Enable correction-aware foundational D&D producers

docs/internal/dnd.md

@@ -42,6 +42,13 @@ unknown fields, while preserving semantic candidates for deterministic
 validation. Do not promote a private response envelope into a durable schema;
 the contracts above define durable data.
 
+A D&D producer that declares `single_response_v1` forwards any supplied
+semantic correction to its structured completion and returns an owned copy of
+that completion's exact validated raw response as its model candidate. It does
+not serialize normalized artifacts to create that candidate, so deterministic
+identity, evidence, warning, and durable-schema behavior remains separate from
+the model transport material.
+
 ## Prompt Construction
 
 D&D LLM-facing content lives beneath `assets/dnd/`. Each module contributes a

docs/roadmap/implementation.md

@@ -312,7 +312,7 @@ changing ordinary requests.
 Notarius has one safe, tested adapter path for fresh corrected requests, and no
 stage invokes it yet. This stage is one Terra prompt.
 
-## Stage 6 — Migrate The Scene Chunker And Foundational Extractors
+## Stage 6 — Migrate The Scene Chunker And Foundational Extractors ✅
 
 ### Goal