Update documentation for the new analyze stage and artifact registry

docs/internal/README.md

@@ -4,13 +4,13 @@
 Developers and LLM coding agents changing Narratio internals.
 
 ## Scope
-Implementation-accurate contracts for workspace/state, stages, and external adapter boundaries.
+Implementation-accurate contracts for workspace/state, manifests, stages, artifact resolution, and adapter boundaries.
 
 ## Component Docs
 - `adapters.md`: external adapter map, runtime wiring, and boundary ownership.
 - `storage.md`: remote storage backend contracts and object-store invariants.
 - `manifest.md`: session/run manifest schemas, lifecycle transitions, and persistence semantics.
-- `artifacts.md`: supported artifact IDs, transcript tiers, and source-resolution behavior.
+- `artifacts.md`: built-in artifact registry, runtime artifact catalog, and source-resolution behavior.
 - `workspace.md`: local state model, manifests, run-local layout, promotion, and cleanup invariants.
 - `stage-prepare.md`: input materialization and provenance capture.
 - `stage-transcribe.md`: WhisperX transcript generation.
@@ -18,7 +18,7 @@ Implementation-accurate contracts for workspace/state, stages, and external adap
 - `stage-polish.md`: Audita transcript polishing.
 - `stage-normalize.md`: post-polish normalization.
 - `stage-trim.md`: bounds-driven transcript trimming.
-- `stage-analyze.md`: Scriptorium session recap generation.
+- `stage-analyze.md`: dependency-ordered Scriptorium artifact generation for selected configured artifacts.
 - `stage-archive.md`: archive upload and current-pointer publish contract.
 
 ## External Integration Notes