "replacement"}}}, valid: false},
+		{name: "too few members", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1}, "canonical_candidate_id": 1}}}, valid: false},
+		{name: "repeated members", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1, 1}, "canonical_candidate_id": 1}}}, valid: false},
+		{name: "zero member", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{0, 1}, "canonical_candidate_id": 1}}}, valid: false},
+		{name: "negative member", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{-1, 1}, "canonical_candidate_id": 1}}}, valid: false},
+		{name: "non-integer member", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1, 2.5}, "canonical_candidate_id": 1}}}, valid: false},
+		{name: "zero canonical", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1, 2}, "canonical_candidate_id": 0}}}, valid: false},
+		{name: "contextual selectors", value: map[string]any{"duplicate_groups": []any{map[string]any{"candidate_ids": []any{1, 2}, "canonical_candidate_id": 1, "source_refs": []any{}}}}, valid: false},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			content, err := json.Marshal(test.value)
+			if err != nil {
+				t.Fatal(err)
+			}
+			err = validateAgainstSchema(content, schema.JSONSchema)
+			if (err == nil) != test.valid {
+				t.Fatalf("schema validation error = %v, want valid=%t", err, test.valid)
+			}
+		})
+	}
+
+	content := []byte(`{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2}]}`)
+	if err := validateAgainstSchema(content, schema.JSONSchema); err != nil {
+		t.Fatal(err)
+	}
+	var response ProposalResponse
+	if err := json.Unmarshal(content, &response); err != nil {
+		t.Fatal(err)
+	}
+	want := ProposalResponse{DuplicateGroups: []DuplicateGroup{{CandidateIDs: []int{1, 2}, CanonicalCandidateID: 2}}}
+	if !reflect.DeepEqual(response, want) {
+		t.Fatalf("decoded response = %#v, want %#v", response, want)
+	}
+}
+
+func validateAgainstSchema(instanceContent, schemaContent []byte) error {
+	instance, err := jsonschema.UnmarshalJSON(bytes.NewReader(instanceContent))
+	if err != nil {
+		return err
+	}
+	document, err := jsonschema.UnmarshalJSON(bytes.NewReader(schemaContent))
+	if err != nil {
+		return err
+	}
+	compiler := jsonschema.NewCompiler()
+	if err := compiler.AddResource("schema.json", document); err != nil {
+		return err
+	}
+	compiled, err := compiler.Compile("schema.json")
+	if err != nil {
+		return err
+	}
+	return compiled.Validate(instance)
+}

internal/modules/dnd/extract/itemoccurrences/prompt_assets_test.go

@@ -48,13 +48,15 @@ func TestPromptAssetsPrepareItemOccurrencePrompt(t *testing.T) {
 		rendered[index] = message.Content
 	}
 	content := strings.Join(rendered, "\n")
-	for _, field := range []string{"start_unit_id", "end_unit_id", "source_id"} {
+	for _, field := range []string{"start_unit_id", "end_unit_id"} {
 		if !strings.Contains(content, field) {
 			t.Fatalf("prepared prompt does not include shared evidence field %q", field)
 		}
 	}
-	if strings.Contains(content, "start_segment") || strings.Contains(content, "end_segment") {
-		t.Fatalf("prepared prompt contains obsolete segment evidence fields: %s", content)
+	for _, obsolete := range []string{"source_id", "start_segment", "end_segment"} {
+		if strings.Contains(content, obsolete) {
+			t.Fatalf("prepared prompt contains obsolete evidence field %q: %s", obsolete, content)
+		}
 	}
 }
 

internal/modules/dnd/normalize/itemregistry/normalizer.go

@@ -3,7 +3,6 @@ package itemregistry
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"reflect"
 	"sort"
@@ -13,19 +12,18 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/items/identity"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 )
 
 const (
 	Key                 = "dnd/item-registry"
 	PromptID            = "dnd.item_registry.normalize"
-	normalizationPolicy   = "dnd.item_registry.normalize.v2"
-	semanticContextPolicy = "dnd.entity_reconcile.context.v1"
-	semanticContextRadius = 2
+	PromptVersion       = "v1"
+	normalizationPolicy = "dnd.item_registry.normalize.v3"
 	NormalizationPolicy = normalizationPolicy
 
 	ReasonCodeItemFieldsNormalized                = "item_fields_normalized"
@@ -47,9 +45,7 @@ var _ pipeline.CheckpointFingerprintProvider = (*Normalizer)(nil)
 type Options struct{}
 
 type Normalizer struct {
-	llm               contracts.StructuredLLMClient
-	promptSHA         string
-	responseSchemaSHA string
+	engine *semanticreconcile.Engine
 }
 
 func New(llmClient contracts.StructuredLLMClient, _ Options) (*Normalizer, error) {
@@ -60,46 +56,45 @@ func New(llmClient contracts.StructuredLLMClient, _ Options) (*Normalizer, error
 	if err != nil {
 		return nil, normalizerErrorf("load prompt metadata: %w", err)
 	}
-	responseSchema, err := entityreconcile.LoadResponseSchema()
+	engine, err := semanticreconcile.NewEngine(llmClient, semanticreconcile.PromptSpec{
+		ID: PromptID, Version: PromptVersion, SHA256: promptSHA,
+	}, semanticreconcile.DefaultLimits())
 	if err != nil {
-		return nil, normalizerErrorf("load response schema: %w", err)
+		return nil, normalizerErrorf("construct semantic reconciliation engine: %w", err)
 	}
-	return &Normalizer{llm: llmClient, promptSHA: promptSHA, responseSchemaSHA: responseSchema.SHA256}, nil
+	return &Normalizer{engine: engine}, nil
 }
 
 func (n *Normalizer) Key() string                               { return Key }
 func (n *Normalizer) ReferenceSlots() []contracts.ReferenceSlot { return nil }
 
 func (n *Normalizer) ManifestMetadata() map[string]any {
-	if n == nil {
+	if n == nil || n.engine == nil {
 		return nil
 	}
-	return map[string]any{
-		"prompt_id": PromptID, "prompt_version": entityreconcile.SchemaVersion, "prompt_sha256": n.promptSHA,
-		"response_schema_key": string(entityreconcile.ResponseSchemaKey), "response_schema_id": entityreconcile.ResponseSchemaID,
-		"response_schema_name": entityreconcile.ResponseSchemaName, "response_schema_version": entityreconcile.SchemaVersion,
-		"response_schema_sha256": n.responseSchemaSHA, "identity_policy": identity.Policy,
-		"normalization_policy": normalizationPolicy, "semantic_context_policy": semanticContextPolicy, "semantic_context_radius": semanticContextRadius,
-	}
+	metadata := n.engine.ManifestMetadata()
+	metadata["identity_policy"] = identity.Policy
+	metadata["normalization_policy"] = normalizationPolicy
+	return metadata
 }
 
 func (n *Normalizer) CheckpointFingerprints() []pipeline.CheckpointFingerprint {
-	if n == nil {
+	if n == nil || n.engine == nil {
 		return nil
 	}
-	return []pipeline.CheckpointFingerprint{
-		{Name: "prompt", Value: n.promptSHA}, {Name: "response_schema", Value: n.responseSchemaSHA},
-		{Name: "identity_policy", Value: identity.Policy}, {Name: "normalization_policy", Value: normalizationPolicy},
-		{Name: "semantic_context_policy", Value: fmt.Sprintf("%s:%d", semanticContextPolicy, semanticContextRadius)},
-	}
+	fingerprints := n.engine.CheckpointFingerprints()
+	return append(fingerprints,
+		pipeline.CheckpointFingerprint{Name: "identity_policy", Value: identity.Policy},
+		pipeline.CheckpointFingerprint{Name: "normalization_policy", Value: normalizationPolicy},
+	)
 }
 
 func (n *Normalizer) Normalize(ctx context.Context, req contracts.TypedNormalizeRequest[dnd.ItemRegistry]) (contracts.TypedNormalizeResult[dnd.ItemRegistry], error) {
 	if n == nil {
 		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("normalizer must not be nil")
 	}
-	if n.llm == nil {
-		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("LLM client must not be nil")
+	if n.engine == nil {
+		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("semantic reconciliation engine must not be nil")
 	}
 	if ctx == nil {
 		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("context must not be nil")
@@ -107,39 +102,51 @@ func (n *Normalizer) Normalize(ctx context.Context, req contracts.TypedNormalize
 	if err := ctx.Err(); err != nil {
 		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("context error before normalize: %w", err)
 	}
+	if req.Source == nil {
+		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("source document must not be nil")
+	}
 
 	order := shared.NewSourceRefOrder(req.Source)
 	records, warnings := preprocessRecords(req.MergeOutput.Value, order)
 	deterministic := recordList(records)
-	materials, ready, err := entityreconcile.BuildContext(req.Source, reconciliationCandidates(records), semanticContextRadius)
-	if err != nil {
-		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("build semantic context: %w", err)
-	}
-	if !ready {
+	if len(records) < 2 {
 		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{Value: deterministic, Warnings: limitWarnings(warnings)}, nil
 	}
 
-	var response entityreconcile.ProposalResponse
-	if _, err := n.llm.CompleteStructured(ctx, contracts.StructuredCompletionRequest{
-		StageName: Key, PromptID: PromptID, PromptVersion: entityreconcile.SchemaVersion,
+	candidates, envelopes, err := reconciliationInputs(records)
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("prepare semantic reconciliation inputs: %w", err)
+	}
+	reconciliation, err := n.engine.Reconcile(ctx, semanticreconcile.Request{
+		StageName: Key, Source: req.Source, Candidates: candidates,
 		ProfileID: req.LLMProfile, SessionID: req.SessionID,
-		Inputs: contracts.LLMInputSet{"candidates": materials.Candidates, "transcript": materials.Transcript},
-	}, &response); err != nil {
-		if errors.Is(err, contracts.ErrInvalidStructuredOutput) {
+	})
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("reconcile semantic duplicates: %w", err)
+	}
+
+	switch reconciliation.Disposition() {
+	case semanticreconcile.SkippedInsufficientCandidates:
+		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{Value: deterministic, Warnings: limitWarnings(warnings)}, nil
+	case semanticreconcile.SkippedLimitExceeded:
+		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{Value: deterministic, Warnings: limitWarningsWithSemanticFallback(warnings)}, nil
+	case semanticreconcile.RetryableInvalidStructuredOutput:
 		return n.invalidStructuredResult(deterministic, warnings), nil
+	case semanticreconcile.Complete, semanticreconcile.RetryableDiscardedProposalGroups:
+	default:
+		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("unknown semantic reconciliation disposition %d", reconciliation.Disposition())
 	}
-		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("complete structured output: %w", err)
+
+	applied, semanticWarnings, rejectedGroups, err := applyReconciliationPlan(reconciliation.Plan(), records, envelopes, order)
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{}, normalizerErrorf("apply semantic reconciliation plan: %w", err)
 	}
-	assessment := materials.Assess(response)
-	applied, semanticWarnings, rejectedGroups := applySafeGroups(records, reconciliationGroups(assessment, materials.CandidateKeys()), order)
 	warnings = append(warnings, semanticWarnings...)
-	if rejectedGroups > 0 {
-		return currencyRetryResult(recordList(applied), warnings, rejectedGroups), nil
-	}
-	if assessment.DiscardedGroups() == 0 {
+	discardedGroups := reconciliation.DiscardedGroupCount() + rejectedGroups
+	if discardedGroups == 0 {
 		return contracts.TypedNormalizeResult[dnd.ItemRegistry]{Value: recordList(applied), Warnings: limitWarnings(warnings)}, nil
 	}
-	return retryResult(recordList(applied), warnings, assessment), nil
+	return retryResult(recordList(applied), warnings, reconciliation, rejectedGroups), nil
 }
 
 func (n *Normalizer) invalidStructuredResult(value dnd.ItemRegistry, warnings []contracts.Warning) contracts.TypedNormalizeResult[dnd.ItemRegistry] {
@@ -149,17 +156,15 @@ func (n *Normalizer) invalidStructuredResult(value dnd.ItemRegistry, warnings []
 	}}
 }
 
-func retryResult(value dnd.ItemRegistry, warnings []contracts.Warning, assessment entityreconcile.Assessment) contracts.TypedNormalizeResult[dnd.ItemRegistry] {
+func retryResult(value dnd.ItemRegistry, warnings []contracts.Warning, reconciliation semanticreconcile.Result, rejectedGroups int) contracts.TypedNormalizeResult[dnd.ItemRegistry] {
+	details := semanticreconcile.IssueDetails(reconciliation.Issues())
+	if rejectedGroups > 0 {
+		details = append(details, "currency may only be consolidated with aliases of one denomination")
+	}
+	discardedGroups := reconciliation.DiscardedGroupCount() + rejectedGroups
 	return contracts.TypedNormalizeResult[dnd.ItemRegistry]{Value: value, Warnings: limitWarningsForRetry(warnings), Retry: &contracts.NormalizeRetry{
-		ReasonCode: ReasonCodeItemSemanticProposalInvalid, Message: diagnostics.Aggregate("semantic proposal requires retry", reconciliationIssues(assessment)),
-		FallbackWarnings: []contracts.Warning{semanticFallbackWarning(assessment.DiscardedGroups())},
-	}}
-}
-
-func currencyRetryResult(value dnd.ItemRegistry, warnings []contracts.Warning, rejectedGroups int) contracts.TypedNormalizeResult[dnd.ItemRegistry] {
-	return contracts.TypedNormalizeResult[dnd.ItemRegistry]{Value: value, Warnings: limitWarningsForRetry(warnings), Retry: &contracts.NormalizeRetry{
-		ReasonCode: ReasonCodeItemSemanticProposalInvalid, Message: "semantic proposal requires retry: currency may only be consolidated with aliases of one denomination",
-		FallbackWarnings: []contracts.Warning{semanticFallbackWarning(rejectedGroups)},
+		ReasonCode: ReasonCodeItemSemanticProposalInvalid, Message: diagnostics.Aggregate("semantic proposal requires retry", details),
+		FallbackWarnings: []contracts.Warning{semanticFallbackWarning(discardedGroups)},
 	}}
 }
 
@@ -187,6 +192,10 @@ func limitWarningsForRetry(warnings []contracts.Warning) []contracts.Warning {
 	return append(bounded, contracts.Warning{Scope: "items", ReasonCode: ReasonCodeItemNormalizationWarningsOmitted, Message: fmt.Sprintf("%d additional warning(s) omitted", len(warnings)-displayed)})
 }
 
+func limitWarningsWithSemanticFallback(warnings []contracts.Warning) []contracts.Warning {
+	return append(limitWarningsForRetry(warnings), semanticFallbackWarning(-1))
+}
+
 type normalizedRecord struct {
 	item         dnd.Item
 	inputIndexes []int

internal/modules/dnd/normalize/itemregistry/normalizer_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"reflect"
 	"strconv"
 	"strings"
@@ -14,10 +15,10 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/items/identity"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 	identityvalidator "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/validate/itemregistry/identity"
 	"gitea.maximumdirect.net/eric/promptkit"
 )
@@ -35,9 +36,25 @@ func TestModuleContractAndMetadata(t *testing.T) {
 		t.Fatal("New() accepted nil client")
 	}
 	metadata := newNormalizer(t, &recordingNormalizerClient{}).ManifestMetadata()
-	if metadata["identity_policy"] != identity.Policy || metadata["response_schema_id"] != entityreconcile.ResponseSchemaID || metadata["normalization_policy"] != normalizationPolicy || metadata["semantic_context_radius"] != semanticContextRadius {
+	limits, ok := metadata["semantic_reconciliation_limits"].(map[string]any)
+	if !ok || metadata["identity_policy"] != identity.Policy || metadata["normalization_policy"] != normalizationPolicy || metadata["prompt_id"] != PromptID || metadata["prompt_version"] != PromptVersion || metadata["response_schema_key"] != string(semanticreconcile.ResponseSchemaKey) || metadata["response_schema_id"] != semanticreconcile.ResponseSchemaID || metadata["response_schema_name"] != semanticreconcile.ResponseSchemaName || metadata["semantic_reconciliation_policy"] != semanticreconcile.Policy || len(limits) != 3 {
 		t.Fatalf("metadata = %#v", metadata)
 	}
+	for _, name := range []string{"prompt", "response_schema", "semantic_reconciliation_policy", "semantic_reconciliation_limits", "identity_policy", "normalization_policy"} {
+		if !hasFingerprint(newNormalizer(t, &recordingNormalizerClient{}).CheckpointFingerprints(), name) {
+			t.Fatalf("fingerprints missing %q", name)
+		}
+	}
+}
+
+func TestNormalizeRejectsNilSourceDocument(t *testing.T) {
+	_, err := newNormalizer(t, &recordingNormalizerClient{}).Normalize(
+		context.Background(),
+		contracts.TypedNormalizeRequest[dnd.ItemRegistry]{},
+	)
+	if err == nil || !strings.Contains(err.Error(), "source document must not be nil") {
+		t.Fatalf("Normalize() error = %v, want nil source rejection", err)
+	}
 }
 
 func TestNormalizeConsolidatesEqualNamesAcrossEvidenceWithoutMutation(t *testing.T) {
@@ -73,10 +90,10 @@ func TestNormalizeConsolidatesEqualNamesAcrossEvidenceWithoutMutation(t *testing
 	}
 	var candidates struct {
 		Candidates []struct {
-			Name string `json:"name"`
+			Label string `json:"label"`
 		} `json:"candidates"`
 	}
-	if err := json.Unmarshal(client.requests[0].Inputs["candidates"].Content, &candidates); err != nil || len(candidates.Candidates) != 2 || candidates.Candidates[0].Name != "Rope" || candidates.Candidates[1].Name != "Lantern" {
+	if err := json.Unmarshal(client.requests[0].Inputs["candidates"].Content, &candidates); err != nil || len(candidates.Candidates) != 2 || candidates.Candidates[0].Label != "Rope" || candidates.Candidates[1].Label != "Lantern" {
 		t.Fatalf("semantic candidates = %#v, %v; want one candidate per comparison name", candidates, err)
 	}
 	repeated, repeatErr := newNormalizer(t, &recordingNormalizerClient{}).Normalize(context.Background(), normalizeRequestWithSource(result.Value, doc))
@@ -106,7 +123,7 @@ func TestNormalizeAppliesSafeAliasProposal(t *testing.T) {
 		{Name: "Compass of the Stars", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 20, EndUnitID: 20}}},
 		{Name: "Gold Pieces", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 30, EndUnitID: 30}}},
 	}}
-	client := &recordingNormalizerClient{response: `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"}]}`}
+	client := &recordingNormalizerClient{response: `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2}]}`}
 	result, err := newNormalizer(t, client).Normalize(context.Background(), normalizeRequestWithSource(input, doc))
 	if err != nil || result.Retry != nil || len(result.Value.Items) != 2 {
 		t.Fatalf("Normalize() = %#v, %v", result, err)
@@ -142,7 +159,7 @@ func TestNormalizeAppliesCurrencyReconciliationSafely(t *testing.T) {
 				{Name: "Gold Piece", SourceRefs: ref(20)},
 				{Name: "Gold Pieces", SourceRefs: ref(30)},
 			},
-			response:      `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002","candidate-000003"],"canonical":"candidate-000002"}]}`,
+			response:      `{"duplicate_groups":[{"candidate_ids":[1,2,3],"canonical_candidate_id":2}]}`,
 			wantNames:     []string{"Gold Piece"},
 			wantRefCounts: []int{3},
 			warning:       ReasonCodeDuplicateItemCollapsed,
@@ -153,7 +170,7 @@ func TestNormalizeAppliesCurrencyReconciliationSafely(t *testing.T) {
 				{Name: "Gold Pieces", SourceRefs: ref(10)},
 				{Name: "Silver Pieces", SourceRefs: ref(20)},
 			},
-			response:      `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000001"}]}`,
+			response:      `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":1}]}`,
 			wantNames:     []string{"Gold Pieces", "Silver Pieces"},
 			wantRefCounts: []int{1, 1},
 			wantRetry:     true,
@@ -165,7 +182,7 @@ func TestNormalizeAppliesCurrencyReconciliationSafely(t *testing.T) {
 				{Name: "Gold Pieces", SourceRefs: ref(10)},
 				{Name: "Longsword", SourceRefs: ref(20)},
 			},
-			response:      `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000001"}]}`,
+			response:      `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":1}]}`,
 			wantNames:     []string{"Gold Pieces", "Longsword"},
 			wantRefCounts: []int{1, 1},
 			wantRetry:     true,
@@ -177,7 +194,7 @@ func TestNormalizeAppliesCurrencyReconciliationSafely(t *testing.T) {
 				{Name: "Star Compass", SourceRefs: ref(10)},
 				{Name: "Compass of the Stars", SourceRefs: ref(20)},
 			},
-			response:      `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"}]}`,
+			response:      `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2}]}`,
 			wantNames:     []string{"Compass of the Stars"},
 			wantRefCounts: []int{2},
 			warning:       ReasonCodeDuplicateItemCollapsed,
@@ -188,7 +205,7 @@ func TestNormalizeAppliesCurrencyReconciliationSafely(t *testing.T) {
 				{Name: "Gold Pieces", SourceRefs: ref(10)},
 				{Name: "Longsword", SourceRefs: ref(20)},
 			},
-			response:      `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"}]}`,
+			response:      `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2}]}`,
 			wantNames:     []string{"Gold Pieces", "Longsword"},
 			wantRefCounts: []int{1, 1},
 			wantRetry:     true,
@@ -231,13 +248,67 @@ func TestNormalizePreservesCandidatesForUnsafeProposalGroups(t *testing.T) {
 		{Name: "Compass", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 20, EndUnitID: 20}}},
 		{Name: "Rope", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 30, EndUnitID: 30}}},
 	}}
-	client := &recordingNormalizerClient{response: `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000001"},{"members":["candidate-000002","candidate-000003"],"canonical":"candidate-000003"},{"members":["candidate-000001","candidate-000003"],"canonical":"candidate-000099"}]}`}
+	client := &recordingNormalizerClient{response: `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":1},{"candidate_ids":[2,3],"canonical_candidate_id":3},{"candidate_ids":[1,3],"canonical_candidate_id":99}]}`}
 	result, err := newNormalizer(t, client).Normalize(context.Background(), normalizeRequestWithSource(input, doc))
 	if err != nil || result.Retry == nil || len(result.Value.Items) != 3 || !strings.Contains(result.Retry.Message, "overlapping_member") || !strings.Contains(result.Retry.Message, "canonical_unknown") || strings.Contains(result.Retry.Message, "Star Compass") || len(result.Retry.Message) > 4096 {
 		t.Fatalf("Normalize() = %#v, %v; want deterministic retry fallback", result, err)
 	}
 }
 
+func TestNormalizeAppliesIndependentGroupAndCountsAllOmissions(t *testing.T) {
+	doc := semanticDocument()
+	ref := func(unitID int) []source.SourceRef {
+		return []source.SourceRef{{SourceID: doc.ID, StartUnitID: unitID, EndUnitID: unitID}}
+	}
+	input := dnd.ItemRegistry{Items: []dnd.Item{
+		{Name: "Star Compass", SourceRefs: ref(10)},
+		{Name: "Compass of the Stars", SourceRefs: ref(20)},
+		{Name: "Gold Pieces", SourceRefs: ref(30)},
+		{Name: "Silver Pieces", SourceRefs: ref(30)},
+		{Name: "Rope", SourceRefs: ref(10)},
+	}}
+	client := &recordingNormalizerClient{response: `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2},{"candidate_ids":[3,4],"canonical_candidate_id":3},{"candidate_ids":[5,99],"canonical_candidate_id":5}]}`}
+	result, err := newNormalizer(t, client).Normalize(context.Background(), normalizeRequestWithSource(input, doc))
+	if err != nil || result.Retry == nil {
+		t.Fatalf("Normalize() = %#v, %v; want retry with independently accepted output", result, err)
+	}
+	wantNames := []string{"Compass of the Stars", "Gold Pieces", "Silver Pieces", "Rope"}
+	if len(result.Value.Items) != len(wantNames) {
+		t.Fatalf("items = %#v, want %v", result.Value.Items, wantNames)
+	}
+	for index, name := range wantNames {
+		if result.Value.Items[index].Name != name {
+			t.Fatalf("item %d = %#v, want %q", index, result.Value.Items[index], name)
+		}
+	}
+	if !hasWarning(result.Warnings, ReasonCodeDuplicateItemCollapsed) || !hasWarning(result.Warnings, ReasonCodeItemSemanticProposalInvalid) {
+		t.Fatalf("warnings = %#v, want accepted and guarded-group diagnostics", result.Warnings)
+	}
+	if len(result.Retry.FallbackWarnings) != 1 || !strings.Contains(result.Retry.FallbackWarnings[0].Message, "2 proposal group(s)") {
+		t.Fatalf("retry = %#v, want one guarded and one malformed group counted", result.Retry)
+	}
+}
+
+func TestNormalizeLimitSkipDoesNotCallLLMAndAddsBoundedFallbackWarning(t *testing.T) {
+	client := &recordingNormalizerClient{}
+	doc := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{{ID: 1, Kind: "narration", Text: "A crowded storeroom"}}}
+	limit := semanticreconcile.DefaultLimits().MaximumCandidates
+	input := dnd.ItemRegistry{Items: make([]dnd.Item, limit+1)}
+	for index := range input.Items {
+		input.Items[index] = dnd.Item{Name: fmt.Sprintf("Item %d", index), SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 1, EndUnitID: 1}}}
+	}
+	result, err := newNormalizer(t, client).Normalize(context.Background(), normalizeRequestWithSource(input, doc))
+	if err != nil || result.Retry != nil {
+		t.Fatalf("Normalize() = %#v, %v; want deterministic limit fallback", result, err)
+	}
+	if len(client.requests) != 0 || len(result.Value.Items) != limit+1 {
+		t.Fatalf("completion calls = %d, items = %d; want no call and all records", len(client.requests), len(result.Value.Items))
+	}
+	if !hasWarning(result.Warnings, ReasonCodeItemSemanticReconciliationExhausted) || len(result.Warnings) > diagnostics.MaxWarnings {
+		t.Fatalf("warnings = %#v, want bounded reconciliation fallback", result.Warnings)
+	}
+}
+
 func TestNormalizeRetryFallbackErrorsWarningsAndIdempotence(t *testing.T) {
 	doc := semanticDocument()
 	input := dnd.ItemRegistry{Items: []dnd.Item{{Name: "Star Compass", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 10, EndUnitID: 10}}}, {Name: "Compass", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 20, EndUnitID: 20}}}}}
@@ -261,7 +332,7 @@ func TestNormalizeRetryFallbackErrorsWarningsAndIdempotence(t *testing.T) {
 
 func TestRegisterPromptAssetsPreparesItemNormalizationPrompt(t *testing.T) {
 	registry := llm.NewAssetRegistry()
-	if err := entityreconcile.RegisterSchemaAssets(registry); err != nil {
+	if err := semanticreconcile.RegisterAssets(registry); err != nil {
 		t.Fatal(err)
 	}
 	if err := RegisterPromptAssets(registry); err != nil {
@@ -276,13 +347,16 @@ func TestRegisterPromptAssetsPreparesItemNormalizationPrompt(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	prepared, err := engine.Prepare(context.Background(), promptkit.RunRequest{PromptID: PromptID, PromptVersion: entityreconcile.SchemaVersion, ProfileID: "item-normalize-test", Inputs: map[string]promptkit.ArtifactRef{"candidates": promptkit.Inline(`{"candidates":[{"name":"Rope","source_refs":[{"start_unit_id":1,"end_unit_id":1}]}]}`), "transcript": promptkit.Inline(`{"windows":[{"units":[]}]}`)}})
+	prepared, err := engine.Prepare(context.Background(), promptkit.RunRequest{PromptID: PromptID, PromptVersion: PromptVersion, ProfileID: "item-normalize-test", Inputs: map[string]promptkit.ArtifactRef{"candidates": promptkit.Inline(`{"candidates":[{"candidate_id":1,"label":"Rope","source_refs":[{"start_unit_id":1,"end_unit_id":1}]}]}`), "transcript": promptkit.Inline(`{"windows":[{"units":[]}]}`)}})
 	if err != nil {
 		t.Fatal(err)
 	}
-	if prepared.OutputContract.SchemaPath != "dnd_entity_reconcile_llm.v1.json" || !strings.Contains(prepared.Messages[1].Content, "currency denominations") || !strings.Contains(prepared.Messages[1].Content, "materially different item types") {
+	if prepared.OutputContract.SchemaPath != "semantic_reconciliation_llm.v1.json" || !strings.Contains(prepared.Messages[1].Content, "candidate_id") || !strings.Contains(prepared.Messages[1].Content, "integer") || !strings.Contains(prepared.Messages[2].Content, "currency denominations") || !strings.Contains(prepared.Messages[2].Content, "materially different item") || prepared.Messages[2].CacheControl == nil || prepared.Messages[2].CacheControl.Type != promptkit.CacheControlEphemeral {
 		t.Fatalf("prepared prompt = %#v", prepared)
 	}
+	if prepared.Messages[4].CacheControl == nil || prepared.Messages[4].CacheControl.Type != promptkit.CacheControlEphemeral || !strings.Contains(prepared.Messages[3].Content, `"Rope"`) || strings.Contains(prepared.Messages[3].Content, `"windows"`) || !strings.Contains(prepared.Messages[4].Content, `"windows"`) || strings.Contains(prepared.Messages[4].Content, `"Rope"`) {
+		t.Fatalf("prepared prompt = %#v, want isolated candidate and transcript presentation", prepared)
+	}
 }
 
 type recordingNormalizerClient struct {
@@ -300,53 +374,13 @@ func (c *recordingNormalizerClient) CompleteStructured(_ context.Context, reques
 	if response == "" {
 		response = `{"duplicate_groups":[]}`
 	}
-	content, err := contextualProposalResponse(response, request.Inputs["candidates"].Content)
-	if err != nil {
-		return contracts.StructuredCompletionResponse{}, err
-	}
+	content := []byte(response)
 	if err := json.Unmarshal(content, output); err != nil {
 		return contracts.StructuredCompletionResponse{}, err
 	}
 	return contracts.StructuredCompletionResponse{Content: content}, nil
 }
 
-func contextualProposalResponse(response string, candidateContent []byte) ([]byte, error) {
-	if !strings.Contains(response, "candidate-") {
-		return []byte(response), nil
-	}
-	var selection struct {
-		DuplicateGroups []struct {
-			Members   []string `json:"members"`
-			Canonical string   `json:"canonical"`
-		} `json:"duplicate_groups"`
-	}
-	if err := json.Unmarshal([]byte(response), &selection); err != nil {
-		return nil, err
-	}
-	var candidates struct {
-		Candidates []entityreconcile.Selector `json:"candidates"`
-	}
-	if err := json.Unmarshal(candidateContent, &candidates); err != nil {
-		return nil, err
-	}
-	selector := func(key string) entityreconcile.Selector {
-		index, err := strconv.Atoi(strings.TrimPrefix(key, "candidate-"))
-		if err != nil || index < 1 || index > len(candidates.Candidates) {
-			return entityreconcile.Selector{Name: key, SourceRefs: []entityreconcile.SourceRange{}}
-		}
-		return candidates.Candidates[index-1].Clone()
-	}
-	proposal := entityreconcile.ProposalResponse{DuplicateGroups: make([]entityreconcile.DuplicateGroup, len(selection.DuplicateGroups))}
-	for index, group := range selection.DuplicateGroups {
-		members := make([]entityreconcile.Selector, len(group.Members))
-		for memberIndex, key := range group.Members {
-			members[memberIndex] = selector(key)
-		}
-		proposal.DuplicateGroups[index] = entityreconcile.DuplicateGroup{Members: members, Canonical: selector(group.Canonical)}
-	}
-	return json.Marshal(proposal)
-}
-
 func newNormalizer(t *testing.T, client contracts.StructuredLLMClient) *Normalizer {
 	t.Helper()
 	normalizer, err := New(client, Options{})
@@ -356,7 +390,10 @@ func newNormalizer(t *testing.T, client contracts.StructuredLLMClient) *Normaliz
 	return normalizer
 }
 func normalizeRequest(value dnd.ItemRegistry) contracts.TypedNormalizeRequest[dnd.ItemRegistry] {
-	return contracts.TypedNormalizeRequest[dnd.ItemRegistry]{MergeOutput: contracts.MergeArtifact[dnd.ItemRegistry]{Value: value}}
+	return contracts.TypedNormalizeRequest[dnd.ItemRegistry]{
+		Source:      &source.SourceDocument{},
+		MergeOutput: contracts.MergeArtifact[dnd.ItemRegistry]{Value: value},
+	}
 }
 func normalizeRequestWithSource(value dnd.ItemRegistry, doc *source.SourceDocument) contracts.TypedNormalizeRequest[dnd.ItemRegistry] {
 	request := normalizeRequest(value)
@@ -374,3 +411,12 @@ func hasWarning(warnings []contracts.Warning, reason string) bool {
 	}
 	return false
 }
+
+func hasFingerprint(fingerprints []pipeline.CheckpointFingerprint, name string) bool {
+	for _, fingerprint := range fingerprints {
+		if fingerprint.Name == name && fingerprint.Value != "" {
+			return true
+		}
+	}
+	return false
+}

internal/modules/dnd/normalize/itemregistry/prompt_assets.go

@@ -8,19 +8,26 @@ import (
 	rootassets "gitea.maximumdirect.net/eric/notarius/assets"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/promptfs"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 )
 
 const promptAssetRoot = "assets/prompts"
 
-var promptAssetManifest = shared.PromptAssetManifest{
+func promptAssetManifest() (shared.PromptAssetManifest, error) {
+	sharedFiles, err := semanticreconcile.SharedPromptFiles()
+	if err != nil {
+		return shared.PromptAssetManifest{}, fmt.Errorf("load shared semantic reconciliation prompt assets: %w", err)
+	}
+	return shared.PromptAssetManifest{
 		ModuleDir: PromptID,
 		ModuleFiles: []promptfs.ModulePromptFile{
 			{Name: "prompt.yaml", Path: "prompts/prompt.yaml"},
 			{Name: "instructions.md", Path: "prompts/instructions.md"},
-		{Name: "candidates.md", Path: "prompts/candidates.md"},
 		},
-	SharedFiles: []string{"common-dnd-system.md", "common-dnd-entity-reconciliation.md", "common-dnd-transcript-windows.md"},
+		SharedFiles:         []string{"common-dnd-system.md"},
+		ExternalSharedFiles: sharedFiles,
+	}, nil
 }
 
 func moduleAssetFS() (fs.FS, error) {
@@ -36,7 +43,11 @@ func RegisterPromptAssets(registry *llm.AssetRegistry) error {
 	if err != nil {
 		return err
 	}
-	promptFS, err := promptAssetManifest.PromptFS(assets)
+	manifest, err := promptAssetManifest()
+	if err != nil {
+		return err
+	}
+	promptFS, err := manifest.PromptFS(assets)
 	if err != nil {
 		return fmt.Errorf("prepare item normalization prompt assets: %w", err)
 	}
@@ -50,7 +61,12 @@ func promptAssetMetadata() (string, error) {
 			promptAssetHashErr = err
 			return
 		}
-		promptAssetHash, promptAssetHashErr = promptAssetManifest.Hash(assets)
+		manifest, err := promptAssetManifest()
+		if err != nil {
+			promptAssetHashErr = err
+			return
+		}
+		promptAssetHash, promptAssetHashErr = manifest.Hash(assets)
 	})
 	return promptAssetHash, promptAssetHashErr
 }

internal/modules/dnd/normalize/itemregistry/reconciliation.go

@@ -2,104 +2,106 @@ package itemregistry
 
 import (
 	"fmt"
+	"sort"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
+	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/items/identity"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 )
 
-type safeReconciliationGroup struct {
-	members   []int
-	canonical int
-}
+const incompatibleCurrencyGroup semanticreconcile.RejectionCategory = "incompatible_currency"
 
-func reconciliationCandidates(records []normalizedRecord) []entityreconcile.Candidate {
-	candidates := make([]entityreconcile.Candidate, len(records))
+func reconciliationInputs(records []normalizedRecord) ([]semanticreconcile.Candidate, []semanticreconcile.Record[dnd.Item], error) {
+	candidates := make([]semanticreconcile.Candidate, len(records))
+	envelopes := make([]semanticreconcile.Record[dnd.Item], len(records))
 	for index, record := range records {
-		candidates[index] = entityreconcile.Candidate{Name: record.item.Name, SourceRefs: cloneSourceRefs(record.item.SourceRefs)}
+		candidates[index] = semanticreconcile.Candidate{
+			Label:      record.item.Name,
+			SourceRefs: cloneSourceRefs(record.item.SourceRefs),
 		}
-	return candidates
+		envelope, err := semanticreconcile.NewRecord(record.item, record.inputIndexes, record.earliest, cloneItem)
+		if err != nil {
+			return nil, nil, fmt.Errorf("record %d: %w", index, err)
+		}
+		envelopes[index] = envelope
+	}
+	return candidates, envelopes, nil
 }
 
-func reconciliationGroups(assessment entityreconcile.Assessment, candidateKeys []string) []safeReconciliationGroup {
-	positions := make(map[string]int, len(candidateKeys))
-	for index, key := range candidateKeys {
-		positions[key] = index
+func applyReconciliationPlan(plan semanticreconcile.Plan, records []normalizedRecord, envelopes []semanticreconcile.Record[dnd.Item], order shared.SourceRefOrder) ([]normalizedRecord, []contracts.Warning, int, error) {
+	application, err := semanticreconcile.ApplyPlan(plan, envelopes, semanticreconcile.ApplicationPolicy[dnd.Item]{
+		CloneValue: cloneItem,
+		RejectGroup: func(members []dnd.Item, _ dnd.Item) semanticreconcile.RejectionCategory {
+			if !canConsolidate(members) {
+				return incompatibleCurrencyGroup
 			}
-	safeGroups := assessment.SafeGroups()
-	groups := make([]safeReconciliationGroup, 0, len(safeGroups))
-	for _, group := range safeGroups {
-		members := group.Members()
-		memberPositions := make([]int, len(members))
-		valid := true
-		for index, key := range members {
-			position, ok := positions[key]
-			if !ok {
-				valid = false
-				break
+			return ""
+		},
+		ConsolidateGroup: func(members []dnd.Item, canonical dnd.Item) (dnd.Item, error) {
+			output := cloneItem(canonical)
+			output.SourceRefs = nil
+			for _, member := range members {
+				output.SourceRefs = append(output.SourceRefs, member.SourceRefs...)
 			}
-			memberPositions[index] = position
+			output.SourceRefs = order.Canonicalize(output.SourceRefs)
+			output.ID = identity.DeriveID(output.Name)
+			return output, nil
+		},
+	})
+	if err != nil {
+		return nil, nil, 0, err
 	}
-		canonical, ok := positions[group.Canonical()]
-		if valid && ok {
-			groups = append(groups, safeReconciliationGroup{members: memberPositions, canonical: canonical})
+
+	applied := application.Records()
+	output := make([]normalizedRecord, len(applied))
+	for index, record := range applied {
+		output[index] = normalizedRecord{
+			item:         record.Value(),
+			inputIndexes: record.OriginalInputIndexes(),
+			earliest:     record.EarliestInputPosition(),
 		}
 	}
-	return groups
+	type orderedWarning struct {
+		position int
+		warning  contracts.Warning
+	}
+	orderedWarnings := make([]orderedWarning, 0, len(application.AppliedGroups())+len(application.RejectedGroups()))
+	for _, event := range application.AppliedGroups() {
+		provenance := event.Provenance()
+		orderedWarnings = append(orderedWarnings, orderedWarning{
+			position: provenance.EarliestInputPosition(),
+			warning:  semanticDuplicateWarning(provenance, records[provenance.CanonicalPosition()]),
+		})
+	}
+	for _, event := range application.RejectedGroups() {
+		provenance := event.Provenance()
+		orderedWarnings = append(orderedWarnings, orderedWarning{
+			position: provenance.EarliestInputPosition(),
+			warning: contracts.Warning{
+				Scope:      itemScope(provenance.EarliestInputPosition()),
+				ReasonCode: ReasonCodeItemSemanticProposalInvalid,
+				Message:    "proposal group preserved because currency may only be consolidated with aliases of one denomination",
+			},
+		})
+	}
+	sort.SliceStable(orderedWarnings, func(left, right int) bool { return orderedWarnings[left].position < orderedWarnings[right].position })
+	warnings := make([]contracts.Warning, len(orderedWarnings))
+	for index, entry := range orderedWarnings {
+		warnings[index] = entry.warning
+	}
+	return output, warnings, len(application.RejectedGroups()), nil
 }
 
-func reconciliationIssues(assessment entityreconcile.Assessment) []string {
-	issues := assessment.Issues()
-	details := make([]string, len(issues))
-	for index, issue := range issues {
-		details[index] = fmt.Sprintf("group %d: %s", issue.GroupIndex, issue.Category)
-	}
-	return details
-}
-
-func applySafeGroups(records []normalizedRecord, groups []safeReconciliationGroup, order shared.SourceRefOrder) ([]normalizedRecord, []contracts.Warning, int) {
-	byMember := make(map[int]safeReconciliationGroup, len(groups)*2)
-	for _, group := range groups {
-		for _, member := range group.members {
-			byMember[member] = group
-		}
-	}
-	output := make([]normalizedRecord, 0, len(records)-len(groups))
-	warnings := make([]contracts.Warning, 0, len(groups))
-	rejectedGroups := 0
-	for index, record := range records {
-		group, grouped := byMember[index]
-		if !grouped {
-			output = append(output, cloneRecord(record))
-			continue
-		}
-		if group.members[0] != index {
-			continue
-		}
-		if !canConsolidate(records, group) {
-			for _, member := range group.members {
-				output = append(output, cloneRecord(records[member]))
-			}
-			warnings = append(warnings, contracts.Warning{Scope: itemScope(records[group.members[0]].earliest), ReasonCode: ReasonCodeItemSemanticProposalInvalid, Message: "proposal group preserved because currency may only be consolidated with aliases of one denomination"})
-			rejectedGroups++
-			continue
-		}
-		consolidated := consolidateSemanticGroup(records, group, order)
-		output = append(output, consolidated)
-		warnings = append(warnings, semanticDuplicateWarning(consolidated, records[group.canonical]))
-	}
-	return output, warnings, rejectedGroups
-}
-
-func canConsolidate(records []normalizedRecord, group safeReconciliationGroup) bool {
+func canConsolidate(items []dnd.Item) bool {
 	denomination := ""
 	hasCurrency := false
 	hasNonCurrency := false
 	hasConflictingDenominations := false
-	for _, member := range group.members {
-		current := currencyDenomination(records[member].item.Name)
+	for _, item := range items {
+		current := currencyDenomination(item.Name)
 		if current == "" {
 			hasNonCurrency = true
 			continue
@@ -131,29 +133,18 @@ func currencyDenomination(name string) string {
 	}
 }
 
-func consolidateSemanticGroup(records []normalizedRecord, group safeReconciliationGroup, order shared.SourceRefOrder) normalizedRecord {
-	output := cloneRecord(records[group.members[0]])
-	output.item.Name = records[group.canonical].item.Name
-	for _, member := range group.members[1:] {
-		output.item.SourceRefs = append(output.item.SourceRefs, records[member].item.SourceRefs...)
-		output.inputIndexes = append(output.inputIndexes, records[member].inputIndexes...)
-		if records[member].earliest < output.earliest {
-			output.earliest = records[member].earliest
-		}
-	}
-	output.inputIndexes = sortedUniqueIndexes(output.inputIndexes)
-	output.item.SourceRefs = order.Canonicalize(output.item.SourceRefs)
-	output.item.ID = identity.DeriveID(output.item.Name)
-	return output
-}
-
-func semanticDuplicateWarning(record normalizedRecord, canonical normalizedRecord) contracts.Warning {
-	details := make([]string, 0, len(record.inputIndexes)+1)
-	for _, inputIndex := range record.inputIndexes {
+func semanticDuplicateWarning(provenance semanticreconcile.GroupProvenance, canonical normalizedRecord) contracts.Warning {
+	inputIndexes := provenance.OriginalInputIndexes()
+	details := make([]string, 0, len(inputIndexes)+1)
+	for _, inputIndex := range inputIndexes {
 		details = append(details, fmt.Sprintf("input index %d", inputIndex))
 	}
-	if canonical.earliest != record.earliest {
+	if canonical.earliest != provenance.EarliestInputPosition() {
 		details = append(details, fmt.Sprintf("canonical display name from input index %d", canonical.earliest))
 	}
-	return contracts.Warning{Scope: itemScope(record.earliest), ReasonCode: ReasonCodeDuplicateItemCollapsed, Message: diagnostics.Aggregate("semantic duplicate consolidation", details)}
+	return contracts.Warning{
+		Scope:      itemScope(provenance.EarliestInputPosition()),
+		ReasonCode: ReasonCodeDuplicateItemCollapsed,
+		Message:    diagnostics.Aggregate("semantic duplicate consolidation", details),
+	}
 }

internal/modules/dnd/normalize/locationregistry/normalizer.go

@@ -4,7 +4,6 @@ package locationregistry
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"reflect"
 	"sort"
@@ -14,19 +13,18 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/locations/identity"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 )
 
 const (
 	Key                 = "dnd/location-registry"
 	PromptID            = "dnd.location_registry.normalize"
-	normalizationPolicy   = "dnd.location_registry.normalize.v2"
-	semanticContextPolicy = "dnd.entity_reconcile.context.v1"
-	semanticContextRadius = 2
+	PromptVersion       = "v1"
+	normalizationPolicy = "dnd.location_registry.normalize.v3"
 	NormalizationPolicy = normalizationPolicy
 
 	ReasonCodeLocationFieldsNormalized                = "location_fields_normalized"
@@ -48,9 +46,7 @@ var _ pipeline.CheckpointFingerprintProvider = (*Normalizer)(nil)
 type Options struct{}
 
 type Normalizer struct {
-	llm               contracts.StructuredLLMClient
-	promptSHA         string
-	responseSchemaSHA string
+	engine *semanticreconcile.Engine
 }
 
 func New(llmClient contracts.StructuredLLMClient, _ Options) (*Normalizer, error) {
@@ -61,46 +57,45 @@ func New(llmClient contracts.StructuredLLMClient, _ Options) (*Normalizer, error
 	if err != nil {
 		return nil, normalizerErrorf("load prompt metadata: %w", err)
 	}
-	responseSchema, err := entityreconcile.LoadResponseSchema()
+	engine, err := semanticreconcile.NewEngine(llmClient, semanticreconcile.PromptSpec{
+		ID: PromptID, Version: PromptVersion, SHA256: promptSHA,
+	}, semanticreconcile.DefaultLimits())
 	if err != nil {
-		return nil, normalizerErrorf("load response schema: %w", err)
+		return nil, normalizerErrorf("construct semantic reconciliation engine: %w", err)
 	}
-	return &Normalizer{llm: llmClient, promptSHA: promptSHA, responseSchemaSHA: responseSchema.SHA256}, nil
+	return &Normalizer{engine: engine}, nil
 }
 
 func (n *Normalizer) Key() string                               { return Key }
 func (n *Normalizer) ReferenceSlots() []contracts.ReferenceSlot { return nil }
 
 func (n *Normalizer) ManifestMetadata() map[string]any {
-	if n == nil {
+	if n == nil || n.engine == nil {
 		return nil
 	}
-	return map[string]any{
-		"prompt_id": PromptID, "prompt_version": entityreconcile.SchemaVersion, "prompt_sha256": n.promptSHA,
-		"response_schema_key": string(entityreconcile.ResponseSchemaKey), "response_schema_id": entityreconcile.ResponseSchemaID,
-		"response_schema_name": entityreconcile.ResponseSchemaName, "response_schema_version": entityreconcile.SchemaVersion,
-		"response_schema_sha256": n.responseSchemaSHA, "identity_policy": identity.Policy,
-		"normalization_policy": normalizationPolicy, "semantic_context_policy": semanticContextPolicy, "semantic_context_radius": semanticContextRadius,
-	}
+	metadata := n.engine.ManifestMetadata()
+	metadata["identity_policy"] = identity.Policy
+	metadata["normalization_policy"] = normalizationPolicy
+	return metadata
 }
 
 func (n *Normalizer) CheckpointFingerprints() []pipeline.CheckpointFingerprint {
-	if n == nil {
+	if n == nil || n.engine == nil {
 		return nil
 	}
-	return []pipeline.CheckpointFingerprint{
-		{Name: "prompt", Value: n.promptSHA}, {Name: "response_schema", Value: n.responseSchemaSHA},
-		{Name: "identity_policy", Value: identity.Policy}, {Name: "normalization_policy", Value: normalizationPolicy},
-		{Name: "semantic_context_policy", Value: fmt.Sprintf("%s:%d", semanticContextPolicy, semanticContextRadius)},
-	}
+	fingerprints := n.engine.CheckpointFingerprints()
+	return append(fingerprints,
+		pipeline.CheckpointFingerprint{Name: "identity_policy", Value: identity.Policy},
+		pipeline.CheckpointFingerprint{Name: "normalization_policy", Value: normalizationPolicy},
+	)
 }
 
 func (n *Normalizer) Normalize(ctx context.Context, req contracts.TypedNormalizeRequest[dnd.LocationRegistry]) (contracts.TypedNormalizeResult[dnd.LocationRegistry], error) {
 	if n == nil {
 		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("normalizer must not be nil")
 	}
-	if n.llm == nil {
-		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("LLM client must not be nil")
+	if n.engine == nil {
+		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("semantic reconciliation engine must not be nil")
 	}
 	if ctx == nil {
 		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("context must not be nil")
@@ -108,36 +103,50 @@ func (n *Normalizer) Normalize(ctx context.Context, req contracts.TypedNormalize
 	if err := ctx.Err(); err != nil {
 		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("context error before normalize: %w", err)
 	}
+	if req.Source == nil {
+		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("source document must not be nil")
+	}
 
 	order := shared.NewSourceRefOrder(req.Source)
 	records, warnings := preprocessRecords(req.MergeOutput.Value, order)
 	deterministic := recordList(records)
-	materials, ready, err := entityreconcile.BuildContext(req.Source, reconciliationCandidates(records), semanticContextRadius)
-	if err != nil {
-		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("build semantic context: %w", err)
-	}
-	if !ready {
+	if len(records) < 2 {
 		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{Value: deterministic, Warnings: limitWarnings(warnings)}, nil
 	}
 
-	var response entityreconcile.ProposalResponse
-	if _, err := n.llm.CompleteStructured(ctx, contracts.StructuredCompletionRequest{
-		StageName: Key, PromptID: PromptID, PromptVersion: entityreconcile.SchemaVersion,
+	candidates, envelopes, err := reconciliationInputs(records)
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("prepare semantic reconciliation inputs: %w", err)
+	}
+	reconciliation, err := n.engine.Reconcile(ctx, semanticreconcile.Request{
+		StageName: Key, Source: req.Source, Candidates: candidates,
 		ProfileID: req.LLMProfile, SessionID: req.SessionID,
-		Inputs: contracts.LLMInputSet{"candidates": materials.Candidates, "transcript": materials.Transcript},
-	}, &response); err != nil {
-		if errors.Is(err, contracts.ErrInvalidStructuredOutput) {
+	})
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("reconcile semantic duplicates: %w", err)
+	}
+
+	switch reconciliation.Disposition() {
+	case semanticreconcile.SkippedInsufficientCandidates:
+		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{Value: deterministic, Warnings: limitWarnings(warnings)}, nil
+	case semanticreconcile.SkippedLimitExceeded:
+		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{Value: deterministic, Warnings: limitWarningsWithSemanticFallback(warnings)}, nil
+	case semanticreconcile.RetryableInvalidStructuredOutput:
 		return n.invalidStructuredResult(deterministic, warnings), nil
+	case semanticreconcile.Complete, semanticreconcile.RetryableDiscardedProposalGroups:
+	default:
+		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("unknown semantic reconciliation disposition %d", reconciliation.Disposition())
 	}
-		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("complete structured output: %w", err)
+
+	applied, semanticWarnings, err := applyReconciliationPlan(reconciliation.Plan(), records, envelopes, order)
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{}, normalizerErrorf("apply semantic reconciliation plan: %w", err)
 	}
-	assessment := materials.Assess(response)
-	applied, semanticWarnings := applySafeGroups(records, reconciliationGroups(assessment, materials.CandidateKeys()), order)
 	warnings = append(warnings, semanticWarnings...)
-	if assessment.DiscardedGroups() == 0 {
+	if reconciliation.Disposition() == semanticreconcile.Complete {
 		return contracts.TypedNormalizeResult[dnd.LocationRegistry]{Value: recordList(applied), Warnings: limitWarnings(warnings)}, nil
 	}
-	return retryResult(recordList(applied), warnings, assessment), nil
+	return retryResult(recordList(applied), warnings, reconciliation), nil
 }
 
 func (n *Normalizer) invalidStructuredResult(value dnd.LocationRegistry, warnings []contracts.Warning) contracts.TypedNormalizeResult[dnd.LocationRegistry] {
@@ -147,10 +156,10 @@ func (n *Normalizer) invalidStructuredResult(value dnd.LocationRegistry, warning
 	}}
 }
 
-func retryResult(value dnd.LocationRegistry, warnings []contracts.Warning, assessment entityreconcile.Assessment) contracts.TypedNormalizeResult[dnd.LocationRegistry] {
+func retryResult(value dnd.LocationRegistry, warnings []contracts.Warning, reconciliation semanticreconcile.Result) contracts.TypedNormalizeResult[dnd.LocationRegistry] {
 	return contracts.TypedNormalizeResult[dnd.LocationRegistry]{Value: value, Warnings: limitWarningsForRetry(warnings), Retry: &contracts.NormalizeRetry{
-		ReasonCode: ReasonCodeLocationSemanticProposalInvalid, Message: diagnostics.Aggregate("semantic proposal requires retry", reconciliationIssues(assessment)),
-		FallbackWarnings: []contracts.Warning{semanticFallbackWarning(assessment.DiscardedGroups())},
+		ReasonCode: ReasonCodeLocationSemanticProposalInvalid, Message: diagnostics.Aggregate("semantic proposal requires retry", semanticreconcile.IssueDetails(reconciliation.Issues())),
+		FallbackWarnings: []contracts.Warning{semanticFallbackWarning(reconciliation.DiscardedGroupCount())},
 	}}
 }
 
@@ -178,6 +187,10 @@ func limitWarningsForRetry(warnings []contracts.Warning) []contracts.Warning {
 	return append(bounded, contracts.Warning{Scope: "locations", ReasonCode: ReasonCodeLocationNormalizationWarningsOmitted, Message: fmt.Sprintf("%d additional warning(s) omitted", len(warnings)-displayed)})
 }
 
+func limitWarningsWithSemanticFallback(warnings []contracts.Warning) []contracts.Warning {
+	return append(limitWarningsForRetry(warnings), semanticFallbackWarning(-1))
+}
+
 type normalizedRecord struct {
 	location     dnd.Location
 	inputIndexes []int

internal/modules/dnd/normalize/locationregistry/normalizer_test.go

@@ -2,7 +2,9 @@ package locationregistry
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
+	"fmt"
 	"reflect"
 	"strconv"
 	"strings"
@@ -11,9 +13,10 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/locations/identity"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
+	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
 )
 
 func TestModuleContractAndMetadata(t *testing.T) {
@@ -30,11 +33,24 @@ func TestModuleContractAndMetadata(t *testing.T) {
 	}
 	normalizer := newNormalizer(t, &recordingLocationNormalizerClient{})
 	metadata := normalizer.ManifestMetadata()
-	if metadata["identity_policy"] != identity.Policy || metadata["response_schema_id"] != entityreconcile.ResponseSchemaID || metadata["normalization_policy"] != normalizationPolicy || metadata["semantic_context_radius"] != semanticContextRadius {
+	limits, ok := metadata["semantic_reconciliation_limits"].(map[string]any)
+	if !ok || metadata["identity_policy"] != identity.Policy || metadata["normalization_policy"] != normalizationPolicy || metadata["prompt_id"] != PromptID || metadata["prompt_version"] != PromptVersion || metadata["response_schema_key"] != string(semanticreconcile.ResponseSchemaKey) || metadata["response_schema_id"] != semanticreconcile.ResponseSchemaID || metadata["response_schema_name"] != semanticreconcile.ResponseSchemaName || metadata["semantic_reconciliation_policy"] != semanticreconcile.Policy || len(limits) != 3 {
 		t.Fatalf("metadata = %#v", metadata)
 	}
-	if got := normalizer.CheckpointFingerprints(); len(got) != 5 || got[2].Value != identity.Policy || got[3].Value != normalizationPolicy || got[4].Value != semanticContextPolicy+":2" {
-		t.Fatalf("fingerprints = %#v", got)
+	for _, name := range []string{"prompt", "response_schema", "semantic_reconciliation_policy", "semantic_reconciliation_limits", "identity_policy", "normalization_policy"} {
+		if !hasFingerprint(normalizer.CheckpointFingerprints(), name) {
+			t.Fatalf("fingerprints missing %q", name)
+		}
+	}
+}
+
+func TestNormalizeRejectsNilSourceDocument(t *testing.T) {
+	_, err := newNormalizer(t, &recordingLocationNormalizerClient{}).Normalize(
+		context.Background(),
+		contracts.TypedNormalizeRequest[dnd.LocationRegistry]{},
+	)
+	if err == nil || !strings.Contains(err.Error(), "source document must not be nil") {
+		t.Fatalf("Normalize() error = %v, want nil source rejection", err)
 	}
 }
 
@@ -46,7 +62,8 @@ func TestNormalizePreparesOnlyExactDuplicatesAndRetainsSameNameAndNestedPlaces(t
 		{Name: "The Tavern Cellar", SourceRefs: []source.SourceRef{{SourceID: "session", StartUnitID: 2, EndUnitID: 2}}},
 	}}
 	before := dnd.LocationRegistry{Locations: append([]dnd.Location(nil), input.Locations...)}
-	result, err := newNormalizer(t, &recordingLocationNormalizerClient{}).Normalize(context.Background(), normalizeRequest(input))
+	client := &recordingLocationNormalizerClient{}
+	result, err := newNormalizer(t, client).Normalize(context.Background(), normalizeRequest(input))
 	if err != nil || len(result.Value.Locations) != 3 {
 		t.Fatalf("Normalize() = %#v, %v; want one exact duplicate removed", result, err)
 	}
@@ -56,7 +73,7 @@ func TestNormalizePreparesOnlyExactDuplicatesAndRetainsSameNameAndNestedPlaces(t
 	if got := []string{result.Value.Locations[0].Name, result.Value.Locations[1].Name, result.Value.Locations[2].Name}; !reflect.DeepEqual(got, []string{"The Tavern", "The Tavern", "The Tavern Cellar"}) {
 		t.Fatalf("locations = %#v, want same names and nested place retained", got)
 	}
-	if result.Value.Locations[0].ID == result.Value.Locations[1].ID || !hasWarning(result.Warnings, ReasonCodeDuplicateLocationCollapsed) {
+	if result.Value.Locations[0].ID == result.Value.Locations[1].ID || !hasWarning(result.Warnings, ReasonCodeDuplicateLocationCollapsed) || len(client.requests) != 0 {
 		t.Fatalf("result = %#v, want evidence-anchored IDs and exact duplicate warning", result)
 	}
 }
@@ -79,7 +96,7 @@ func BenchmarkExactDuplicateGroupsManyDistinct(b *testing.B) {
 }
 
 func TestNormalizeAppliesSafeAliasGroupAndUsesContextualInputs(t *testing.T) {
-	client := &recordingLocationNormalizerClient{response: `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"}]}`}
+	client := &recordingLocationNormalizerClient{response: `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2}]}`}
 	doc := semanticDocument()
 	input := dnd.LocationRegistry{Locations: []dnd.Location{
 		{Name: "Old Mill", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 10, EndUnitID: 10}}},
@@ -107,7 +124,7 @@ func TestNormalizeRejectsUnsafeAndOverlappingGroupsWithoutLosingCandidates(t *te
 		{Name: "Mill", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 20, EndUnitID: 20}}},
 		{Name: "Tavern", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 30, EndUnitID: 30}}},
 	}}
-	client := &recordingLocationNormalizerClient{response: `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000001"},{"members":["candidate-000002","candidate-000003"],"canonical":"candidate-000003"}]}`}
+	client := &recordingLocationNormalizerClient{response: `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":1},{"candidate_ids":[2,3],"canonical_candidate_id":3}]}`}
 	result, err := newNormalizer(t, client).Normalize(context.Background(), normalizeRequestWithSource(input, doc))
 	if err != nil || result.Retry == nil || len(result.Value.Locations) != 3 || !strings.Contains(result.Retry.Message, "overlapping_member") {
 		t.Fatalf("Normalize() = %#v, %v; want safe retry fallback", result, err)
@@ -117,6 +134,54 @@ func TestNormalizeRejectsUnsafeAndOverlappingGroupsWithoutLosingCandidates(t *te
 	}
 }
 
+func TestReconciliationCandidatesKeepSameNameEvidenceDistinct(t *testing.T) {
+	doc := semanticDocument()
+	records := []normalizedRecord{
+		{location: dnd.Location{Name: "The Tavern", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 10, EndUnitID: 10}}}, inputIndexes: []int{0}, earliest: 0},
+		{location: dnd.Location{Name: "The Tavern", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 30, EndUnitID: 30}}}, inputIndexes: []int{1}, earliest: 1},
+	}
+	candidates, _, err := reconciliationInputs(records)
+	if err != nil {
+		t.Fatalf("reconciliationInputs() error = %v", err)
+	}
+	preparation, err := semanticreconcile.Prepare(doc, candidates, semanticreconcile.DefaultLimits())
+	if err != nil || preparation.Disposition() != semanticreconcile.Ready {
+		t.Fatalf("Prepare() = %#v, %v; want ready candidates", preparation, err)
+	}
+	var candidateInput struct {
+		Candidates []struct {
+			CandidateID int    `json:"candidate_id"`
+			Label       string `json:"label"`
+		} `json:"candidates"`
+	}
+	if err := json.Unmarshal(preparation.Materials()["candidates"].Content, &candidateInput); err != nil {
+		t.Fatal(err)
+	}
+	if len(candidateInput.Candidates) != 2 || candidateInput.Candidates[0].CandidateID != 1 || candidateInput.Candidates[1].CandidateID != 2 || candidateInput.Candidates[0].Label != "The Tavern" || candidateInput.Candidates[1].Label != "The Tavern" {
+		t.Fatalf("candidate input = %#v, want distinct integer handles for equal names", candidateInput)
+	}
+}
+
+func TestNormalizeLimitSkipDoesNotCallLLMAndAddsBoundedFallbackWarning(t *testing.T) {
+	client := &recordingLocationNormalizerClient{}
+	doc := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{{ID: 1, Kind: "narration", Text: "A sprawling city"}}}
+	limit := semanticreconcile.DefaultLimits().MaximumCandidates
+	input := dnd.LocationRegistry{Locations: make([]dnd.Location, limit+1)}
+	for index := range input.Locations {
+		input.Locations[index] = dnd.Location{Name: fmt.Sprintf("Place %d", index), SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 1, EndUnitID: 1}}}
+	}
+	result, err := newNormalizer(t, client).Normalize(context.Background(), normalizeRequestWithSource(input, doc))
+	if err != nil || result.Retry != nil {
+		t.Fatalf("Normalize() = %#v, %v; want deterministic limit fallback", result, err)
+	}
+	if len(client.requests) != 0 || len(result.Value.Locations) != limit+1 {
+		t.Fatalf("completion calls = %d, locations = %d; want no call and all records", len(client.requests), len(result.Value.Locations))
+	}
+	if !hasWarning(result.Warnings, ReasonCodeLocationSemanticReconciliationExhausted) || len(result.Warnings) > diagnostics.MaxWarnings {
+		t.Fatalf("warnings = %#v, want bounded reconciliation fallback", result.Warnings)
+	}
+}
+
 func TestNormalizeHandlesRetryFallbackAndErrors(t *testing.T) {
 	doc := semanticDocument()
 	input := dnd.LocationRegistry{Locations: []dnd.Location{{Name: "Old Mill", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 10, EndUnitID: 10}}}, {Name: "Mill", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 20, EndUnitID: 20}}}}}
@@ -152,3 +217,12 @@ func TestNormalizeOrdersEvidenceAndIsIdempotent(t *testing.T) {
 		t.Fatalf("second Normalize() = %#v, %v; want idempotent value %#v", second, err, first.Value)
 	}
 }
+
+func hasFingerprint(fingerprints []pipeline.CheckpointFingerprint, name string) bool {
+	for _, fingerprint := range fingerprints {
+		if fingerprint.Name == name && fingerprint.Value != "" {
+			return true
+		}
+	}
+	return false
+}

internal/modules/dnd/normalize/locationregistry/prompt_assets.go

@@ -8,19 +8,26 @@ import (
 	rootassets "gitea.maximumdirect.net/eric/notarius/assets"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/promptfs"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 )
 
 const promptAssetRoot = "assets/prompts"
 
-var promptAssetManifest = shared.PromptAssetManifest{
+func promptAssetManifest() (shared.PromptAssetManifest, error) {
+	sharedFiles, err := semanticreconcile.SharedPromptFiles()
+	if err != nil {
+		return shared.PromptAssetManifest{}, fmt.Errorf("load shared semantic reconciliation prompt assets: %w", err)
+	}
+	return shared.PromptAssetManifest{
 		ModuleDir: PromptID,
 		ModuleFiles: []promptfs.ModulePromptFile{
 			{Name: "prompt.yaml", Path: "prompts/prompt.yaml"},
 			{Name: "instructions.md", Path: "prompts/instructions.md"},
-		{Name: "candidates.md", Path: "prompts/candidates.md"},
 		},
-	SharedFiles: []string{"common-dnd-system.md", "common-dnd-entity-reconciliation.md", "common-dnd-transcript-windows.md"},
+		SharedFiles:         []string{"common-dnd-system.md"},
+		ExternalSharedFiles: sharedFiles,
+	}, nil
 }
 
 func moduleAssetFS() (fs.FS, error) {
@@ -36,7 +43,11 @@ func RegisterPromptAssets(registry *llm.AssetRegistry) error {
 	if err != nil {
 		return err
 	}
-	promptFS, err := promptAssetManifest.PromptFS(assets)
+	manifest, err := promptAssetManifest()
+	if err != nil {
+		return err
+	}
+	promptFS, err := manifest.PromptFS(assets)
 	if err != nil {
 		return fmt.Errorf("prepare location normalization prompt assets: %w", err)
 	}
@@ -50,7 +61,12 @@ func promptAssetMetadata() (string, error) {
 			promptAssetHashErr = err
 			return
 		}
-		promptAssetHash, promptAssetHashErr = promptAssetManifest.Hash(assets)
+		manifest, err := promptAssetManifest()
+		if err != nil {
+			promptAssetHashErr = err
+			return
+		}
+		promptAssetHash, promptAssetHashErr = manifest.Hash(assets)
 	})
 	return promptAssetHash, promptAssetHashErr
 }

internal/modules/dnd/normalize/locationregistry/prompt_assets_test.go

@@ -7,13 +7,13 @@ import (
 	"time"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/promptkit"
 )
 
 func TestRegisterPromptAssetsPreparesLocationNormalizationPrompt(t *testing.T) {
 	registry := llm.NewAssetRegistry()
-	if err := entityreconcile.RegisterSchemaAssets(registry); err != nil {
+	if err := semanticreconcile.RegisterAssets(registry); err != nil {
 		t.Fatal(err)
 	}
 	if err := RegisterPromptAssets(registry); err != nil {
@@ -28,11 +28,11 @@ func TestRegisterPromptAssetsPreparesLocationNormalizationPrompt(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	prepared, err := engine.Prepare(context.Background(), promptkit.RunRequest{PromptID: PromptID, PromptVersion: entityreconcile.SchemaVersion, ProfileID: "location-normalize-test", Inputs: map[string]promptkit.ArtifactRef{"candidates": promptkit.Inline(`{"candidates":[{"name":"The Tavern","source_refs":[{"start_unit_id":1,"end_unit_id":1}]}]}`), "transcript": promptkit.Inline(`{"windows":[{"units":[]}]}`)}})
+	prepared, err := engine.Prepare(context.Background(), promptkit.RunRequest{PromptID: PromptID, PromptVersion: PromptVersion, ProfileID: "location-normalize-test", Inputs: map[string]promptkit.ArtifactRef{"candidates": promptkit.Inline(`{"candidates":[{"candidate_id":1,"label":"The Tavern","source_refs":[{"start_unit_id":1,"end_unit_id":1}]}]}`), "transcript": promptkit.Inline(`{"windows":[{"units":[]}]}`)}})
 	if err != nil {
 		t.Fatal(err)
 	}
-	if prepared.OutputContract.SchemaPath != "dnd_entity_reconcile_llm.v1.json" {
+	if prepared.OutputContract.SchemaPath != "semantic_reconciliation_llm.v1.json" || !strings.Contains(prepared.Messages[1].Content, "candidate_id") || !strings.Contains(prepared.Messages[1].Content, "integer") || !strings.Contains(prepared.Messages[2].Content, "same physical place") || !strings.Contains(prepared.Messages[2].Content, "parent and child places") {
 		t.Fatalf("prepared prompt = %#v", prepared)
 	}
 	for _, index := range []int{2, 4} {

internal/modules/dnd/normalize/locationregistry/reconciliation.go

@@ -4,109 +4,77 @@ import (
 	"fmt"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
+	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/locations/identity"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 )
 
-type safeReconciliationGroup struct {
-	members   []int
-	canonical int
-}
-
-func reconciliationCandidates(records []normalizedRecord) []entityreconcile.Candidate {
-	candidates := make([]entityreconcile.Candidate, len(records))
+func reconciliationInputs(records []normalizedRecord) ([]semanticreconcile.Candidate, []semanticreconcile.Record[dnd.Location], error) {
+	candidates := make([]semanticreconcile.Candidate, len(records))
+	envelopes := make([]semanticreconcile.Record[dnd.Location], len(records))
 	for index, record := range records {
-		candidates[index] = entityreconcile.Candidate{Name: record.location.Name, SourceRefs: cloneSourceRefs(record.location.SourceRefs)}
+		candidates[index] = semanticreconcile.Candidate{
+			Label:      record.location.Name,
+			SourceRefs: cloneSourceRefs(record.location.SourceRefs),
 		}
-	return candidates
+		envelope, err := semanticreconcile.NewRecord(record.location, record.inputIndexes, record.earliest, cloneLocation)
+		if err != nil {
+			return nil, nil, fmt.Errorf("record %d: %w", index, err)
+		}
+		envelopes[index] = envelope
+	}
+	return candidates, envelopes, nil
 }
 
-func reconciliationGroups(assessment entityreconcile.Assessment, candidateKeys []string) []safeReconciliationGroup {
-	positions := make(map[string]int, len(candidateKeys))
-	for index, key := range candidateKeys {
-		positions[key] = index
+func applyReconciliationPlan(plan semanticreconcile.Plan, records []normalizedRecord, envelopes []semanticreconcile.Record[dnd.Location], order shared.SourceRefOrder) ([]normalizedRecord, []contracts.Warning, error) {
+	application, err := semanticreconcile.ApplyPlan(plan, envelopes, semanticreconcile.ApplicationPolicy[dnd.Location]{
+		CloneValue: cloneLocation,
+		ConsolidateGroup: func(members []dnd.Location, canonical dnd.Location) (dnd.Location, error) {
+			output := cloneLocation(canonical)
+			output.SourceRefs = nil
+			for _, member := range members {
+				output.SourceRefs = append(output.SourceRefs, member.SourceRefs...)
 			}
-	safeGroups := assessment.SafeGroups()
-	groups := make([]safeReconciliationGroup, 0, len(safeGroups))
-	for _, group := range safeGroups {
-		members := group.Members()
-		memberPositions := make([]int, len(members))
-		valid := true
-		for index, key := range members {
-			position, ok := positions[key]
-			if !ok {
-				valid = false
-				break
+			output.SourceRefs = order.Canonicalize(output.SourceRefs)
+			output.ID = identity.DeriveID(output.Name, output.SourceRefs)
+			return output, nil
+		},
+	})
+	if err != nil {
+		return nil, nil, err
 	}
-			memberPositions[index] = position
-		}
-		canonical, ok := positions[group.Canonical()]
-		if valid && ok {
-			groups = append(groups, safeReconciliationGroup{members: memberPositions, canonical: canonical})
+
+	applied := application.Records()
+	output := make([]normalizedRecord, len(applied))
+	for index, record := range applied {
+		output[index] = normalizedRecord{
+			location:     record.Value(),
+			inputIndexes: record.OriginalInputIndexes(),
+			earliest:     record.EarliestInputPosition(),
 		}
 	}
-	return groups
+	warnings := make([]contracts.Warning, 0, len(application.AppliedGroups()))
+	for _, event := range application.AppliedGroups() {
+		provenance := event.Provenance()
+		warnings = append(warnings, semanticDuplicateWarning(provenance, records[provenance.CanonicalPosition()]))
+	}
+	return output, warnings, nil
 }
 
-func reconciliationIssues(assessment entityreconcile.Assessment) []string {
-	issues := assessment.Issues()
-	details := make([]string, len(issues))
-	for index, issue := range issues {
-		details[index] = fmt.Sprintf("group %d: %s", issue.GroupIndex, issue.Category)
-	}
-	return details
-}
-
-func applySafeGroups(records []normalizedRecord, groups []safeReconciliationGroup, order shared.SourceRefOrder) ([]normalizedRecord, []contracts.Warning) {
-	byMember := make(map[int]safeReconciliationGroup, len(groups)*2)
-	for _, group := range groups {
-		for _, member := range group.members {
-			byMember[member] = group
-		}
-	}
-	output := make([]normalizedRecord, 0, len(records)-len(groups))
-	warnings := make([]contracts.Warning, 0, len(groups))
-	for index, record := range records {
-		group, grouped := byMember[index]
-		if !grouped {
-			output = append(output, cloneRecord(record))
-			continue
-		}
-		if group.members[0] != index {
-			continue
-		}
-		consolidated := consolidateSemanticGroup(records, group, order)
-		output = append(output, consolidated)
-		warnings = append(warnings, semanticDuplicateWarning(consolidated, records[group.canonical]))
-	}
-	return output, warnings
-}
-
-func consolidateSemanticGroup(records []normalizedRecord, group safeReconciliationGroup, order shared.SourceRefOrder) normalizedRecord {
-	output := cloneRecord(records[group.members[0]])
-	output.location.Name = records[group.canonical].location.Name
-	for _, member := range group.members[1:] {
-		output.location.SourceRefs = append(output.location.SourceRefs, records[member].location.SourceRefs...)
-		output.inputIndexes = append(output.inputIndexes, records[member].inputIndexes...)
-		if records[member].earliest < output.earliest {
-			output.earliest = records[member].earliest
-		}
-	}
-	output.inputIndexes = sortedUniqueIndexes(output.inputIndexes)
-	output.location.SourceRefs = order.Canonicalize(output.location.SourceRefs)
-	output.location.ID = identity.DeriveID(output.location.Name, output.location.SourceRefs)
-	return output
-}
-
-func semanticDuplicateWarning(record normalizedRecord, canonical normalizedRecord) contracts.Warning {
-	details := make([]string, 0, len(record.inputIndexes)+1)
-	for _, inputIndex := range record.inputIndexes {
+func semanticDuplicateWarning(provenance semanticreconcile.GroupProvenance, canonical normalizedRecord) contracts.Warning {
+	inputIndexes := provenance.OriginalInputIndexes()
+	details := make([]string, 0, len(inputIndexes)+1)
+	for _, inputIndex := range inputIndexes {
 		details = append(details, fmt.Sprintf("input index %d", inputIndex))
 	}
-	if canonical.earliest != record.earliest {
+	if canonical.earliest != provenance.EarliestInputPosition() {
 		details = append(details, fmt.Sprintf("canonical display name from input index %d", canonical.earliest))
 	}
-	return contracts.Warning{Scope: locationScope(record.earliest), ReasonCode: ReasonCodeDuplicateLocationCollapsed, Message: diagnostics.Aggregate("semantic duplicate consolidation", details)}
+	return contracts.Warning{
+		Scope:      locationScope(provenance.EarliestInputPosition()),
+		ReasonCode: ReasonCodeDuplicateLocationCollapsed,
+		Message:    diagnostics.Aggregate("semantic duplicate consolidation", details),
+	}
 }

internal/modules/dnd/normalize/locationregistry/test_helpers_test.go

@@ -3,14 +3,11 @@ package locationregistry
 import (
 	"context"
 	"encoding/json"
-	"strconv"
-	"strings"
 	"testing"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 )
 
 type recordingLocationNormalizerClient struct {
@@ -28,53 +25,13 @@ func (c *recordingLocationNormalizerClient) CompleteStructured(_ context.Context
 	if response == "" {
 		response = `{"duplicate_groups":[]}`
 	}
-	content, err := contextualProposalResponse(response, request.Inputs["candidates"].Content)
-	if err != nil {
-		return contracts.StructuredCompletionResponse{}, err
-	}
+	content := []byte(response)
 	if err := json.Unmarshal(content, output); err != nil {
 		return contracts.StructuredCompletionResponse{}, err
 	}
 	return contracts.StructuredCompletionResponse{Content: content}, nil
 }
 
-func contextualProposalResponse(response string, candidateContent []byte) ([]byte, error) {
-	if !strings.Contains(response, "candidate-") {
-		return []byte(response), nil
-	}
-	var selection struct {
-		DuplicateGroups []struct {
-			Members   []string `json:"members"`
-			Canonical string   `json:"canonical"`
-		} `json:"duplicate_groups"`
-	}
-	if err := json.Unmarshal([]byte(response), &selection); err != nil {
-		return nil, err
-	}
-	var candidates struct {
-		Candidates []entityreconcile.Selector `json:"candidates"`
-	}
-	if err := json.Unmarshal(candidateContent, &candidates); err != nil {
-		return nil, err
-	}
-	selector := func(key string) entityreconcile.Selector {
-		index, err := strconv.Atoi(strings.TrimPrefix(key, "candidate-"))
-		if err != nil || index < 1 || index > len(candidates.Candidates) {
-			return entityreconcile.Selector{Name: key, SourceRefs: []entityreconcile.SourceRange{}}
-		}
-		return candidates.Candidates[index-1].Clone()
-	}
-	proposal := entityreconcile.ProposalResponse{DuplicateGroups: make([]entityreconcile.DuplicateGroup, len(selection.DuplicateGroups))}
-	for index, group := range selection.DuplicateGroups {
-		members := make([]entityreconcile.Selector, len(group.Members))
-		for memberIndex, key := range group.Members {
-			members[memberIndex] = selector(key)
-		}
-		proposal.DuplicateGroups[index] = entityreconcile.DuplicateGroup{Members: members, Canonical: selector(group.Canonical)}
-	}
-	return json.Marshal(proposal)
-}
-
 func newNormalizer(t *testing.T, client contracts.StructuredLLMClient) *Normalizer {
 	t.Helper()
 	normalizer, err := New(client, Options{})
@@ -84,7 +41,10 @@ func newNormalizer(t *testing.T, client contracts.StructuredLLMClient) *Normaliz
 	return normalizer
 }
 func normalizeRequest(value dnd.LocationRegistry) contracts.TypedNormalizeRequest[dnd.LocationRegistry] {
-	return contracts.TypedNormalizeRequest[dnd.LocationRegistry]{MergeOutput: contracts.MergeArtifact[dnd.LocationRegistry]{Value: value}}
+	return contracts.TypedNormalizeRequest[dnd.LocationRegistry]{
+		Source:      &source.SourceDocument{},
+		MergeOutput: contracts.MergeArtifact[dnd.LocationRegistry]{Value: value},
+	}
 }
 func normalizeRequestWithSource(value dnd.LocationRegistry, doc *source.SourceDocument) contracts.TypedNormalizeRequest[dnd.LocationRegistry] {
 	request := normalizeRequest(value)

internal/modules/dnd/normalize/npcregistry/normalizer.go

@@ -3,7 +3,6 @@ package npcregistry
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"reflect"
 	"sort"
@@ -13,18 +12,18 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/npcs/identity"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 )
 
 const (
 	Key                 = "dnd/npc-registry"
 	PromptID            = "dnd.npc_registry.normalize"
-	normalizationPolicy   = "dnd.npc_registry.normalize.v4"
-	semanticContextPolicy = "dnd.entity_reconcile.context.v1"
+	PromptVersion       = "v1"
+	normalizationPolicy = "dnd.npc_registry.normalize.v5"
 	NormalizationPolicy = normalizationPolicy
 
 	ReasonCodeNPCFieldsNormalized                = "npc_fields_normalized"
@@ -46,9 +45,7 @@ var _ pipeline.CheckpointFingerprintProvider = (*Normalizer)(nil)
 type Options struct{}
 
 type Normalizer struct {
-	llm               contracts.StructuredLLMClient
-	promptSHA         string
-	responseSchemaSHA string
+	engine *semanticreconcile.Engine
 }
 
 func New(llmClient contracts.StructuredLLMClient, _ Options) (*Normalizer, error) {
@@ -59,55 +56,45 @@ func New(llmClient contracts.StructuredLLMClient, _ Options) (*Normalizer, error
 	if err != nil {
 		return nil, normalizerErrorf("load prompt metadata: %w", err)
 	}
-	responseSchema, err := entityreconcile.LoadResponseSchema()
+	engine, err := semanticreconcile.NewEngine(llmClient, semanticreconcile.PromptSpec{
+		ID: PromptID, Version: PromptVersion, SHA256: promptSHA,
+	}, semanticreconcile.DefaultLimits())
 	if err != nil {
-		return nil, normalizerErrorf("load response schema: %w", err)
+		return nil, normalizerErrorf("construct semantic reconciliation engine: %w", err)
 	}
-	return &Normalizer{llm: llmClient, promptSHA: promptSHA, responseSchemaSHA: responseSchema.SHA256}, nil
+	return &Normalizer{engine: engine}, nil
 }
 
 func (n *Normalizer) Key() string                               { return Key }
 func (n *Normalizer) ReferenceSlots() []contracts.ReferenceSlot { return nil }
 
 func (n *Normalizer) ManifestMetadata() map[string]any {
-	if n == nil {
+	if n == nil || n.engine == nil {
 		return nil
 	}
-	return map[string]any{
-		"prompt_id":               PromptID,
-		"prompt_version":          entityreconcile.SchemaVersion,
-		"prompt_sha256":           n.promptSHA,
-		"response_schema_key":     string(entityreconcile.ResponseSchemaKey),
-		"response_schema_id":      entityreconcile.ResponseSchemaID,
-		"response_schema_name":    entityreconcile.ResponseSchemaName,
-		"response_schema_version": entityreconcile.SchemaVersion,
-		"response_schema_sha256":  n.responseSchemaSHA,
-		"identity_policy":         identity.Policy,
-		"normalization_policy":    normalizationPolicy,
-		"semantic_context_policy": semanticContextPolicy,
-		"semantic_context_radius": semanticContextRadius,
-	}
+	metadata := n.engine.ManifestMetadata()
+	metadata["identity_policy"] = identity.Policy
+	metadata["normalization_policy"] = normalizationPolicy
+	return metadata
 }
 
 func (n *Normalizer) CheckpointFingerprints() []pipeline.CheckpointFingerprint {
-	if n == nil {
+	if n == nil || n.engine == nil {
 		return nil
 	}
-	return []pipeline.CheckpointFingerprint{
-		{Name: "prompt", Value: n.promptSHA},
-		{Name: "response_schema", Value: n.responseSchemaSHA},
-		{Name: "identity_policy", Value: identity.Policy},
-		{Name: "normalization_policy", Value: normalizationPolicy},
-		{Name: "semantic_context_policy", Value: fmt.Sprintf("%s:%d", semanticContextPolicy, semanticContextRadius)},
-	}
+	fingerprints := n.engine.CheckpointFingerprints()
+	return append(fingerprints,
+		pipeline.CheckpointFingerprint{Name: "identity_policy", Value: identity.Policy},
+		pipeline.CheckpointFingerprint{Name: "normalization_policy", Value: normalizationPolicy},
+	)
 }
 
 func (n *Normalizer) Normalize(ctx context.Context, req contracts.TypedNormalizeRequest[dnd.NPCRegistry]) (contracts.TypedNormalizeResult[dnd.NPCRegistry], error) {
 	if n == nil {
 		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("normalizer must not be nil")
 	}
-	if n.llm == nil {
-		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("LLM client must not be nil")
+	if n.engine == nil {
+		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("semantic reconciliation engine must not be nil")
 	}
 	if ctx == nil {
 		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("context must not be nil")
@@ -115,37 +102,50 @@ func (n *Normalizer) Normalize(ctx context.Context, req contracts.TypedNormalize
 	if err := ctx.Err(); err != nil {
 		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("context error before normalize: %w", err)
 	}
+	if req.Source == nil {
+		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("source document must not be nil")
+	}
 
 	order := shared.NewSourceRefOrder(req.Source)
 	records, warnings := preprocessRecords(req.MergeOutput.Value, order)
 	deterministic := recordList(records)
-	materials, ready, err := entityreconcile.BuildContext(req.Source, reconciliationCandidates(records), semanticContextRadius)
-	if err != nil {
-		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("build semantic context: %w", err)
-	}
-	if !ready {
+	if len(records) < 2 {
 		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{Value: deterministic, Warnings: limitWarnings(warnings)}, nil
 	}
 
-	var response entityreconcile.ProposalResponse
-	if _, err := n.llm.CompleteStructured(ctx, contracts.StructuredCompletionRequest{
-		StageName: Key, PromptID: PromptID, PromptVersion: entityreconcile.SchemaVersion,
-		ProfileID: req.LLMProfile, SessionID: req.SessionID,
-		Inputs: contracts.LLMInputSet{"candidates": materials.Candidates, "transcript": materials.Transcript},
-	}, &response); err != nil {
-		if errors.Is(err, contracts.ErrInvalidStructuredOutput) {
-			return n.invalidStructuredResult(deterministic, warnings), nil
+	candidates, envelopes, err := reconciliationInputs(records)
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("prepare semantic reconciliation inputs: %w", err)
 	}
-		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("complete structured output: %w", err)
+	reconciliation, err := n.engine.Reconcile(ctx, semanticreconcile.Request{
+		StageName: Key, Source: req.Source, Candidates: candidates,
+		ProfileID: req.LLMProfile, SessionID: req.SessionID,
+	})
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("reconcile semantic duplicates: %w", err)
 	}
 
-	assessment := materials.Assess(response)
-	applied, semanticWarnings := applySafeGroups(records, reconciliationGroups(assessment, materials.CandidateKeys()), order)
+	switch reconciliation.Disposition() {
+	case semanticreconcile.SkippedInsufficientCandidates:
+		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{Value: deterministic, Warnings: limitWarnings(warnings)}, nil
+	case semanticreconcile.SkippedLimitExceeded:
+		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{Value: deterministic, Warnings: limitWarningsWithSemanticFallback(warnings)}, nil
+	case semanticreconcile.RetryableInvalidStructuredOutput:
+		return n.invalidStructuredResult(deterministic, warnings), nil
+	case semanticreconcile.Complete, semanticreconcile.RetryableDiscardedProposalGroups:
+	default:
+		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("unknown semantic reconciliation disposition %d", reconciliation.Disposition())
+	}
+
+	applied, semanticWarnings, err := applyReconciliationPlan(reconciliation.Plan(), records, envelopes, order)
+	if err != nil {
+		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{}, normalizerErrorf("apply semantic reconciliation plan: %w", err)
+	}
 	warnings = append(warnings, semanticWarnings...)
-	if assessment.DiscardedGroups() == 0 {
+	if reconciliation.Disposition() == semanticreconcile.Complete {
 		return contracts.TypedNormalizeResult[dnd.NPCRegistry]{Value: recordList(applied), Warnings: limitWarnings(warnings)}, nil
 	}
-	return retryResult(recordList(applied), warnings, assessment), nil
+	return retryResult(recordList(applied), warnings, reconciliation), nil
 }
 
 func (n *Normalizer) invalidStructuredResult(value dnd.NPCRegistry, warnings []contracts.Warning) contracts.TypedNormalizeResult[dnd.NPCRegistry] {
@@ -160,14 +160,14 @@ func (n *Normalizer) invalidStructuredResult(value dnd.NPCRegistry, warnings []c
 	}
 }
 
-func retryResult(value dnd.NPCRegistry, warnings []contracts.Warning, assessment entityreconcile.Assessment) contracts.TypedNormalizeResult[dnd.NPCRegistry] {
+func retryResult(value dnd.NPCRegistry, warnings []contracts.Warning, reconciliation semanticreconcile.Result) contracts.TypedNormalizeResult[dnd.NPCRegistry] {
 	return contracts.TypedNormalizeResult[dnd.NPCRegistry]{
 		Value:    value,
 		Warnings: limitWarningsForRetry(warnings),
 		Retry: &contracts.NormalizeRetry{
 			ReasonCode:       ReasonCodeNPCSemanticProposalInvalid,
-			Message:          diagnostics.Aggregate("semantic proposal requires retry", reconciliationIssues(assessment)),
-			FallbackWarnings: []contracts.Warning{semanticFallbackWarning(assessment.DiscardedGroups())},
+			Message:          diagnostics.Aggregate("semantic proposal requires retry", semanticreconcile.IssueDetails(reconciliation.Issues())),
+			FallbackWarnings: []contracts.Warning{semanticFallbackWarning(reconciliation.DiscardedGroupCount())},
 		},
 	}
 }
@@ -199,6 +199,10 @@ func limitWarningsForRetry(warnings []contracts.Warning) []contracts.Warning {
 	})
 }
 
+func limitWarningsWithSemanticFallback(warnings []contracts.Warning) []contracts.Warning {
+	return append(limitWarningsForRetry(warnings), semanticFallbackWarning(-1))
+}
+
 type normalizedRecord struct {
 	npc          dnd.NPC
 	inputIndexes []int

internal/modules/dnd/normalize/npcregistry/normalizer_test.go

@@ -4,16 +4,15 @@ import (
 	"context"
 	"encoding/json"
 	"reflect"
-	"strconv"
 	"strings"
 	"testing"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/npcs/identity"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 )
 
 func TestModuleContractAndIdentity(t *testing.T) {
@@ -35,12 +34,16 @@ func TestModuleContractAndIdentity(t *testing.T) {
 		t.Fatal("New(nil, Options{}) error = nil, want nil client rejection")
 	}
 	normalizer := newNormalizer(t, &recordingNPCNormalizerClient{})
-	if metadata := normalizer.ManifestMetadata(); metadata["identity_policy"] != identity.Policy || metadata["normalization_policy"] != normalizationPolicy || metadata["prompt_id"] != PromptID || metadata["response_schema_key"] != string(entityreconcile.ResponseSchemaKey) || metadata["response_schema_id"] != entityreconcile.ResponseSchemaID || metadata["response_schema_name"] != entityreconcile.ResponseSchemaName || metadata["semantic_context_policy"] != semanticContextPolicy || metadata["semantic_context_radius"] != semanticContextRadius {
+	metadata := normalizer.ManifestMetadata()
+	limits, ok := metadata["semantic_reconciliation_limits"].(map[string]any)
+	if !ok || metadata["identity_policy"] != identity.Policy || metadata["normalization_policy"] != normalizationPolicy || metadata["prompt_id"] != PromptID || metadata["prompt_version"] != PromptVersion || metadata["response_schema_key"] != string(semanticreconcile.ResponseSchemaKey) || metadata["response_schema_id"] != semanticreconcile.ResponseSchemaID || metadata["response_schema_name"] != semanticreconcile.ResponseSchemaName || metadata["semantic_reconciliation_policy"] != semanticreconcile.Policy || len(limits) != 3 {
 		t.Fatalf("metadata = %#v", metadata)
 	}
-	wantFingerprints := []pipeline.CheckpointFingerprint{{Name: "prompt", Value: normalizer.promptSHA}, {Name: "response_schema", Value: normalizer.responseSchemaSHA}, {Name: "identity_policy", Value: identity.Policy}, {Name: "normalization_policy", Value: normalizationPolicy}, {Name: "semantic_context_policy", Value: semanticContextPolicy + ":2"}}
-	if got := normalizer.CheckpointFingerprints(); !reflect.DeepEqual(got, wantFingerprints) {
-		t.Fatalf("fingerprints = %#v, want %#v", got, wantFingerprints)
+	fingerprints := normalizer.CheckpointFingerprints()
+	for _, name := range []string{"prompt", "response_schema", "semantic_reconciliation_policy", "semantic_reconciliation_limits", "identity_policy", "normalization_policy"} {
+		if !hasFingerprint(fingerprints, name) {
+			t.Fatalf("fingerprints = %#v, want %q", fingerprints, name)
+		}
 	}
 }
 
@@ -123,6 +126,9 @@ func TestNormalizePreservesInvalidCandidatesAndDoesNotAliasInput(t *testing.T) {
 
 func TestNormalizeHandlesNilAndCanceledCalls(t *testing.T) {
 	normalizer := newNormalizer(t, &recordingNPCNormalizerClient{})
+	if _, err := normalizer.Normalize(context.Background(), contracts.TypedNormalizeRequest[dnd.NPCRegistry]{}); err == nil || !strings.Contains(err.Error(), "source document must not be nil") {
+		t.Fatalf("nil source Normalize() error = %v", err)
+	}
 	result, err := normalizer.Normalize(context.Background(), normalizeRequest(dnd.NPCRegistry{NPCs: nil}))
 	if err != nil || result.Value.NPCs != nil {
 		t.Fatalf("nil list result = %#v, error = %v", result.Value, err)
@@ -157,53 +163,13 @@ func (c *recordingNPCNormalizerClient) CompleteStructured(_ context.Context, req
 	if response == "" {
 		response = `{"duplicate_groups":[]}`
 	}
-	content, err := contextualProposalResponse(response, request.Inputs["candidates"].Content)
-	if err != nil {
-		return contracts.StructuredCompletionResponse{}, err
-	}
+	content := []byte(response)
 	if err := json.Unmarshal(content, output); err != nil {
 		return contracts.StructuredCompletionResponse{}, err
 	}
 	return contracts.StructuredCompletionResponse{Content: content}, nil
 }
 
-func contextualProposalResponse(response string, candidateContent []byte) ([]byte, error) {
-	if !strings.Contains(response, "candidate-") {
-		return []byte(response), nil
-	}
-	var selection struct {
-		DuplicateGroups []struct {
-			Members   []string `json:"members"`
-			Canonical string   `json:"canonical"`
-		} `json:"duplicate_groups"`
-	}
-	if err := json.Unmarshal([]byte(response), &selection); err != nil {
-		return nil, err
-	}
-	var candidates struct {
-		Candidates []entityreconcile.Selector `json:"candidates"`
-	}
-	if err := json.Unmarshal(candidateContent, &candidates); err != nil {
-		return nil, err
-	}
-	selector := func(key string) entityreconcile.Selector {
-		index, err := strconv.Atoi(strings.TrimPrefix(key, "candidate-"))
-		if err != nil || index < 1 || index > len(candidates.Candidates) {
-			return entityreconcile.Selector{Name: key, SourceRefs: []entityreconcile.SourceRange{}}
-		}
-		return candidates.Candidates[index-1].Clone()
-	}
-	proposal := entityreconcile.ProposalResponse{DuplicateGroups: make([]entityreconcile.DuplicateGroup, len(selection.DuplicateGroups))}
-	for index, group := range selection.DuplicateGroups {
-		members := make([]entityreconcile.Selector, len(group.Members))
-		for memberIndex, key := range group.Members {
-			members[memberIndex] = selector(key)
-		}
-		proposal.DuplicateGroups[index] = entityreconcile.DuplicateGroup{Members: members, Canonical: selector(group.Canonical)}
-	}
-	return json.Marshal(proposal)
-}
-
 func newNormalizer(t *testing.T, client contracts.StructuredLLMClient) *Normalizer {
 	t.Helper()
 	normalizer, err := New(client, Options{})
@@ -214,7 +180,10 @@ func newNormalizer(t *testing.T, client contracts.StructuredLLMClient) *Normaliz
 }
 
 func normalizeRequest(value dnd.NPCRegistry) contracts.TypedNormalizeRequest[dnd.NPCRegistry] {
-	return contracts.TypedNormalizeRequest[dnd.NPCRegistry]{MergeOutput: contracts.MergeArtifact[dnd.NPCRegistry]{Value: value}}
+	return contracts.TypedNormalizeRequest[dnd.NPCRegistry]{
+		Source:      &source.SourceDocument{},
+		MergeOutput: contracts.MergeArtifact[dnd.NPCRegistry]{Value: value},
+	}
 }
 
 func normalizeRequestWithSource(value dnd.NPCRegistry, doc *source.SourceDocument) contracts.TypedNormalizeRequest[dnd.NPCRegistry] {
@@ -231,3 +200,12 @@ func hasWarning(warnings []contracts.Warning, reason, scope string) bool {
 	}
 	return false
 }
+
+func hasFingerprint(fingerprints []pipeline.CheckpointFingerprint, name string) bool {
+	for _, fingerprint := range fingerprints {
+		if fingerprint.Name == name && fingerprint.Value != "" {
+			return true
+		}
+	}
+	return false
+}

internal/modules/dnd/normalize/npcregistry/prompt_assets.go

@@ -8,23 +8,26 @@ import (
 	rootassets "gitea.maximumdirect.net/eric/notarius/assets"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/promptfs"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 )
 
 const promptAssetRoot = "assets/prompts"
 
-var promptAssetManifest = shared.PromptAssetManifest{
+func promptAssetManifest() (shared.PromptAssetManifest, error) {
+	sharedFiles, err := semanticreconcile.SharedPromptFiles()
+	if err != nil {
+		return shared.PromptAssetManifest{}, fmt.Errorf("load shared semantic reconciliation prompt assets: %w", err)
+	}
+	return shared.PromptAssetManifest{
 		ModuleDir: PromptID,
 		ModuleFiles: []promptfs.ModulePromptFile{
 			{Name: "prompt.yaml", Path: "prompts/prompt.yaml"},
 			{Name: "instructions.md", Path: "prompts/instructions.md"},
-		{Name: "candidates.md", Path: "prompts/candidates.md"},
-	},
-	SharedFiles: []string{
-		"common-dnd-system.md",
-		"common-dnd-entity-reconciliation.md",
-		"common-dnd-transcript-windows.md",
 		},
+		SharedFiles:         []string{"common-dnd-system.md"},
+		ExternalSharedFiles: sharedFiles,
+	}, nil
 }
 
 func moduleAssetFS() (fs.FS, error) {
@@ -40,7 +43,11 @@ func RegisterPromptAssets(registry *llm.AssetRegistry) error {
 	if err != nil {
 		return err
 	}
-	promptFS, err := promptAssetManifest.PromptFS(assets)
+	manifest, err := promptAssetManifest()
+	if err != nil {
+		return err
+	}
+	promptFS, err := manifest.PromptFS(assets)
 	if err != nil {
 		return fmt.Errorf("prepare NPC normalization prompt assets: %w", err)
 	}
@@ -54,7 +61,12 @@ func promptAssetMetadata() (string, error) {
 			promptAssetHashErr = err
 			return
 		}
-		promptAssetHash, promptAssetHashErr = promptAssetManifest.Hash(assets)
+		manifest, err := promptAssetManifest()
+		if err != nil {
+			promptAssetHashErr = err
+			return
+		}
+		promptAssetHash, promptAssetHashErr = manifest.Hash(assets)
 	})
 	return promptAssetHash, promptAssetHashErr
 }

internal/modules/dnd/normalize/npcregistry/prompt_assets_test.go

@@ -7,7 +7,7 @@ import (
 	"time"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/promptkit"
 )
 
@@ -16,8 +16,8 @@ func TestRegisterPromptAssetsPreparesNormalizationPrompt(t *testing.T) {
 		t.Fatalf("promptAssetMetadata() = %q, %v; want prompt fingerprint", promptHash, err)
 	}
 	registry := llm.NewAssetRegistry()
-	if err := entityreconcile.RegisterSchemaAssets(registry); err != nil {
-		t.Fatalf("RegisterSchemaAssets() error = %v", err)
+	if err := semanticreconcile.RegisterAssets(registry); err != nil {
+		t.Fatalf("RegisterAssets() error = %v", err)
 	}
 	if err := RegisterPromptAssets(registry); err != nil {
 		t.Fatalf("RegisterPromptAssets() error = %v", err)
@@ -34,21 +34,27 @@ func TestRegisterPromptAssetsPreparesNormalizationPrompt(t *testing.T) {
 		t.Fatalf("NewEngine() error = %v", err)
 	}
 	prepared, err := engine.Prepare(context.Background(), promptkit.RunRequest{
-		PromptID: PromptID, PromptVersion: entityreconcile.SchemaVersion, ProfileID: "normalize-test-profile",
+		PromptID: PromptID, PromptVersion: PromptVersion, ProfileID: "normalize-test-profile",
 		Inputs: map[string]promptkit.ArtifactRef{
-			"candidates": promptkit.Inline(`{"candidates":[{"name":"Mira","source_refs":[{"start_unit_id":1,"end_unit_id":1}]}]}`),
+			"candidates": promptkit.Inline(`{"candidates":[{"candidate_id":1,"label":"Mira","source_refs":[{"start_unit_id":1,"end_unit_id":1}]}]}`),
 			"transcript": promptkit.Inline(`{"windows":[{"units":[]}]}`),
 		},
 	})
 	if err != nil {
 		t.Fatalf("Prepare() error = %v", err)
 	}
-	if prepared.PromptID != PromptID || prepared.OutputContract.SchemaPath != "dnd_entity_reconcile_llm.v1.json" {
+	if prepared.PromptID != PromptID || prepared.OutputContract.SchemaPath != "semantic_reconciliation_llm.v1.json" {
 		t.Fatalf("prepared prompt = %#v, want normalization prompt identity and schema", prepared)
 	}
 	if prepared.Messages[0].Role != "system" {
 		t.Fatalf("initial message role = %q, want system", prepared.Messages[0].Role)
 	}
+	if !strings.Contains(prepared.Messages[1].Content, "candidate_id") || !strings.Contains(prepared.Messages[1].Content, "integer") {
+		t.Fatalf("protocol message = %q, want shared integer-handle protocol", prepared.Messages[1].Content)
+	}
+	if !strings.Contains(prepared.Messages[2].Content, "same individual") || strings.Contains(prepared.Messages[2].Content, "source ranges") {
+		t.Fatalf("NPC policy message = %q, want domain distinctions without copied ranges", prepared.Messages[2].Content)
+	}
 	for _, index := range []int{2, 4} {
 		if cache := prepared.Messages[index].CacheControl; cache == nil || cache.Type != promptkit.CacheControlEphemeral {
 			t.Errorf("message %d cache control = %#v, want ephemeral", index, cache)

internal/modules/dnd/normalize/npcregistry/reconciliation.go

@@ -4,118 +4,76 @@ import (
 	"fmt"
 
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
+	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/npcs/identity"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 )
 
-const semanticContextRadius = 2
-
-type safeReconciliationGroup struct {
-	members   []int
-	canonical int
-}
-
-func reconciliationCandidates(records []normalizedRecord) []entityreconcile.Candidate {
-	candidates := make([]entityreconcile.Candidate, len(records))
+func reconciliationInputs(records []normalizedRecord) ([]semanticreconcile.Candidate, []semanticreconcile.Record[dnd.NPC], error) {
+	candidates := make([]semanticreconcile.Candidate, len(records))
+	envelopes := make([]semanticreconcile.Record[dnd.NPC], len(records))
 	for index, record := range records {
-		candidates[index] = entityreconcile.Candidate{
-			Name:       record.npc.Name,
+		candidates[index] = semanticreconcile.Candidate{
+			Label:      record.npc.Name,
 			SourceRefs: cloneSourceRefs(record.npc.SourceRefs),
 		}
+		envelope, err := semanticreconcile.NewRecord(record.npc, record.inputIndexes, record.earliest, cloneNPC)
+		if err != nil {
+			return nil, nil, fmt.Errorf("record %d: %w", index, err)
 		}
-	return candidates
+		envelopes[index] = envelope
+	}
+	return candidates, envelopes, nil
 }
 
-func reconciliationGroups(assessment entityreconcile.Assessment, candidateKeys []string) []safeReconciliationGroup {
-	positions := make(map[string]int, len(candidateKeys))
-	for index, key := range candidateKeys {
-		positions[key] = index
+func applyReconciliationPlan(plan semanticreconcile.Plan, records []normalizedRecord, envelopes []semanticreconcile.Record[dnd.NPC], order shared.SourceRefOrder) ([]normalizedRecord, []contracts.Warning, error) {
+	application, err := semanticreconcile.ApplyPlan(plan, envelopes, semanticreconcile.ApplicationPolicy[dnd.NPC]{
+		CloneValue: cloneNPC,
+		ConsolidateGroup: func(members []dnd.NPC, canonical dnd.NPC) (dnd.NPC, error) {
+			output := cloneNPC(canonical)
+			output.SourceRefs = nil
+			for _, member := range members {
+				output.SourceRefs = append(output.SourceRefs, member.SourceRefs...)
 			}
-	safeGroups := assessment.SafeGroups()
-	groups := make([]safeReconciliationGroup, 0, len(safeGroups))
-	for _, group := range safeGroups {
-		members := group.Members()
-		memberPositions := make([]int, len(members))
-		valid := true
-		for index, key := range members {
-			position, ok := positions[key]
-			if !ok {
-				valid = false
-				break
+			output.SourceRefs = order.Canonicalize(output.SourceRefs)
+			output.ID = identity.DeriveID(output.Name)
+			return output, nil
+		},
+	})
+	if err != nil {
+		return nil, nil, err
 	}
-			memberPositions[index] = position
+
+	applied := application.Records()
+	output := make([]normalizedRecord, len(applied))
+	for index, record := range applied {
+		output[index] = normalizedRecord{
+			npc:          record.Value(),
+			inputIndexes: record.OriginalInputIndexes(),
+			earliest:     record.EarliestInputPosition(),
 		}
-		canonical, ok := positions[group.Canonical()]
-		if !valid || !ok {
-			continue
 	}
-		groups = append(groups, safeReconciliationGroup{members: memberPositions, canonical: canonical})
+	warnings := make([]contracts.Warning, 0, len(application.AppliedGroups()))
+	for _, event := range application.AppliedGroups() {
+		provenance := event.Provenance()
+		warnings = append(warnings, semanticDuplicateWarning(provenance, records[provenance.CanonicalPosition()]))
 	}
-	return groups
+	return output, warnings, nil
 }
 
-func reconciliationIssues(assessment entityreconcile.Assessment) []string {
-	issues := assessment.Issues()
-	details := make([]string, len(issues))
-	for index, issue := range issues {
-		details[index] = fmt.Sprintf("group %d: %s", issue.GroupIndex, issue.Category)
-	}
-	return details
-}
-
-func applySafeGroups(records []normalizedRecord, groups []safeReconciliationGroup, order shared.SourceRefOrder) ([]normalizedRecord, []contracts.Warning) {
-	byMember := make(map[int]safeReconciliationGroup, len(groups)*2)
-	for _, group := range groups {
-		for _, member := range group.members {
-			byMember[member] = group
-		}
-	}
-	output := make([]normalizedRecord, 0, len(records)-len(groups))
-	warnings := make([]contracts.Warning, 0, len(groups))
-	for index, record := range records {
-		group, grouped := byMember[index]
-		if !grouped {
-			output = append(output, cloneRecord(record))
-			continue
-		}
-		if group.members[0] != index {
-			continue
-		}
-		consolidated := consolidateSemanticGroup(records, group, order)
-		output = append(output, consolidated)
-		warnings = append(warnings, semanticDuplicateWarning(consolidated, records[group.canonical]))
-	}
-	return output, warnings
-}
-
-func consolidateSemanticGroup(records []normalizedRecord, group safeReconciliationGroup, order shared.SourceRefOrder) normalizedRecord {
-	output := cloneRecord(records[group.members[0]])
-	output.npc.Name = records[group.canonical].npc.Name
-	for _, member := range group.members[1:] {
-		output.npc.SourceRefs = append(output.npc.SourceRefs, records[member].npc.SourceRefs...)
-		output.inputIndexes = append(output.inputIndexes, records[member].inputIndexes...)
-		if records[member].earliest < output.earliest {
-			output.earliest = records[member].earliest
-		}
-	}
-	output.inputIndexes = sortedUniqueIndexes(output.inputIndexes)
-	output.npc.SourceRefs = order.Canonicalize(output.npc.SourceRefs)
-	output.npc.ID = identity.DeriveID(output.npc.Name)
-	return output
-}
-
-func semanticDuplicateWarning(record normalizedRecord, canonical normalizedRecord) contracts.Warning {
-	details := make([]string, 0, len(record.inputIndexes)+1)
-	for _, inputIndex := range record.inputIndexes {
+func semanticDuplicateWarning(provenance semanticreconcile.GroupProvenance, canonical normalizedRecord) contracts.Warning {
+	inputIndexes := provenance.OriginalInputIndexes()
+	details := make([]string, 0, len(inputIndexes)+1)
+	for _, inputIndex := range inputIndexes {
 		details = append(details, fmt.Sprintf("input index %d", inputIndex))
 	}
-	if canonical.earliest != record.earliest {
+	if canonical.earliest != provenance.EarliestInputPosition() {
 		details = append(details, fmt.Sprintf("canonical display name from input index %d", canonical.earliest))
 	}
 	return contracts.Warning{
-		Scope:      npcScope(record.earliest),
+		Scope:      npcScope(provenance.EarliestInputPosition()),
 		ReasonCode: ReasonCodeDuplicateNPCCollapsed,
 		Message:    diagnostics.Aggregate("semantic duplicate consolidation", details),
 	}

internal/modules/dnd/normalize/npcregistry/semantic_normalizer_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"math"
 	"reflect"
 	"strings"
@@ -11,9 +12,10 @@ import (
 
 	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/npcs/identity"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
+	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/diagnostics"
 )
 
 func TestNormalizeSkipsSemanticCompletionWithoutTwoEligibleCandidates(t *testing.T) {
@@ -31,7 +33,7 @@ func TestNormalizeSkipsSemanticCompletionWithoutTwoEligibleCandidates(t *testing
 }
 
 func TestNormalizeAppliesSafeProposalAndUsesPrivateInputs(t *testing.T) {
-	client := &recordingNPCNormalizerClient{response: `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"}]}`}
+	client := &recordingNPCNormalizerClient{response: `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2}]}`}
 	normalizer := newNormalizer(t, client)
 	doc := semanticDocument()
 	input := dnd.NPCRegistry{NPCs: []dnd.NPC{
@@ -64,17 +66,28 @@ func TestNormalizeAppliesSafeProposalAndUsesPrivateInputs(t *testing.T) {
 		t.Fatalf("completion calls = %d, want one", len(client.requests))
 	}
 	completion := client.requests[0]
-	if completion.StageName != Key || completion.PromptID != PromptID || completion.PromptVersion != entityreconcile.SchemaVersion || completion.ProfileID != request.LLMProfile || completion.SessionID != request.SessionID || len(completion.Inputs) != 2 {
+	if completion.StageName != Key || completion.PromptID != PromptID || completion.PromptVersion != PromptVersion || completion.ProfileID != request.LLMProfile || completion.SessionID != request.SessionID || len(completion.Inputs) != 2 {
 		t.Fatalf("completion request = %#v, want normalize request identity and exactly two inputs", completion)
 	}
 	encoded := string(completion.Inputs["candidates"].Content) + string(completion.Inputs["transcript"].Content)
 	if strings.Contains(encoded, "npc:sha256:") || strings.Contains(encoded, doc.ID) {
 		t.Fatalf("completion inputs leaked private identifiers: %s", encoded)
 	}
+	var visible struct {
+		Candidates []struct {
+			CandidateID int `json:"candidate_id"`
+		} `json:"candidates"`
+	}
+	if err := json.Unmarshal(completion.Inputs["candidates"].Content, &visible); err != nil {
+		t.Fatalf("decode candidates: %v", err)
+	}
+	if got := []int{visible.Candidates[0].CandidateID, visible.Candidates[1].CandidateID, visible.Candidates[2].CandidateID}; !reflect.DeepEqual(got, []int{1, 2, 3}) {
+		t.Fatalf("candidate IDs = %v, want contiguous request-local handles", got)
+	}
 }
 
 func TestNormalizeUnsafeProposalReturnsSafeRetryFallback(t *testing.T) {
-	client := &recordingNPCNormalizerClient{response: `{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"},{"members":["candidate-000003","unknown"],"canonical":"candidate-000003"}]}`}
+	client := &recordingNPCNormalizerClient{response: `{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2},{"candidate_ids":[3,99],"canonical_candidate_id":3}]}`}
 	normalizer := newNormalizer(t, client)
 	doc := semanticDocument()
 	input := dnd.NPCRegistry{NPCs: []dnd.NPC{
@@ -137,7 +150,7 @@ func TestNormalizeRedactsContextMaterialFailures(t *testing.T) {
 	request := normalizeRequestWithSource(input, doc)
 	request.SourceInput = contracts.NewLLMInputMaterial("source", "application/json", []byte(transcript), "sha256:test", originPath)
 	_, err := normalizer.Normalize(context.Background(), request)
-	if err == nil || !strings.Contains(err.Error(), "build entity reconciliation context: invalid source metadata") {
+	if err == nil || !strings.Contains(err.Error(), "build transcript material: invalid source metadata") {
 		t.Fatalf("Normalize() error = %v; want content-safe context-material failure", err)
 	}
 	for _, forbidden := range []string{metadataKey, metadataValue, transcript, firstName, secondName, sourceID, originPath, "float64", "non-finite"} {
@@ -152,8 +165,8 @@ func TestNormalizeRedactsContextMaterialFailures(t *testing.T) {
 
 func TestNormalizeDoesNotAccumulateSafeGroupsAcrossAttempts(t *testing.T) {
 	client := &recordingNPCNormalizerClient{responses: []string{
-		`{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"},{"members":["candidate-000003","unknown"],"canonical":"candidate-000003"}]}`,
-		`{"duplicate_groups":[{"members":["candidate-000001","candidate-000003"],"canonical":"candidate-000003"}]}`,
+		`{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2},{"candidate_ids":[3,99],"canonical_candidate_id":3}]}`,
+		`{"duplicate_groups":[{"candidate_ids":[1,3],"canonical_candidate_id":3}]}`,
 	}}
 	normalizer := newNormalizer(t, client)
 	doc := semanticDocument()
@@ -175,8 +188,8 @@ func TestNormalizeDoesNotAccumulateSafeGroupsAcrossAttempts(t *testing.T) {
 	}
 }
 
-func TestNormalizeRetainsRecordsWhenAProposalUsesAnUnknownDescriptor(t *testing.T) {
-	client := &recordingNPCNormalizerClient{response: `{"duplicate_groups":[{"members":["candidate-000001","unknown"],"canonical":"candidate-000001"}]}`}
+func TestNormalizeRetainsRecordsWhenAProposalUsesAnUnknownHandle(t *testing.T) {
+	client := &recordingNPCNormalizerClient{response: `{"duplicate_groups":[{"candidate_ids":[1,99],"canonical_candidate_id":1}]}`}
 	normalizer := newNormalizer(t, client)
 	doc := semanticDocument()
 	input := dnd.NPCRegistry{NPCs: []dnd.NPC{
@@ -193,32 +206,52 @@ func TestNormalizeRetainsRecordsWhenAProposalUsesAnUnknownDescriptor(t *testing.
 	}
 }
 
-func TestReconciliationCandidatesKeepEqualDisplayNamesDistinct(t *testing.T) {
+func TestReconciliationCandidatesKeepEqualContextualDescriptorsDistinct(t *testing.T) {
 	doc := semanticDocument()
 	records := []normalizedRecord{
 		{npc: dnd.NPC{Name: "The Guard", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 10, EndUnitID: 10}}}},
 		{npc: dnd.NPC{Name: "The Guard", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 20, EndUnitID: 20}}}},
 	}
-	materials, ready, err := entityreconcile.BuildContext(doc, reconciliationCandidates(records), semanticContextRadius)
-	if err != nil || !ready {
-		t.Fatalf("BuildContext() = %#v, %t, %v; want ready keyed candidates", materials, ready, err)
+	candidates, _, err := reconciliationInputs(records)
+	if err != nil {
+		t.Fatalf("reconciliationInputs() error = %v", err)
 	}
-	keys := materials.CandidateKeys()
-	if !reflect.DeepEqual(keys, []string{"candidate-000001", "candidate-000002"}) || strings.Count(string(materials.Candidates.Content), `"The Guard"`) != 2 {
-		t.Fatalf("candidate keys and inputs = %#v, %s; want distinct equal-display candidates", keys, materials.Candidates.Content)
+	preparation, err := semanticreconcile.Prepare(doc, candidates, semanticreconcile.DefaultLimits())
+	if err != nil || preparation.Disposition() != semanticreconcile.Ready {
+		t.Fatalf("Prepare() = %#v, %v; want ready candidates", preparation, err)
 	}
 	var candidateInput struct {
-		Candidates []entityreconcile.Selector `json:"candidates"`
+		Candidates []struct {
+			CandidateID int    `json:"candidate_id"`
+			Label       string `json:"label"`
+		} `json:"candidates"`
 	}
-	if err := json.Unmarshal(materials.Candidates.Content, &candidateInput); err != nil {
+	if err := json.Unmarshal(preparation.Materials()["candidates"].Content, &candidateInput); err != nil {
 		t.Fatal(err)
 	}
-	assessment := materials.Assess(entityreconcile.ProposalResponse{DuplicateGroups: []entityreconcile.DuplicateGroup{{
-		Members: candidateInput.Candidates, Canonical: candidateInput.Candidates[1],
-	}}})
-	groups := reconciliationGroups(assessment, keys)
-	if assessment.DiscardedGroups() != 0 || len(groups) != 1 || groups[0].canonical != 1 {
-		t.Fatalf("reconciliation = %#v, %#v; want distinct keyed group", assessment, groups)
+	if len(candidateInput.Candidates) != 2 || candidateInput.Candidates[0].CandidateID != 1 || candidateInput.Candidates[1].CandidateID != 2 || candidateInput.Candidates[0].Label != "The Guard" || candidateInput.Candidates[1].Label != "The Guard" {
+		t.Fatalf("candidate input = %#v, want distinct integer handles for equal descriptors", candidateInput)
+	}
+}
+
+func TestNormalizeLimitSkipDoesNotCallLLMAndAddsBoundedFallbackWarning(t *testing.T) {
+	client := &recordingNPCNormalizerClient{}
+	normalizer := newNormalizer(t, client)
+	doc := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{{ID: 1, Kind: "speech", Text: "A crowded hall"}}}
+	limit := semanticreconcile.DefaultLimits().MaximumCandidates
+	input := dnd.NPCRegistry{NPCs: make([]dnd.NPC, limit+1)}
+	for index := range input.NPCs {
+		input.NPCs[index] = dnd.NPC{Name: fmt.Sprintf("Person %d", index), SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 1, EndUnitID: 1}}}
+	}
+	result, err := normalizer.Normalize(context.Background(), normalizeRequestWithSource(input, doc))
+	if err != nil || result.Retry != nil {
+		t.Fatalf("Normalize() = %#v, %v; want deterministic limit fallback", result, err)
+	}
+	if len(client.requests) != 0 || len(result.Value.NPCs) != limit+1 {
+		t.Fatalf("completion calls = %d, NPCs = %d; want no call and all records", len(client.requests), len(result.Value.NPCs))
+	}
+	if !hasWarning(result.Warnings, ReasonCodeNPCSemanticReconciliationExhausted, "npcs") || len(result.Warnings) > diagnostics.MaxWarnings {
+		t.Fatalf("warnings = %#v, want bounded reconciliation fallback", result.Warnings)
 	}
 }
 

internal/modules/dnd/register/modules.go

@@ -35,7 +35,6 @@ import (
 	npcnormalize "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/normalize/npcregistry"
 	scenedescriptionnormalize "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/normalize/scenedescriptions"
 	spellnormalize "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/normalize/spells"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/generic/merge/appendorder"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/generic/normalize/noop"
 )
@@ -147,7 +146,6 @@ func registerModules(registries pipeline.Registries) error {
 
 func registerPromptAssets(assets *llm.AssetRegistry) error {
 	return runRegistrations([]registration{
-		{name: "entity reconciliation schema assets", register: func() error { return entityreconcile.RegisterSchemaAssets(assets) }},
 		{name: "scenes prompt assets", register: func() error { return scenes.RegisterPromptAssets(assets) }},
 		{name: "spells prompt assets", register: func() error { return spellextract.RegisterPromptAssets(assets) }},
 		{name: "npc registry prompt assets", register: func() error { return npcextract.RegisterPromptAssets(assets) }},

internal/modules/dnd/register/register_test.go

@@ -77,13 +77,6 @@ func TestRegisterAddsDNDFamily(t *testing.T) {
 	if _, err := fs.ReadFile(fallbackFS, "dnd-extraction.yaml"); err != nil {
 		t.Fatalf("fallback profile asset = %v, want registered D&D profile", err)
 	}
-	schemaFS, err := assets.SchemaFS()
-	if err != nil {
-		t.Fatalf("SchemaFS() error = %v", err)
-	}
-	if _, err := fs.ReadFile(schemaFS, "dnd_entity_reconcile_llm.v1.json"); err != nil {
-		t.Fatalf("entity reconciliation schema asset = %v, want registered shared schema", err)
-	}
 	assertContainsKeys(t, "chunkers", registries.Chunkers.RegisteredKeys(), []string{"dnd/scenes"})
 	assertContainsKeys(t, "extractors", registries.Extractors.RegisteredKeys(), []string{"dnd/spells", npcextract.Key, combatextract.Key, enemyeventextract.Key, itemoccurrenceextract.Key, itemregistryextract.Key, occurrenceextract.Key, scenedescriptionextract.Key, locationextract.Key, locationoccurrenceextract.Key})
 	assertContainsKeys(t, "normalizers", registries.Normalizers.RegisteredKeys(), []string{spellnormalize.Key, npcnormalize.Key, combatnormalize.Key, enemyeventnormalize.Key, itemoccurrencenormalize.Key, itemregistrynormalize.Key, occurrencenormalize.Key, scenedescriptionnormalize.Key, locationnormalize.Key, locationoccurrencenormalize.Key, pipeline.DefaultNormalizeModule})

internal/modules/dnd/shared/assets.go

@@ -11,12 +11,14 @@ import (
 )
 
 // PromptAssetManifest is the ordered set of assets that make up one prompt.
-// Module files are addressed in the owning module filesystem; shared files use
-// the names in sharedPromptPaths and are mounted beneath sharedassets.
+// Module files are addressed in the owning module filesystem. SharedFiles use
+// names in sharedPromptPaths, while ExternalSharedFiles are explicit
+// caller-owned descriptors. Both kinds are mounted beneath sharedassets.
 type PromptAssetManifest struct {
 	ModuleDir           string
 	ModuleFiles         []promptfs.ModulePromptFile
 	SharedFiles         []string
+	ExternalSharedFiles []promptfs.SharedPromptFile
 }
 
 var sharedPromptPaths = map[string]string{
@@ -25,10 +27,8 @@ var sharedPromptPaths = map[string]string{
 	"common-dnd-identity.md":            "prompts/common-dnd-identity.md",
 	"common-dnd-transcript-full.md":     "prompts/common-dnd-transcript-full.md",
 	"common-dnd-transcript-chunk.md":    "prompts/common-dnd-transcript-chunk.md",
-	"common-dnd-transcript-windows.md":    "prompts/common-dnd-transcript-windows.md",
 	"common-dnd-references.md":          "prompts/common-dnd-references.md",
 	"common-dnd-npc-registry.md":        "prompts/common-dnd-npc-registry.md",
-	"common-dnd-entity-reconciliation.md": "prompts/common-dnd-entity-reconciliation.md",
 }
 
 func sharedAssetFS() (fs.FS, error) {
@@ -40,7 +40,7 @@ func sharedAssetFS() (fs.FS, error) {
 }
 
 func (manifest PromptAssetManifest) PromptFS(moduleFS fs.FS) (fs.FS, error) {
-	sharedFiles, err := resolveSharedPromptFiles(manifest.SharedFiles)
+	sharedFiles, err := manifest.sharedPromptFiles()
 	if err != nil {
 		return nil, err
 	}
@@ -49,10 +49,14 @@ func (manifest PromptAssetManifest) PromptFS(moduleFS fs.FS) (fs.FS, error) {
 }
 
 func (manifest PromptAssetManifest) Hash(moduleFS fs.FS) (string, error) {
-	sharedFiles, err := resolveSharedPromptFiles(manifest.SharedFiles)
+	sharedFiles, err := manifest.sharedPromptFiles()
 	if err != nil {
 		return "", err
 	}
+	moduleFiles := append([]promptfs.ModulePromptFile(nil), manifest.ModuleFiles...)
+	if _, err := promptfs.ModulePromptFS(manifest.ModuleDir, moduleFS, moduleFiles, sharedFiles...); err != nil {
+		return "", err
+	}
 	parts := make([]llm.AssetHashPart, 0, len(manifest.ModuleFiles)+len(sharedFiles))
 	for _, file := range manifest.ModuleFiles {
 		parts = append(parts, llm.AssetHashPart{FS: moduleFS, Path: file.Path})
@@ -63,6 +67,14 @@ func (manifest PromptAssetManifest) Hash(moduleFS fs.FS) (string, error) {
 	return llm.HashAssets(parts)
 }
 
+func (manifest PromptAssetManifest) sharedPromptFiles() ([]promptfs.SharedPromptFile, error) {
+	files, err := resolveSharedPromptFiles(manifest.SharedFiles)
+	if err != nil {
+		return nil, err
+	}
+	return append(files, manifest.ExternalSharedFiles...), nil
+}
+
 func resolveSharedPromptFiles(names []string) ([]promptfs.SharedPromptFile, error) {
 	assets, err := sharedAssetFS()
 	if err != nil {

internal/modules/dnd/shared/assets_test.go

@@ -22,7 +22,6 @@ func TestPromptAssetManifestPromptFS(t *testing.T) {
 			"common-dnd-system.md",
 			"common-dnd-transcript-full.md",
 			"common-dnd-transcript-chunk.md",
-			"common-dnd-transcript-windows.md",
 		},
 	}
 
@@ -51,7 +50,6 @@ func TestPromptAssetManifestPromptFS(t *testing.T) {
 		"assets/prompts/dnd.test/sharedassets/common-dnd-system.md",
 		"assets/prompts/dnd.test/sharedassets/common-dnd-transcript-full.md",
 		"assets/prompts/dnd.test/sharedassets/common-dnd-transcript-chunk.md",
-		"assets/prompts/dnd.test/sharedassets/common-dnd-transcript-windows.md",
 	} {
 		content, err := fs.ReadFile(fsys, path)
 		if err != nil {
@@ -207,3 +205,106 @@ func TestSharedPromptDescriptorsReturnFreshCopies(t *testing.T) {
 		t.Fatalf("resolveSharedPromptFiles() reused descriptor state: first=%#v second=%#v", first, second)
 	}
 }
+
+func TestPromptAssetManifestMountsExternalSharedFiles(t *testing.T) {
+	external := fstest.MapFS{"core/protocol.md": {Data: []byte("integer protocol")}}
+	manifest := PromptAssetManifest{
+		ModuleDir: "dnd.test",
+		ModuleFiles: []promptfs.ModulePromptFile{
+			{Name: "prompt.yaml", Path: "prompts/prompt.yaml"},
+		},
+		ExternalSharedFiles: []promptfs.SharedPromptFile{
+			{Name: "protocol.md", FS: external, Path: "core/protocol.md"},
+		},
+	}
+	fys, err := manifest.PromptFS(fstest.MapFS{
+		"prompts/prompt.yaml": {Data: []byte("id: dnd.test")},
+	})
+	if err != nil {
+		t.Fatalf("PromptFS() error = %v, want nil", err)
+	}
+	content, err := fs.ReadFile(fys, "assets/prompts/dnd.test/sharedassets/protocol.md")
+	if err != nil || string(content) != "integer protocol" {
+		t.Fatalf("mounted external protocol = %q, %v", content, err)
+	}
+}
+
+func TestPromptAssetManifestHashIncludesExternalSharedFiles(t *testing.T) {
+	moduleFS := fstest.MapFS{"prompts/prompt.yaml": {Data: []byte("id: dnd.test")}}
+	external := fstest.MapFS{"core/protocol.md": {Data: []byte("integer protocol")}}
+	manifest := PromptAssetManifest{
+		ModuleDir: "dnd.test",
+		ModuleFiles: []promptfs.ModulePromptFile{
+			{Name: "prompt.yaml", Path: "prompts/prompt.yaml"},
+		},
+		ExternalSharedFiles: []promptfs.SharedPromptFile{
+			{Name: "protocol.md", FS: external, Path: "core/protocol.md"},
+		},
+	}
+	got, err := manifest.Hash(moduleFS)
+	if err != nil {
+		t.Fatalf("Hash() error = %v, want nil", err)
+	}
+	want, err := llm.HashAssets([]llm.AssetHashPart{
+		{FS: moduleFS, Path: "prompts/prompt.yaml"},
+		{FS: external, Path: "core/protocol.md"},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != want {
+		t.Fatalf("Hash() = %q, want external-aware hash %q", got, want)
+	}
+}
+
+func TestPromptAssetManifestRejectsInvalidExternalSharedFiles(t *testing.T) {
+	moduleFS := fstest.MapFS{"prompts/prompt.yaml": {Data: []byte("id: dnd.test")}}
+	tests := []struct {
+		name     string
+		external []promptfs.SharedPromptFile
+		shared   []string
+		want     string
+	}{
+		{
+			name: "missing",
+			external: []promptfs.SharedPromptFile{
+				{Name: "protocol.md", FS: fstest.MapFS{}, Path: "core/protocol.md"},
+			},
+			want: "read shared prompt asset core/protocol.md",
+		},
+		{
+			name: "duplicate external destinations",
+			external: []promptfs.SharedPromptFile{
+				{Name: "protocol.md", FS: fstest.MapFS{"a.md": {Data: []byte("a")}}, Path: "a.md"},
+				{Name: " protocol.md ", FS: fstest.MapFS{"b.md": {Data: []byte("b")}}, Path: "b.md"},
+			},
+			want: `duplicate sharedassets prompt destination "assets/prompts/dnd.test/sharedassets/protocol.md"`,
+		},
+		{
+			name:   "duplicate named and external destinations",
+			shared: []string{"common-dnd-system.md"},
+			external: []promptfs.SharedPromptFile{
+				{Name: "common-dnd-system.md", FS: fstest.MapFS{"system.md": {Data: []byte("external")}}, Path: "system.md"},
+			},
+			want: `duplicate sharedassets prompt destination "assets/prompts/dnd.test/sharedassets/common-dnd-system.md"`,
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			manifest := PromptAssetManifest{
+				ModuleDir: "dnd.test",
+				ModuleFiles: []promptfs.ModulePromptFile{
+					{Name: "prompt.yaml", Path: "prompts/prompt.yaml"},
+				},
+				SharedFiles:         test.shared,
+				ExternalSharedFiles: test.external,
+			}
+			if _, err := manifest.PromptFS(moduleFS); err == nil || !strings.Contains(err.Error(), test.want) {
+				t.Fatalf("PromptFS() error = %v, want %q", err, test.want)
+			}
+			if _, err := manifest.Hash(moduleFS); err == nil || !strings.Contains(err.Error(), test.want) {
+				t.Fatalf("Hash() error = %v, want %q", err, test.want)
+			}
+		})
+	}
+}

internal/modules/dnd/shared/entityreconcile/context.go

@@ -1,292 +0,0 @@
-// Package entityreconcile provides safe, D&D-specific duplicate proposal
-// materials shared by entity normalizers.
-package entityreconcile
-
-import (
-	"crypto/sha256"
-	"encoding/hex"
-	"encoding/json"
-	"fmt"
-	"sort"
-
-	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
-	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
-)
-
-const candidateKeyFormat = "candidate-%06d"
-
-// Candidate is one domain-neutral entity candidate supplied by a normalizer.
-// BuildContext never retains or mutates its source references.
-type Candidate struct {
-	Name       string
-	SourceRefs []source.SourceRef
-}
-
-// Selector identifies one candidate through its canonical name and source-free
-// evidence ranges. It is the complete model-facing candidate descriptor.
-type Selector struct {
-	Name       string        `json:"name"`
-	SourceRefs []SourceRange `json:"source_refs"`
-}
-
-// Clone returns an owned copy of the selector.
-func (s Selector) Clone() Selector {
-	s.SourceRefs = cloneSourceRanges(s.SourceRefs)
-	return s
-}
-
-// SourceRange is a source-free evidence coordinate used in a selector.
-type SourceRange struct {
-	StartUnitID int `json:"start_unit_id"`
-	EndUnitID   int `json:"end_unit_id"`
-}
-
-// Materials contains owned prompt inputs and opaque candidate-key mappings.
-type Materials struct {
-	Candidates contracts.LLMInputMaterial
-	Transcript contracts.LLMInputMaterial
-
-	candidateKeys     []string
-	eligible          map[string]struct{}
-	keyBySelector     map[string]string
-	collidedSelectors map[string]struct{}
-}
-
-// CandidateKeys returns all deterministic keys in candidate input order.
-func (m Materials) CandidateKeys() []string {
-	return append([]string(nil), m.candidateKeys...)
-}
-
-// EligibleCandidateKeys returns only candidates whose evidence safely produced
-// transcript context, preserving candidate input order.
-func (m Materials) EligibleCandidateKeys() []string {
-	keys := make([]string, 0, len(m.eligible))
-	for _, key := range m.candidateKeys {
-		if _, ok := m.eligible[key]; ok {
-			keys = append(keys, key)
-		}
-	}
-	return keys
-}
-
-type candidateInput struct {
-	Candidates []Selector `json:"candidates"`
-}
-
-type transcriptInput struct {
-	Windows []transcriptWindow `json:"windows"`
-}
-
-type transcriptWindow struct {
-	Units []transcriptUnit `json:"units"`
-}
-
-type transcriptUnit struct {
-	ID       int            `json:"id"`
-	Kind     string         `json:"kind"`
-	Text     string         `json:"text"`
-	Metadata map[string]any `json:"metadata,omitempty"`
-	Cited    bool           `json:"cited"`
-}
-
-type sourceInterval struct {
-	start int
-	end   int
-}
-
-// BuildContext constructs bounded, source-ordered prompt inputs. It returns
-// ready=false when fewer than two candidates have safe context.
-func BuildContext(doc *source.SourceDocument, candidates []Candidate, radius int) (Materials, bool, error) {
-	if radius < 0 {
-		return Materials{}, false, fmt.Errorf("build entity reconciliation context: radius must not be negative")
-	}
-	materials := Materials{
-		candidateKeys:     make([]string, len(candidates)),
-		eligible:          make(map[string]struct{}),
-		keyBySelector:     make(map[string]string),
-		collidedSelectors: make(map[string]struct{}),
-	}
-	for index := range candidates {
-		key := fmt.Sprintf(candidateKeyFormat, index+1)
-		materials.candidateKeys[index] = key
-	}
-	if doc == nil {
-		return materials, false, nil
-	}
-
-	index := source.NewDocumentIndex(doc)
-	type preparedCandidate struct {
-		key       string
-		selector  Selector
-		intervals []sourceInterval
-		lookupKey string
-	}
-	prepared := make([]preparedCandidate, 0, len(candidates))
-	selectorCounts := make(map[string]int, len(candidates))
-	views := make([]Selector, 0, len(candidates))
-	intervals := make([]sourceInterval, 0)
-	cited := make([]bool, len(doc.Units))
-	for candidateIndex, candidate := range candidates {
-		references, candidateIntervals, valid := candidateReferences(index, candidate.SourceRefs)
-		if !valid {
-			continue
-		}
-		key := materials.candidateKeys[candidateIndex]
-		selector := Selector{Name: candidate.Name, SourceRefs: references}
-		lookupKey, err := selectorLookupKey(selector)
-		if err != nil {
-			return Materials{}, false, fmt.Errorf("build entity reconciliation context: invalid candidate material")
-		}
-		prepared = append(prepared, preparedCandidate{key: key, selector: selector, intervals: candidateIntervals, lookupKey: lookupKey})
-		selectorCounts[lookupKey]++
-	}
-	for _, candidate := range prepared {
-		if selectorCounts[candidate.lookupKey] != 1 {
-			materials.collidedSelectors[candidate.lookupKey] = struct{}{}
-			continue
-		}
-		materials.eligible[candidate.key] = struct{}{}
-		materials.keyBySelector[candidate.lookupKey] = candidate.key
-		views = append(views, candidate.selector.Clone())
-		for _, interval := range candidate.intervals {
-			for position := interval.start; position <= interval.end; position++ {
-				cited[position] = true
-			}
-			intervals = append(intervals, sourceInterval{
-				start: maxInt(0, interval.start-radius),
-				end:   minInt(len(doc.Units)-1, interval.end+radius),
-			})
-		}
-	}
-	if len(views) < 2 {
-		return materials, false, nil
-	}
-
-	windows, err := contextWindows(doc.Units, coalesceIntervals(intervals), cited)
-	if err != nil {
-		return Materials{}, false, fmt.Errorf("build entity reconciliation context: invalid source metadata")
-	}
-	candidateContent, err := json.Marshal(candidateInput{Candidates: views})
-	if err != nil {
-		return Materials{}, false, fmt.Errorf("build entity reconciliation context: invalid candidate material")
-	}
-	transcriptContent, err := json.Marshal(transcriptInput{Windows: windows})
-	if err != nil {
-		return Materials{}, false, fmt.Errorf("build entity reconciliation context: invalid transcript material")
-	}
-	materials.Candidates = newInputMaterial("candidates", candidateContent)
-	materials.Transcript = newInputMaterial("transcript", transcriptContent)
-	return materials, true, nil
-}
-
-func candidateReferences(index source.DocumentIndex, refs []source.SourceRef) ([]SourceRange, []sourceInterval, bool) {
-	if len(refs) == 0 {
-		return nil, nil, false
-	}
-	type referencedInterval struct {
-		reference SourceRange
-		interval  sourceInterval
-	}
-	prepared := make([]referencedInterval, 0, len(refs))
-	for _, ref := range refs {
-		if err := index.ValidateRef(ref); err != nil {
-			return nil, nil, false
-		}
-		start, _ := index.Position(ref.StartUnitID)
-		end, _ := index.Position(ref.EndUnitID)
-		prepared = append(prepared, referencedInterval{reference: SourceRange{StartUnitID: ref.StartUnitID, EndUnitID: ref.EndUnitID}, interval: sourceInterval{start: start, end: end}})
-	}
-	sort.Slice(prepared, func(left, right int) bool {
-		if prepared[left].interval.start != prepared[right].interval.start {
-			return prepared[left].interval.start < prepared[right].interval.start
-		}
-		return prepared[left].interval.end < prepared[right].interval.end
-	})
-	references := make([]SourceRange, 0, len(prepared))
-	intervals := make([]sourceInterval, 0, len(prepared))
-	for _, item := range prepared {
-		if len(references) > 0 && references[len(references)-1] == item.reference {
-			continue
-		}
-		references = append(references, item.reference)
-		intervals = append(intervals, item.interval)
-	}
-	return references, intervals, true
-}
-
-func selectorLookupKey(selector Selector) (string, error) {
-	content, err := json.Marshal(selector.Clone())
-	if err != nil {
-		return "", err
-	}
-	return string(content), nil
-}
-
-func cloneSourceRanges(values []SourceRange) []SourceRange {
-	if len(values) == 0 {
-		return []SourceRange{}
-	}
-	return append([]SourceRange(nil), values...)
-}
-
-func coalesceIntervals(intervals []sourceInterval) []sourceInterval {
-	if len(intervals) == 0 {
-		return nil
-	}
-	ordered := append([]sourceInterval(nil), intervals...)
-	sort.Slice(ordered, func(left, right int) bool {
-		if ordered[left].start != ordered[right].start {
-			return ordered[left].start < ordered[right].start
-		}
-		return ordered[left].end < ordered[right].end
-	})
-	coalesced := make([]sourceInterval, 0, len(ordered))
-	for _, interval := range ordered {
-		if len(coalesced) == 0 || interval.start > coalesced[len(coalesced)-1].end+1 {
-			coalesced = append(coalesced, interval)
-			continue
-		}
-		if interval.end > coalesced[len(coalesced)-1].end {
-			coalesced[len(coalesced)-1].end = interval.end
-		}
-	}
-	return coalesced
-}
-
-func contextWindows(units []source.SourceUnit, intervals []sourceInterval, cited []bool) ([]transcriptWindow, error) {
-	windows := make([]transcriptWindow, 0, len(intervals))
-	for _, interval := range intervals {
-		window := transcriptWindow{Units: make([]transcriptUnit, 0, interval.end-interval.start+1)}
-		for position := interval.start; position <= interval.end; position++ {
-			unit := units[position]
-			metadata, err := source.CloneMetadata(unit.Metadata)
-			if err != nil {
-				return nil, err
-			}
-			window.Units = append(window.Units, transcriptUnit{
-				ID: unit.ID, Kind: unit.Kind, Text: unit.Text, Metadata: metadata, Cited: cited[position],
-			})
-		}
-		windows = append(windows, window)
-	}
-	return windows, nil
-}
-
-func newInputMaterial(name string, content []byte) contracts.LLMInputMaterial {
-	digest := sha256.Sum256(content)
-	return contracts.NewLLMInputMaterial(name, "application/json", content, "sha256:"+hex.EncodeToString(digest[:]), "")
-}
-
-func minInt(left, right int) int {
-	if left < right {
-		return left
-	}
-	return right
-}
-
-func maxInt(left, right int) int {
-	if left > right {
-		return left
-	}
-	return right
-}

internal/modules/dnd/shared/entityreconcile/entityreconcile_test.go

@@ -1,328 +0,0 @@
-package entityreconcile
-
-import (
-	"bytes"
-	"encoding/json"
-	"io/fs"
-	"reflect"
-	"strings"
-	"testing"
-
-	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
-	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
-	"github.com/santhosh-tekuri/jsonschema/v6"
-)
-
-func TestBuildContextUsesContextualSelectorsSourceOrderAndOwnedData(t *testing.T) {
-	doc := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{
-		{ID: 40, Kind: "narration", Text: "zero"},
-		{ID: 10, Kind: "speech", Text: "one", Metadata: map[string]any{"speaker": map[string]any{"name": "Mira"}}},
-		{ID: 70, Kind: "speech", Text: "two"},
-		{ID: 20, Kind: "narration", Text: "three"},
-		{ID: 90, Kind: "speech", Text: "four"},
-	}}
-	candidates := []Candidate{
-		{Name: "The Tavern", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 10, EndUnitID: 20}}},
-		{Name: "The Tavern", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 90, EndUnitID: 90}}},
-		{Name: "Broken", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 20, EndUnitID: 10}}},
-	}
-	before := cloneCandidates(candidates)
-
-	materials, ready, err := BuildContext(doc, candidates, 1)
-	if err != nil || !ready {
-		t.Fatalf("BuildContext() = %#v, %t, %v; want ready materials", materials, ready, err)
-	}
-	if !reflect.DeepEqual(candidates, before) {
-		t.Fatalf("BuildContext() mutated candidates: %#v", candidates)
-	}
-	if got, want := materials.CandidateKeys(), []string{"candidate-000001", "candidate-000002", "candidate-000003"}; !reflect.DeepEqual(got, want) {
-		t.Fatalf("CandidateKeys() = %#v, want %#v", got, want)
-	}
-	if got, want := materials.EligibleCandidateKeys(), []string{"candidate-000001", "candidate-000002"}; !reflect.DeepEqual(got, want) {
-		t.Fatalf("EligibleCandidateKeys() = %#v, want %#v", got, want)
-	}
-	if !json.Valid(materials.Candidates.Content) || !json.Valid(materials.Transcript.Content) {
-		t.Fatalf("prompt materials are not JSON: %#v", materials)
-	}
-	if strings.Contains(string(materials.Candidates.Content), doc.ID) {
-		t.Fatalf("candidate material leaked source identity: %s", materials.Candidates.Content)
-	}
-
-	var candidatePayload candidateInput
-	if err := json.Unmarshal(materials.Candidates.Content, &candidatePayload); err != nil {
-		t.Fatal(err)
-	}
-	if len(candidatePayload.Candidates) != 2 || candidatePayload.Candidates[0].Name != candidatePayload.Candidates[1].Name || strings.Contains(string(materials.Candidates.Content), "candidate-") {
-		t.Fatalf("candidate payload = %#v, want contextual descriptors without keys", candidatePayload)
-	}
-	if got := candidatePayload.Candidates[0].SourceRefs[0]; got != (SourceRange{StartUnitID: 10, EndUnitID: 20}) {
-		t.Fatalf("candidate reference = %#v", got)
-	}
-
-	var transcript transcriptInput
-	if err := json.Unmarshal(materials.Transcript.Content, &transcript); err != nil {
-		t.Fatal(err)
-	}
-	if len(transcript.Windows) != 1 || len(transcript.Windows[0].Units) != 5 {
-		t.Fatalf("windows = %#v, want one bounded coalesced window", transcript.Windows)
-	}
-	units := transcript.Windows[0].Units
-	for index, wantID := range []int{40, 10, 70, 20, 90} {
-		if units[index].ID != wantID {
-			t.Fatalf("window unit %d = %d, want source-order %d", index, units[index].ID, wantID)
-		}
-	}
-	if units[0].Cited || !units[1].Cited || !units[2].Cited || !units[3].Cited || !units[4].Cited {
-		t.Fatalf("citation flags = %#v", units)
-	}
-
-	windows, err := contextWindows(doc.Units, []sourceInterval{{start: 1, end: 1}}, make([]bool, len(doc.Units)))
-	if err != nil {
-		t.Fatal(err)
-	}
-	windows[0].Units[0].Metadata["speaker"].(map[string]any)["name"] = "changed"
-	if doc.Units[1].Metadata["speaker"].(map[string]any)["name"] != "Mira" {
-		t.Fatal("context metadata aliases source document")
-	}
-}
-
-func TestBuildContextExcludesCollidingDescriptors(t *testing.T) {
-	doc := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{{ID: 1}, {ID: 2}, {ID: 3}}}
-	candidates := []Candidate{
-		{Name: "The Tavern", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 1, EndUnitID: 1}}},
-		{Name: "The Tavern", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 1, EndUnitID: 1}}},
-		{Name: "The Market", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 3, EndUnitID: 3}}},
-	}
-	materials, ready, err := BuildContext(doc, candidates, 0)
-	if err != nil || ready || len(materials.EligibleCandidateKeys()) != 1 || strings.Contains(string(materials.Candidates.Content), "The Tavern") {
-		t.Fatalf("BuildContext() = %#v, %t, %v", materials, ready, err)
-	}
-	assessment := materials.Assess(ProposalResponse{DuplicateGroups: []DuplicateGroup{{
-		Members:   []Selector{{Name: "The Tavern", SourceRefs: []SourceRange{{StartUnitID: 1, EndUnitID: 1}}}, {Name: "The Market", SourceRefs: []SourceRange{{StartUnitID: 3, EndUnitID: 3}}}},
-		Canonical: Selector{Name: "The Market", SourceRefs: []SourceRange{{StartUnitID: 3, EndUnitID: 3}}},
-	}}})
-	if !hasIssue(assessment.Issues(), "member_ineligible") {
-		t.Fatalf("Assess() issues = %#v, want collided descriptor rejection", assessment.Issues())
-	}
-}
-
-func TestAssessmentRejectsPartialAndReorderedDescriptors(t *testing.T) {
-	doc := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{{ID: 10}, {ID: 20}, {ID: 30}}}
-	materials, ready, err := BuildContext(doc, []Candidate{
-		{Name: "The Tavern", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 20, EndUnitID: 20}, {SourceID: doc.ID, StartUnitID: 10, EndUnitID: 10}}},
-		{Name: "The Market", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 30, EndUnitID: 30}}},
-	}, 0)
-	if err != nil || !ready {
-		t.Fatalf("BuildContext() = %#v, %t, %v", materials, ready, err)
-	}
-	selectors := materialSelectors(t, materials)
-	for _, refs := range [][]SourceRange{
-		{{StartUnitID: 10, EndUnitID: 10}},
-		{{StartUnitID: 20, EndUnitID: 20}, {StartUnitID: 10, EndUnitID: 10}},
-	} {
-		assessment := materials.Assess(ProposalResponse{DuplicateGroups: []DuplicateGroup{{
-			Members:   []Selector{{Name: "The Tavern", SourceRefs: refs}, selectors[1]},
-			Canonical: selectors[1],
-		}}})
-		if !hasIssue(assessment.Issues(), "member_unknown") {
-			t.Fatalf("Assess(%#v) issues = %#v, want descriptor mismatch rejection", refs, assessment.Issues())
-		}
-	}
-}
-
-func TestBuildContextExcludesUnsafeReferencesAndCoalescesAdjacentWindows(t *testing.T) {
-	doc := &source.SourceDocument{ID: "session", Units: []source.SourceUnit{{ID: 9}, {ID: 3}, {ID: 8}, {ID: 1}, {ID: 7}}}
-	candidates := []Candidate{
-		{Name: "One", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 3, EndUnitID: 3}}},
-		{Name: "Two", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 8, EndUnitID: 8}}},
-		{Name: "Missing", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: 99, EndUnitID: 99}}},
-		{Name: "Foreign", SourceRefs: []source.SourceRef{{SourceID: "other", StartUnitID: 1, EndUnitID: 1}}},
-		{Name: "Blank"},
-	}
-	materials, ready, err := BuildContext(doc, candidates, 0)
-	if err != nil || !ready {
-		t.Fatalf("BuildContext() error = %v, ready = %t", err, ready)
-	}
-	if got, want := materials.EligibleCandidateKeys(), []string{"candidate-000001", "candidate-000002"}; !reflect.DeepEqual(got, want) {
-		t.Fatalf("EligibleCandidateKeys() = %#v, want %#v", got, want)
-	}
-	var transcript transcriptInput
-	if err := json.Unmarshal(materials.Transcript.Content, &transcript); err != nil {
-		t.Fatal(err)
-	}
-	if len(transcript.Windows) != 1 || len(transcript.Windows[0].Units) != 2 || transcript.Windows[0].Units[0].ID != 3 || transcript.Windows[0].Units[1].ID != 8 {
-		t.Fatalf("windows = %#v, want adjacent document-order units coalesced", transcript.Windows)
-	}
-	if _, ready, err := BuildContext(doc, candidates, -1); err == nil || ready {
-		t.Fatalf("BuildContext(radius=-1) = ready %t, err %v", ready, err)
-	}
-}
-
-func TestAssessmentRejectsEveryUnsafeProposalCategory(t *testing.T) {
-	materials := preparedMaterials(t, 4, true)
-	selectors := materialSelectors(t, materials)
-	unsafe := []struct {
-		name     string
-		response ProposalResponse
-		category string
-	}{
-		{"blank member", ProposalResponse{DuplicateGroups: []DuplicateGroup{{Members: []Selector{{}, selectors[1]}, Canonical: selectors[1]}}}, "member_blank"},
-		{"unknown member", ProposalResponse{DuplicateGroups: []DuplicateGroup{{Members: []Selector{{Name: "unknown", SourceRefs: []SourceRange{{StartUnitID: 99, EndUnitID: 99}}}, selectors[1]}, Canonical: selectors[1]}}}, "member_unknown"},
-		{"repeated member", ProposalResponse{DuplicateGroups: []DuplicateGroup{{Members: []Selector{selectors[0], selectors[0]}, Canonical: selectors[0]}}}, "repeated_member"},
-		{"too small", ProposalResponse{DuplicateGroups: []DuplicateGroup{{Members: []Selector{selectors[0]}, Canonical: selectors[0]}}}, "fewer_than_two_members"},
-		{"canonical blank", ProposalResponse{DuplicateGroups: []DuplicateGroup{{Members: []Selector{selectors[0], selectors[1]}, Canonical: Selector{}}}}, "canonical_blank"},
-		{"canonical not member", ProposalResponse{DuplicateGroups: []DuplicateGroup{{Members: []Selector{selectors[0], selectors[1]}, Canonical: selectors[2]}}}, "canonical_not_member"},
-		{"overlapping", ProposalResponse{DuplicateGroups: []DuplicateGroup{
-			{Members: []Selector{selectors[0], selectors[1]}, Canonical: selectors[0]},
-			{Members: []Selector{selectors[1], selectors[2]}, Canonical: selectors[2]},
-		}}, "overlapping_member"},
-	}
-	for _, test := range unsafe {
-		t.Run(test.name, func(t *testing.T) {
-			assessment := materials.Assess(test.response)
-			if len(assessment.SafeGroups()) != 0 || assessment.DiscardedGroups() != len(test.response.DuplicateGroups) || !hasIssue(assessment.Issues(), test.category) {
-				t.Fatalf("Assess() = groups %#v discarded %d issues %#v; want %q rejection", assessment.SafeGroups(), assessment.DiscardedGroups(), assessment.Issues(), test.category)
-			}
-		})
-	}
-}
-
-func TestAssessmentReturnsNonOverlappingSafeGroupsAndDefensiveCopies(t *testing.T) {
-	materials := preparedMaterials(t, 4, false)
-	keys := materials.CandidateKeys()
-	selectors := materialSelectors(t, materials)
-	assessment := materials.Assess(ProposalResponse{DuplicateGroups: []DuplicateGroup{
-		{Members: []Selector{selectors[1], selectors[0]}, Canonical: selectors[1]},
-		{Members: []Selector{selectors[3], selectors[2]}, Canonical: selectors[2]},
-	}})
-	groups := assessment.SafeGroups()
-	if assessment.DiscardedGroups() != 0 || len(assessment.Issues()) != 0 || len(groups) != 2 {
-		t.Fatalf("assessment = %#v, %d, %#v", groups, assessment.DiscardedGroups(), assessment.Issues())
-	}
-	if got, want := groups[0].Members(), []string{keys[0], keys[1]}; !reflect.DeepEqual(got, want) || groups[0].Canonical() != keys[1] {
-		t.Fatalf("first safe group = %#v / %q", got, groups[0].Canonical())
-	}
-	keys[0] = "changed"
-	if materials.CandidateKeys()[0] == "changed" {
-		t.Fatal("CandidateKeys() exposed retained keys")
-	}
-	members := groups[0].Members()
-	members[0] = "changed"
-	if groups[0].Members()[0] == "changed" || assessment.SafeGroups()[0].Members()[0] == "changed" {
-		t.Fatal("SafeGroups() exposed retained members")
-	}
-}
-
-func TestSharedResponseSchemaIsPrivateStrictAndRegisterableOnce(t *testing.T) {
-	schema, err := LoadResponseSchema()
-	if err != nil {
-		t.Fatal(err)
-	}
-	if schema.Key != ResponseSchemaKey || schema.ID != ResponseSchemaID || schema.Name != ResponseSchemaName || schema.Version != SchemaVersion || !strings.HasPrefix(schema.SHA256, "sha256:") || !json.Valid(schema.JSONSchema) {
-		t.Fatalf("schema = %#v", schema)
-	}
-	for _, test := range []struct {
-		name  string
-		value any
-		valid bool
-	}{
-		{"empty groups", map[string]any{"duplicate_groups": []any{}}, true},
-		{"semantic proposal problem", map[string]any{"duplicate_groups": []any{map[string]any{"members": []any{map[string]any{"name": "Mira", "source_refs": []any{map[string]any{"start_unit_id": 1, "end_unit_id": 1}}}}, "canonical": map[string]any{"name": "Mira", "source_refs": []any{map[string]any{"start_unit_id": 1, "end_unit_id": 1}}}}}}, true},
-		{"missing groups", map[string]any{}, false},
-		{"unknown top level", map[string]any{"duplicate_groups": []any{}, "extra": true}, false},
-		{"replacement name", map[string]any{"duplicate_groups": []any{map[string]any{"members": []any{}, "canonical": map[string]any{"name": "Mira", "source_refs": []any{}}, "name": "replacement"}}}, false},
-		{"missing selector evidence", map[string]any{"duplicate_groups": []any{map[string]any{"members": []any{}, "canonical": map[string]any{"name": "Mira"}}}}, false},
-		{"invalid range", map[string]any{"duplicate_groups": []any{map[string]any{"members": []any{map[string]any{"name": "Mira", "source_refs": []any{map[string]any{"start_unit_id": 0, "end_unit_id": 1}}}}, "canonical": map[string]any{"name": "Mira", "source_refs": []any{}}}}}, false},
-	} {
-		t.Run(test.name, func(t *testing.T) {
-			content, err := json.Marshal(test.value)
-			if err != nil {
-				t.Fatal(err)
-			}
-			err = validateSchema(content, schema.JSONSchema)
-			if (err == nil) != test.valid {
-				t.Fatalf("validateSchema() error = %v, want valid=%t", err, test.valid)
-			}
-		})
-	}
-	first := schema.JSONSchema
-	first[0] = '['
-	second, err := LoadResponseSchema()
-	if err != nil || !json.Valid(second.JSONSchema) || bytes.Equal(first, second.JSONSchema) {
-		t.Fatalf("LoadResponseSchema() returned shared content: %s, %v", second.JSONSchema, err)
-	}
-	registry := llm.NewAssetRegistry()
-	if err := RegisterSchemaAssets(registry); err != nil {
-		t.Fatalf("RegisterSchemaAssets() error = %v", err)
-	}
-	if schemaFS, err := registry.SchemaFS(); err != nil {
-		t.Fatalf("SchemaFS() error = %v", err)
-	} else if content, err := fs.ReadFile(schemaFS, "dnd_entity_reconcile_llm.v1.json"); err != nil || !json.Valid(content) {
-		t.Fatalf("shared schema asset = %s, %v", content, err)
-	}
-}
-
-func preparedMaterials(t *testing.T, count int, includeIneligible bool) Materials {
-	t.Helper()
-	doc := &source.SourceDocument{ID: "session", Units: make([]source.SourceUnit, count)}
-	candidates := make([]Candidate, count)
-	for index := range candidates {
-		doc.Units[index] = source.SourceUnit{ID: index + 1, Text: "unit"}
-		candidates[index] = Candidate{Name: "same display name", SourceRefs: []source.SourceRef{{SourceID: doc.ID, StartUnitID: index + 1, EndUnitID: index + 1}}}
-	}
-	if includeIneligible && count > 3 {
-		candidates[3].SourceRefs = []source.SourceRef{{SourceID: "other", StartUnitID: 1, EndUnitID: 1}}
-	}
-	materials, ready, err := BuildContext(doc, candidates, 0)
-	if err != nil || !ready {
-		t.Fatalf("BuildContext() = %#v, %t, %v", materials, ready, err)
-	}
-	return materials
-}
-
-func materialSelectors(t *testing.T, materials Materials) []Selector {
-	t.Helper()
-	var input candidateInput
-	if err := json.Unmarshal(materials.Candidates.Content, &input); err != nil {
-		t.Fatal(err)
-	}
-	return input.Candidates
-}
-
-func cloneCandidates(input []Candidate) []Candidate {
-	output := make([]Candidate, len(input))
-	copy(output, input)
-	for index := range output {
-		output[index].SourceRefs = append([]source.SourceRef(nil), input[index].SourceRefs...)
-	}
-	return output
-}
-
-func hasIssue(issues []Issue, want string) bool {
-	for _, issue := range issues {
-		if issue.Category == want {
-			return true
-		}
-	}
-	return false
-}
-
-func validateSchema(instanceContent, schemaContent []byte) error {
-	instance, err := jsonschema.UnmarshalJSON(bytes.NewReader(instanceContent))
-	if err != nil {
-		return err
-	}
-	document, err := jsonschema.UnmarshalJSON(bytes.NewReader(schemaContent))
-	if err != nil {
-		return err
-	}
-	compiler := jsonschema.NewCompiler()
-	if err := compiler.AddResource("schema.json", document); err != nil {
-		return err
-	}
-	compiled, err := compiler.Compile("schema.json")
-	if err != nil {
-		return err
-	}
-	return compiled.Validate(instance)
-}

internal/modules/dnd/shared/entityreconcile/proposal.go

@@ -1,175 +0,0 @@
-package entityreconcile
-
-import (
-	"sort"
-	"strings"
-)
-
-// ProposalResponse is the private structured response exchanged with the
-// reconciliation prompt. It identifies candidates by contextual selectors.
-type ProposalResponse struct {
-	DuplicateGroups []DuplicateGroup `json:"duplicate_groups"`
-}
-
-// DuplicateGroup proposes contextual candidate descriptors that might denote
-// one entity.
-type DuplicateGroup struct {
-	Members   []Selector `json:"members"`
-	Canonical Selector   `json:"canonical"`
-}
-
-// Issue identifies one unsafe proposal category without prescribing a warning
-// message or retry policy to a consuming normalizer.
-type Issue struct {
-	GroupIndex int
-	Category   string
-}
-
-// SafeGroup identifies one validated, non-overlapping duplicate group.
-type SafeGroup struct {
-	members   []string
-	canonical string
-}
-
-// Members returns an owned copy of the group's candidate keys.
-func (g SafeGroup) Members() []string { return append([]string(nil), g.members...) }
-
-// Canonical returns the selected canonical candidate key.
-func (g SafeGroup) Canonical() string { return g.canonical }
-
-// Assessment contains only safe groups. Its accessors return owned copies so
-// callers cannot mutate retained assessment data.
-type Assessment struct {
-	safeGroups      []SafeGroup
-	discardedGroups int
-	issues          []Issue
-}
-
-// SafeGroups returns validated non-overlapping groups in proposal order.
-func (a Assessment) SafeGroups() []SafeGroup {
-	groups := make([]SafeGroup, len(a.safeGroups))
-	for index, group := range a.safeGroups {
-		groups[index] = SafeGroup{members: append([]string(nil), group.members...), canonical: group.canonical}
-	}
-	return groups
-}
-
-// DiscardedGroups returns the number of rejected proposal groups.
-func (a Assessment) DiscardedGroups() int { return a.discardedGroups }
-
-// Issues returns the deterministic rejection categories in proposal order.
-func (a Assessment) Issues() []Issue { return append([]Issue(nil), a.issues...) }
-
-// Assess resolves contextual descriptors to internal candidate keys, then
-// validates the proposal without exposing those keys to the model.
-func (m Materials) Assess(response ProposalResponse) Assessment {
-	groups := make([]assessedGroup, len(response.DuplicateGroups))
-	issues := make([]Issue, 0)
-	for groupIndex, proposal := range response.DuplicateGroups {
-		groups[groupIndex] = m.assessGroup(proposal)
-		for _, category := range groups[groupIndex].issues {
-			issues = append(issues, Issue{GroupIndex: groupIndex, Category: category})
-		}
-	}
-
-	owners := make(map[string][]int)
-	for groupIndex, group := range groups {
-		if !group.locallyValid {
-			continue
-		}
-		for _, key := range group.members {
-			owners[key] = append(owners[key], groupIndex)
-		}
-	}
-	for groupIndex := range groups {
-		if !groups[groupIndex].locallyValid {
-			continue
-		}
-		for _, key := range groups[groupIndex].members {
-			if len(owners[key]) > 1 {
-				groups[groupIndex].conflicting = true
-				issues = append(issues, Issue{GroupIndex: groupIndex, Category: "overlapping_member"})
-				break
-			}
-		}
-	}
-
-	assessment := Assessment{issues: issues}
-	for _, group := range groups {
-		if !group.locallyValid || group.conflicting {
-			assessment.discardedGroups++
-			continue
-		}
-		assessment.safeGroups = append(assessment.safeGroups, SafeGroup{members: append([]string(nil), group.members...), canonical: group.canonical})
-	}
-	return assessment
-}
-
-type assessedGroup struct {
-	members      []string
-	canonical    string
-	issues       []string
-	locallyValid bool
-	conflicting  bool
-}
-
-func (m Materials) assessGroup(proposal DuplicateGroup) assessedGroup {
-	issues := make([]string, 0)
-	members := make([]string, 0, len(proposal.Members))
-	seen := make(map[string]struct{}, len(proposal.Members))
-	for _, selector := range proposal.Members {
-		key, category := m.selectorKey(selector)
-		if category != "" {
-			issues = append(issues, "member_"+category)
-			continue
-		}
-		if _, exists := seen[key]; exists {
-			issues = append(issues, "repeated_member")
-			continue
-		}
-		seen[key] = struct{}{}
-		members = append(members, key)
-	}
-	canonical, canonicalCategory := m.selectorKey(proposal.Canonical)
-	if canonicalCategory != "" {
-		issues = append(issues, "canonical_"+canonicalCategory)
-	}
-	if len(members) < 2 {
-		issues = append(issues, "fewer_than_two_members")
-	}
-	if canonicalCategory == "" && !contains(members, canonical) {
-		issues = append(issues, "canonical_not_member")
-	}
-	sort.Strings(members)
-	return assessedGroup{members: members, canonical: canonical, issues: issues, locallyValid: len(issues) == 0}
-}
-
-func (m Materials) selectorKey(selector Selector) (string, string) {
-	if strings.TrimSpace(selector.Name) == "" {
-		return "", "blank"
-	}
-	lookupKey, err := selectorLookupKey(selector)
-	if err != nil {
-		return "", "unknown"
-	}
-	if _, collided := m.collidedSelectors[lookupKey]; collided {
-		return "", "ineligible"
-	}
-	key, ok := m.keyBySelector[lookupKey]
-	if !ok {
-		return "", "unknown"
-	}
-	if _, eligible := m.eligible[key]; !eligible {
-		return "", "ineligible"
-	}
-	return key, ""
-}
-
-func contains(values []string, want string) bool {
-	for _, value := range values {
-		if value == want {
-			return true
-		}
-	}
-	return false
-}

internal/modules/dnd/shared/entityreconcile/schema.go

@@ -1,55 +0,0 @@
-package entityreconcile
-
-import (
-	"fmt"
-	"io/fs"
-
-	rootassets "gitea.maximumdirect.net/eric/notarius/assets"
-	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
-)
-
-const (
-	ResponseSchemaKey  = llm.ResponseSchemaKey("dnd_entity_reconcile_llm")
-	ResponseSchemaID   = "notarius.dnd.entity_reconcile.llm"
-	ResponseSchemaName = "notarius_dnd_entity_reconcile_llm_v1"
-	SchemaVersion      = "v1"
-	SchemaAssetPath    = "schemas/dnd_entity_reconcile_llm.v1.json"
-)
-
-func schemaAssetFS() (fs.FS, error) {
-	assets, err := fs.Sub(rootassets.FS(), "dnd/entity-reconciliation")
-	if err != nil {
-		return nil, fmt.Errorf("scope entity reconciliation assets: %w", err)
-	}
-	return assets, nil
-}
-
-// LoadResponseSchema returns the shared private duplicate-group response
-// contract. It is intentionally separate from durable artifact schemas.
-func LoadResponseSchema() (llm.ResponseSchema, error) {
-	assets, err := schemaAssetFS()
-	if err != nil {
-		return llm.ResponseSchema{}, err
-	}
-	return llm.LoadResponseSchema(assets, llm.ResponseSchemaDefinition{
-		Key:       ResponseSchemaKey,
-		ID:        ResponseSchemaID,
-		Version:   SchemaVersion,
-		Name:      ResponseSchemaName,
-		AssetPath: SchemaAssetPath,
-	})
-}
-
-// RegisterSchemaAssets makes the shared private response schema available to
-// prompt preparation. A family registrar can register it once for all consumers.
-func RegisterSchemaAssets(registry *llm.AssetRegistry) error {
-	assets, err := schemaAssetFS()
-	if err != nil {
-		return err
-	}
-	schemas, err := fs.Sub(assets, "schemas")
-	if err != nil {
-		return fmt.Errorf("scope entity reconciliation schemas: %w", err)
-	}
-	return registry.RegisterSchemaFS(schemas, ".")
-}

internal/modules/generic/register/register.go

@@ -6,6 +6,7 @@ import (
 
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/generic/chunk/units"
 	jsonoutput "gitea.maximumdirect.net/eric/notarius/internal/modules/generic/output/json"
 	alwaysaccept "gitea.maximumdirect.net/eric/notarius/internal/modules/generic/validate/always_accept"
@@ -16,14 +17,17 @@ import (
 
 // Register adds all production domain-neutral modules and validators.
 func Register(registries pipeline.Registries, assets *llm.AssetRegistry) error {
-	_ = assets
 	if err := validateRegistries(registries); err != nil {
 		return err
 	}
+	if assets == nil {
+		return fmt.Errorf("generic registrar: asset registry must not be nil")
+	}
 	registrations := []struct {
 		name     string
 		register func() error
 	}{
+		{name: "semantic reconciliation assets", register: func() error { return semanticreconcile.RegisterAssets(assets) }},
 		{name: "generic chunker", register: func() error { return units.Register(registries.Chunkers) }},
 		{name: "always accept validator", register: func() error { return alwaysaccept.Register(registries.Validators) }},
 		{name: "always reject validator", register: func() error { return alwaysreject.Register(registries.Validators) }},

internal/modules/generic/register/register_test.go

@@ -1,15 +1,18 @@
 package register
 
 import (
+	"io/fs"
 	"strings"
 	"testing"
 
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
 )
 
 func TestRegisterAddsGenericFamily(t *testing.T) {
 	registries := completeRegistries()
-	if err := Register(registries, nil); err != nil {
+	assets := llm.NewAssetRegistry()
+	if err := Register(registries, assets); err != nil {
 		t.Fatalf("Register() error = %v, want nil", err)
 	}
 	assertContainsKeys(t, "chunkers", registries.Chunkers.RegisteredKeys(), []string{"generic"})
@@ -30,6 +33,31 @@ func TestRegisterAddsGenericFamily(t *testing.T) {
 	if output, err := registries.Outputs.Build("json"); err != nil || output.Key() != "json" {
 		t.Fatalf("build json output = %v, %v; want json implementation", output, err)
 	}
+	promptAssets, err := assets.PromptFS()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := fs.ReadFile(promptAssets, "generic.semantic_reconciliation/prompt.yaml"); err != nil {
+		t.Fatalf("registered semantic reconciliation prompt: %v", err)
+	}
+	schemaAssets, err := assets.SchemaFS()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := fs.ReadFile(schemaAssets, "semantic_reconciliation_llm.v1.json"); err != nil {
+		t.Fatalf("registered semantic reconciliation schema: %v", err)
+	}
+}
+
+func TestRegisterRejectsNilAssetRegistryBeforeMutation(t *testing.T) {
+	registries := completeRegistries()
+	err := Register(registries, nil)
+	if err == nil || !strings.Contains(err.Error(), "asset registry must not be nil") {
+		t.Fatalf("Register() error = %v, want nil asset registry error", err)
+	}
+	if len(registries.Chunkers.RegisteredKeys()) != 0 {
+		t.Fatalf("chunker keys = %#v, want validation before mutation", registries.Chunkers.RegisteredKeys())
+	}
 }
 
 func TestRegisterRejectsMissingGenericRegistriesBeforeMutation(t *testing.T) {
@@ -48,7 +76,7 @@ func TestRegisterRejectsMissingGenericRegistriesBeforeMutation(t *testing.T) {
 		t.Run(test.name, func(t *testing.T) {
 			registries := completeRegistries()
 			test.remove(&registries)
-			err := Register(registries, nil)
+			err := Register(registries, llm.NewAssetRegistry())
 			if err == nil || !strings.Contains(err.Error(), test.wantErr) {
 				t.Fatalf("Register() error = %v, want %q", err, test.wantErr)
 			}
@@ -61,11 +89,12 @@ func TestRegisterRejectsMissingGenericRegistriesBeforeMutation(t *testing.T) {
 
 func TestRegisterReportsDuplicateGenericRegistration(t *testing.T) {
 	registries := completeRegistries()
-	if err := Register(registries, nil); err != nil {
+	assets := llm.NewAssetRegistry()
+	if err := Register(registries, assets); err != nil {
 		t.Fatalf("first Register() error = %v, want nil", err)
 	}
-	err := Register(registries, nil)
-	if err == nil || !strings.Contains(err.Error(), "register generic chunker") || !strings.Contains(err.Error(), "already registered") {
+	err := Register(registries, assets)
+	if err == nil || !strings.Contains(err.Error(), "register semantic reconciliation assets") || !strings.Contains(err.Error(), "already registered") {
 		t.Fatalf("second Register() error = %v, want contextual duplicate error", err)
 	}
 }

internal/modules/integration/dnd_npc_grounded_test.go

@@ -17,6 +17,7 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/evidencecontext"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd"
 	combatcodec "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/codec/combatturns"
 	npccodec "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/codec/npcregistry"
@@ -51,8 +52,8 @@ func TestNPCOutputGroundsSpellAndCombatConsumersThroughOneOperation(t *testing.T
 	for name, value := range map[string]string{
 		"extract:npc_registry:dnd/npc-registry:mapping_policy":                   "dnd.npc_registry.extract_mapping.v2",
 		"normalize:npc_registry:dnd/npc-registry:identity_policy":                "dnd.npc_registry.identity.v1",
-		"normalize:npc_registry:dnd/npc-registry:normalization_policy":    "dnd.npc_registry.normalize.v4",
-		"normalize:npc_registry:dnd/npc-registry:semantic_context_policy": "dnd.entity_reconcile.context.v1:2",
+		"normalize:npc_registry:dnd/npc-registry:normalization_policy":           npcnormalize.NormalizationPolicy,
+		"normalize:npc_registry:dnd/npc-registry:semantic_reconciliation_policy": semanticreconcile.Policy,
 		"extract:spells:dnd/spells:mapping_policy":                               "dnd.spells.extract_mapping.v2",
 		"extract:combat:dnd/combat-turns:scene_gate_policy":                      "dnd.combat_turns.scene_gate.v1",
 	} {
@@ -63,6 +64,7 @@ func TestNPCOutputGroundsSpellAndCombatConsumersThroughOneOperation(t *testing.T
 		"extract:npc_registry:dnd/npc-registry:response_schema",
 		"normalize:npc_registry:dnd/npc-registry:prompt",
 		"normalize:npc_registry:dnd/npc-registry:response_schema",
+		"normalize:npc_registry:dnd/npc-registry:semantic_reconciliation_limits",
 		"extract:spells:dnd/spells:prompt",
 		"extract:spells:dnd/spells:response_schema",
 		"extract:spells:dnd/spells:npc_registry",

internal/modules/integration/dnd_npc_occurrences_runner_test.go

@@ -292,10 +292,7 @@ func (client *semanticNPCOccurrenceClient) CompleteStructured(_ context.Context,
 		}
 		payload = map[string]any{"npcs": []any{map[string]any{"name": name, "source_refs": []any{map[string]int{"start_unit_id": client.npcCalls, "end_unit_id": client.npcCalls}}}}}
 	case npcnormalize.PromptID:
-		content, err := contextualReconciliationContent([]byte(`{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000001"}]}`), request.Inputs["candidates"].Content)
-		if err != nil {
-			return contracts.StructuredCompletionResponse{}, err
-		}
+		content := []byte(`{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":1}]}`)
 		if err := json.Unmarshal(content, out); err != nil {
 			return contracts.StructuredCompletionResponse{}, err
 		}

internal/modules/integration/dnd_npc_registry_runner_test.go

@@ -5,7 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
-	"strconv"
 	"strings"
 	"testing"
 
@@ -13,12 +12,12 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/semanticreconcile"
 	npccodec "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/codec/npcregistry"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/extract/npcregistry"
 	npcnormalize "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/normalize/npcregistry"
 	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/npcs/identity"
 	dndregister "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/register"
-	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared/entityreconcile"
 	npcshape "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/validate/npcregistry/shape"
 	npcregistrysourcerefs "gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/validate/npcregistry/source_refs"
 	genericregister "gitea.maximumdirect.net/eric/notarius/internal/modules/generic/register"
@@ -98,7 +97,7 @@ func TestRunnerProcessesSeriatimInputWithProductionDNDNPCPipeline(t *testing.T)
 		t.Fatalf("manifest lane = %#v, want NPC production composition", lane)
 	}
 	normalizerMetadata, ok := lane.Metadata["normalizer"].(map[string]any)
-	if !ok || normalizerMetadata["identity_policy"] != identity.Policy || normalizerMetadata["normalization_policy"] != npcnormalize.NormalizationPolicy || normalizerMetadata["prompt_id"] != npcnormalize.PromptID || normalizerMetadata["response_schema_id"] != entityreconcile.ResponseSchemaID {
+	if !ok || normalizerMetadata["identity_policy"] != identity.Policy || normalizerMetadata["normalization_policy"] != npcnormalize.NormalizationPolicy || normalizerMetadata["prompt_id"] != npcnormalize.PromptID || normalizerMetadata["response_schema_id"] != semanticreconcile.ResponseSchemaID {
 		t.Fatalf("normalizer metadata = %#v, want identity and normalization policies", lane.Metadata)
 	}
 	var npcOutputFile *contracts.OutputFile
@@ -180,8 +179,8 @@ func TestProductionNPCNormalizationRetryUsesFinalSafeProposal(t *testing.T) {
 		{Name: "Mira Thorn", SourceRefs: []npcProductionSourceRef{{StartUnitID: 2, EndUnitID: 2}}},
 		{Name: "Hooded Guard", SourceRefs: []npcProductionSourceRef{{StartUnitID: 3, EndUnitID: 3}}},
 	}}
-	partial := []byte(`{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"},{"members":["candidate-000003","unknown"],"canonical":"candidate-000003"}]}`)
-	safe := []byte(`{"duplicate_groups":[{"members":["candidate-000001","candidate-000002"],"canonical":"candidate-000002"}]}`)
+	partial := []byte(`{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2},{"candidate_ids":[3,99],"canonical_candidate_id":3}]}`)
+	safe := []byte(`{"duplicate_groups":[{"candidate_ids":[1,2],"canonical_candidate_id":2}]}`)
 
 	for _, test := range []struct {
 		name           string
@@ -267,11 +266,6 @@ func (client *fakeNPCProductionLLMClient) CompleteStructured(_ context.Context,
 			}
 			content = append([]byte(nil), client.normalizeResponses[index]...)
 		}
-		var err error
-		content, err = contextualReconciliationContent(content, req.Inputs["candidates"].Content)
-		if err != nil {
-			return contracts.StructuredCompletionResponse{}, err
-		}
 	default:
 		return contracts.StructuredCompletionResponse{}, fmt.Errorf("unexpected fake NPC prompt %q", req.PromptID)
 	}
@@ -281,43 +275,6 @@ func (client *fakeNPCProductionLLMClient) CompleteStructured(_ context.Context,
 	return contracts.StructuredCompletionResponse{Content: content}, nil
 }
 
-func contextualReconciliationContent(content, candidateContent []byte) ([]byte, error) {
-	if !strings.Contains(string(content), "candidate-") {
-		return content, nil
-	}
-	var selection struct {
-		DuplicateGroups []struct {
-			Members   []string `json:"members"`
-			Canonical string   `json:"canonical"`
-		} `json:"duplicate_groups"`
-	}
-	if err := json.Unmarshal(content, &selection); err != nil {
-		return nil, err
-	}
-	var candidates struct {
-		Candidates []entityreconcile.Selector `json:"candidates"`
-	}
-	if err := json.Unmarshal(candidateContent, &candidates); err != nil {
-		return nil, err
-	}
-	selector := func(key string) entityreconcile.Selector {
-		index, err := strconv.Atoi(strings.TrimPrefix(key, "candidate-"))
-		if err != nil || index < 1 || index > len(candidates.Candidates) {
-			return entityreconcile.Selector{Name: key, SourceRefs: []entityreconcile.SourceRange{}}
-		}
-		return candidates.Candidates[index-1].Clone()
-	}
-	proposal := entityreconcile.ProposalResponse{DuplicateGroups: make([]entityreconcile.DuplicateGroup, len(selection.DuplicateGroups))}
-	for index, group := range selection.DuplicateGroups {
-		members := make([]entityreconcile.Selector, len(group.Members))
-		for memberIndex, key := range group.Members {
-			members[memberIndex] = selector(key)
-		}
-		proposal.DuplicateGroups[index] = entityreconcile.DuplicateGroup{Members: members, Canonical: selector(group.Canonical)}
-	}
-	return json.Marshal(proposal)
-}
-
 func (client *fakeNPCProductionLLMClient) requestCount(promptID string) int {
 	count := 0
 	for _, request := range client.requests {