Move LLM validators to PromptKit prompt variables

docs/internal/validators.md

@@ -51,11 +51,15 @@ Decision cardinality is enforced: each candidate proposal must receive exactly o
 
 LLM validators:
 - build canonical validation request payloads;
-- batch using the [configured prompt budget](../config.md#concurrency);
-- call structured LLM client using response schema registry.
+- batch using `validation.max_prompt_tokens` and the existing domain token estimator;
+- select an embedded prompt ID and pass payload/description variables to the
+  role-bound structured client with the validator-decision schema.
 
 Oversized single proposals are rejected with `validator_input_too_large`.
-Malformed LLM validator responses are downgraded to warnings and rejected batch decisions.
+Exhausted structural repair becomes a warning and rejected batch decisions.
+Provider, malformed HTTP envelope, deadline, and admission failures propagate
+as runtime errors. Schema-valid decisions still undergo exact index/cardinality
+checks and domain acceptance without a semantic retry.
 
 ## Decision and Rejection Reporting
 

docs/roadmap/implementation.md

@@ -318,9 +318,11 @@ key and diagnostic context through the prepared client, retaining ordering,
 warnings, and later domain validation. Updated proposal and module tests and
 module internals documentation. The isolated variable-encoding test passed with
 `go test internal/framework/proposal_generation/variables.go internal/framework/proposal_generation/variables_test.go`;
-`git diff --check` passed. Assembled proposal/module tests are deferred because
-Stage 7's validator imports still reference removed message-rendering types.
-The repaired-proposal/domain integration check remains deferred with those imports.
+`git diff --check` passed. After the validator imports were migrated,
+`go test ./internal/framework/proposal_generation ./internal/modules/glossary
+./internal/modules/homophones ./internal/modules/spoken_word ./internal/modules/grammar`
+passed. A controlled HTTP integration test confirmed that repaired proposals
+reach low-confidence and missing-original-text domain checks without an extra call.
 **Depends on:** Stage 5.
 **Owns:** `internal/modules`, `internal/framework/proposal_generation`, and their tests.
 
@@ -343,7 +345,18 @@ ordering. Run the module and proposal-generation suites as imports become builda
 
 ## Stage 7: Migrate LLM Validators Without Changing Domain Decisions
 
-**Status:** Pending. **Depends on:** Stage 6.
+**Status:** Complete (2026-09-24). All five LLM validator types now select
+embedded prompt IDs and shared payload variables. Kept domain batching,
+preview, index/cardinality, and deterministic validation; exhausted repair
+rejects/warns while provider/protocol failures propagate. Removed duplicate
+message builders and per-validator model selection. Updated internal validator
+documentation. `go test ./internal/framework/validators
+./internal/framework/proposal_generation ./internal/modules/glossary
+./internal/modules/homophones ./internal/modules/spoken_word
+./internal/modules/grammar ./internal/validators/... ./internal/core/config`
+passed, including controlled HTTP repair and malformed-envelope cases;
+`git diff --check` passed. Full runner behavior remains for Stage 8.
+**Depends on:** Stage 6.
 **Owns:** `internal/framework/validators`, validation prompt builders/batching,
 and validator tests.