Document evidence context source unit excerpts

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2026-08-09 19:47:27 +00:00
parent 449b506804
commit f6d037b613
6 changed files with 82 additions and 90 deletions

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@@ -319,7 +319,8 @@ Unknown outer or nested option fields are rejected, as are incompatible YAML
types. The allowlist remains valid when a run uses lane filtering: a configured
lane that is not active for that invocation simply contributes no evidence.
Evidence publication is opt-in because it can persist source text and metadata.
Its payload contract is [Published Evidence Context](integrations/evidence-context.md).
When enabled, it publishes the selected source-unit excerpt defined by the
[Published Evidence Context contract](integrations/evidence-context.md).
## References And Ordered Handoffs

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@@ -55,10 +55,10 @@ contract. The JSON bundle contract links to the available lane contracts.
If `index.json` has an `evidence_context` descriptor, treat it as a
pipeline-wide artifact rather than a lane entry. Verify its six descriptor
fields before decoding the linked file according to the [Published Evidence
Context contract](../integrations/evidence-context.md). Use each
`evidence_refs` entry as the citation to source material. Its surrounding
context range and included units explain the citation, but do not widen or
replace the cited source reference.
Context contract](../integrations/evidence-context.md). Decode its top-level
source-unit array as a reading excerpt. Obtain authoritative citations and lane
provenance from the normalized lane artifacts; the excerpt has neither and its
nearby units do not widen a lane artifact's cited source reference.
A zero exit status may still report rejected outputs, warnings, or absent
lanes. The caller decides which lane IDs are required for its own work and
@@ -73,5 +73,5 @@ them. Treat the input, output bundle, cache, debug bundle, and captured process
logs as potentially sensitive data. Apply the caller's access controls and
retention policy, and avoid copying secrets into arguments, logs, or
provenance records. An evidence-context artifact contains source-unit text and
metadata, and selected lanes can cover most of an input; preserve and share it
only when that source content is authorized for the recipient.
metadata and can cover most of an input; preserve and share it only when that
source content is authorized for the recipient.

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@@ -1,9 +1,11 @@
# Published Evidence Context
This contract defines the optional `source/evidence-context` artifact emitted
by the production JSON output. Its configuration is owned by
[Configuration](../config.md#module-bindings-and-validators); its logical-file
discovery is owned by [Published JSON Output](json-output.md).
by the production JSON output. It is a selected source-unit excerpt for
convenient reading alongside normalized lane artifacts; it is not a second
citation or provenance model. Its configuration is owned by
[Configuration](../config.md#module-bindings-and-validators), and its
logical-file discovery is owned by [Published JSON Output](json-output.md).
## Identity And Discovery
@@ -26,91 +28,79 @@ its absence means evidence publication was not enabled for that bundle.
## Payload
The v1 payload is a JSON object with required `source_id`, `source_digest`,
`window_units`, `selected_lanes`, and `contexts` fields. `selected_lanes` and
`contexts` are always arrays; an enabled configuration with no accepted direct
evidence publishes `contexts: []`.
The v1 payload is a top-level JSON array of generic source units. There is no
wrapper, source-level metadata, context grouping, lane identifier, or evidence
reference in the payload. An enabled configuration with no contributing
accepted evidence publishes `[]`.
```json
{
"source_id": "session-alpha",
"source_digest": "sha256:0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
"window_units": 1,
"selected_lanes": ["npc_registry", "spells"],
"contexts": [
{
"context_ref": {
"source_id": "session-alpha",
"start_unit_id": 10,
"end_unit_id": 20
},
"evidence_refs": [
{
"lane_id": "spells",
"source_ref": {
"source_id": "session-alpha",
"start_unit_id": 10,
"end_unit_id": 10
}
}
],
"units": [
{
"id": 10,
"kind": "transcript_segment",
"text": "Aria casts Cure Wounds.",
"ref": {
"source_id": "session-alpha",
"start_unit_id": 10,
"end_unit_id": 10
}
},
{
"id": 20,
"kind": "transcript_segment",
"text": "The party regroups.",
"ref": {
"source_id": "session-alpha",
"start_unit_id": 20,
"end_unit_id": 20
}
}
]
[
{
"id": 10,
"kind": "transcript_segment",
"text": "Aria casts Cure Wounds.",
"ref": {
"source_id": "session-alpha",
"start_unit_id": 10,
"end_unit_id": 10
}
]
}
},
{
"id": 20,
"kind": "transcript_segment",
"text": "The party regroups.",
"ref": {
"source_id": "session-alpha",
"start_unit_id": 20,
"end_unit_id": 20
}
}
]
```
Each context requires a `context_ref` object and `evidence_refs` and `units`
arrays. `context_ref` identifies the first and last included unit. Each
evidence entry contains a selected `lane_id` and an original `source_ref`. A
unit uses the existing source-unit shape: required `id`, `kind`, `text`, and
self `ref`, plus optional JSON-object `metadata`. Fixed payload objects reject
unknown fields; unit metadata may contain application-defined JSON values.
Each source unit has required `id`, `kind`, `text`, and self `ref` fields.
`ref` contains `source_id`, `start_unit_id`, and `end_unit_id`, and both unit
endpoints identify that unit's `id`. A unit may also contain source-owned
`metadata`, an open-ended JSON object. Fixed unit and reference fields are
strict: consumers must reject unknown fixed fields, malformed units, invalid
self-references, and a payload that is not the array described here.
## Citations And Context
The excerpt preserves each selected unit exactly as represented by the
validated generic source document. It does not add evidence-context-specific
annotations or reshape source-owned metadata.
`evidence_refs` are the authoritative citations. They identify the direct
references emitted by accepted normalized artifacts. `context_ref` and the
units collection include those cited units plus nearby source units selected by
the configured window. They are explanatory context, not widened citations.
## Selection And Citations
Only accepted outputs from the configured lane allowlist contribute. Rejected,
failed, absent, and lane-filtered outputs do not contribute. The artifact never
contains raw input bytes, prompts, model responses, auxiliary reference
content, credentials, or filesystem paths.
The framework obtains direct source references only through typed evidence
projections of accepted normalized artifacts in the configured lane allowlist.
It validates each reference against the current source document, expands its
range by `window_units` source-unit positions on each side, clamps at document
boundaries, and takes the union of all expanded ranges. The output contains
each selected source unit once in source-document position order, regardless
of numeric unit IDs. Repeated references, overlapping windows, and citations
from multiple lanes do not duplicate a unit. Rejected, failed, absent,
inactive, and unselected lanes contribute nothing.
## Ordering And Compatibility
Normalized lane artifacts remain authoritative for citations and for which lane
cited a range. The excerpt has no lane attribution and must not be used to
reconstruct it. Its included nearby units provide reading context only; they
do not widen any citation in a lane artifact.
The selected lane allowlist is lexical. Contexts and units are in source
document position order, not numeric unit-ID order. Direct evidence entries
are deterministically ordered by lane and source reference. Overlapping or
contiguous windows merge, and each source unit appears at most once in the
resulting contexts.
The excerpt contains at most every generic source unit once. It can therefore
equal the complete generic source document when coverage is broad or the
window is large. No byte-, token-, or compression-size guarantee is made, and
the framework does not truncate the excerpt to meet an arbitrary size limit.
## Consumer Responsibilities And Data Handling
The artifact is additive to the JSON bundle and is not a lane payload,
normalized-output count, checkpoint, or generated reference. Consumers that
do not need it must tolerate the absent optional descriptor. Consumers that do
use it should preserve the artifact and its schema identity with the run
provenance, and should treat its source text and metadata as sensitive durable
content.
do not need it must tolerate an absent descriptor. Consumers that do use it
should validate the descriptor and payload before use, retain the artifact with
its schema identity when needed for a run record, and read citations from the
corresponding normalized lane artifacts.
The excerpt contains source-unit text and source-owned metadata and is durable
output. Treat it as sensitive source content, apply appropriate access controls
and retention, and do not assume its selected form is materially smaller or
less sensitive than the original input.

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@@ -24,7 +24,7 @@ root for the logical discovery described here.
| `warnings.json` | Accepted-output and run warnings. |
| `lanes/<safe-lane-id>.json` | One normalized artifact payload for each lane. |
| `chunk-map.json` | Optional accepted chunk map, when its export is enabled and available. |
| `evidence-context.json` | Optional source-context artifact, when evidence publication is enabled. |
| `evidence-context.json` | Optional selected source-unit excerpt, when evidence publication is enabled. |
JSON files are pretty-printed with a trailing newline. Lane payloads are
accepted only when their media type is `application/json`.

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@@ -42,7 +42,8 @@ generic source references and must use the codec's exact Go type. It does not
interpret surrounding context or publish files; the pipeline validates the
capability during preparation and the output boundary owns publication. See
the [Published Evidence Context contract](../integrations/evidence-context.md)
for the durable result.
for the durable source-unit excerpt. Lane artifacts retain citation and lane
provenance; the framework does not add either to that published excerpt.
An artifact family is broader than a module: it owns the cohesive domain
feature across its artifact type, codec, stage modules, validators, prompt

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@@ -110,9 +110,9 @@ are defined in [Accepted Chunk Map](integrations/chunk-map.md). An optional
[evidence context](integrations/evidence-context.md) contains source-unit text
and metadata. It is not a cache or debug artifact: retain it with the output
bundle only for as long as consumers need it, and apply source-content access
controls to the entire bundle. Selected lanes may collectively cite most of a
transcript, so a broad allowlist can make the evidence artifact nearly as
sensitive and large as the source itself.
controls to the entire bundle. Its selected source-unit excerpt may include
every source unit once when coverage is broad or its configured window is
large, so do not assume a byte or token reduction or reduced sensitivity.
## Chunk-Plan Cache