Finish render rollout with markdown publish defaults, analyze guidance, and docs updates

docs/internal/README.md

@@ -20,9 +20,10 @@ Canonical stage order from `internal/stage.All()`:
 4. `polish`
 5. `normalize`
 6. `trim`
-7. `analyze`
-8. `publish`
-9. `notify` (placeholder)
+7. `render`
+8. `analyze`
+9. `publish`
+10. `notify` (placeholder)
 
 `notify` is currently a placeholder stage with optional notifier call behavior; it has no persisted pipeline outputs.
 
@@ -39,5 +40,6 @@ Canonical stage order from `internal/stage.All()`:
 - `stage-polish.md`
 - `stage-normalize.md`
 - `stage-trim.md`
+- `stage-render.md`
 - `stage-analyze.md`
 - `stage-publish.md`

docs/internal/artifacts.md

@@ -9,6 +9,8 @@ Define canonical artifact IDs, runtime catalog behavior, source resolution rules
 - `narratio.transcript.polished` -> `transcripts/polished.json` (`polish`)
 - `narratio.transcript.final` -> `transcripts/final.json` (`normalize`)
 - `narratio.transcript.final_trimmed` -> `transcripts/final.trimmed.json` (`trim`)
+- `narratio.transcript.final_markdown` -> `transcripts/final.md` (`render`)
+- `narratio.transcript.final_trimmed_markdown` -> `transcripts/final.trimmed.md` (`render`)
 - `narratio.bounds.session` -> `artifacts/session_bounds.json` (`trim`)
 
 ## Configured and Previous-Session Sources
@@ -53,7 +55,8 @@ Previous-session sources (`narratio.previous_session.artifact.*`):
 
 Validation by content type:
 
-- transcript built-ins: JSON with top-level `segments` array;
+- transcript JSON built-ins: JSON with top-level `segments` array;
+- transcript Markdown built-ins: non-empty text file;
 - bounds built-in: valid JSON;
 - configured/previous-session artifact files: non-empty text file.
 

docs/internal/stage-analyze.md

@@ -30,6 +30,7 @@ Supported source families:
 ## Failure Semantics
 - required missing configured/previous-session inputs fail.
 - missing required previous-session source includes prepare rerun guidance.
+- missing required `narratio.transcript.final_markdown` or `narratio.transcript.final_trimmed_markdown` inputs includes render rerun guidance.
 - dependency cycles or unavailable required dependencies fail.
 - adapter validation failures fail stage.
 

docs/internal/stage-publish.md

@@ -4,7 +4,7 @@
 Upload run/session outputs to object storage and atomically advance remote current state.
 
 ## Inputs
-- successful prerequisite stages: `prepare`, `transcribe`, `merge`, `polish`, `normalize`, `trim`, `analyze`
+- successful prerequisite stages: `prepare`, `transcribe`, `merge`, `polish`, `normalize`, `trim`, `render`, `analyze`
 - run root `runs/{run_id}/**`
 - publish output rules (`pipeline.publish.outputs`)
 - effective publish locks (static + remote merged lock set)

docs/internal/stage-render.md

@@ -0,0 +1,29 @@
+# Stage: render
+
+## Purpose
+Render Markdown transcript artifacts from normalized JSON transcripts via Seriatim.
+
+## Inputs
+- `narratio.transcript.final` (`transcripts/final.json`)
+- `narratio.transcript.final_trimmed` (`transcripts/final.trimmed.json`)
+
+## Outputs
+- `narratio.transcript.final_markdown` -> `transcripts/final.md`
+- `narratio.transcript.final_trimmed_markdown` -> `transcripts/final.trimmed.md`
+
+## Key Behavior
+- uses `pipeline.render` settings (enabled/format/title/booleans).
+- resolves inputs manifest-first, then canonical fallback.
+- writes run-local outputs first, then materializes canonical session outputs.
+- records input provenance, output paths, adapter metadata, logs, and generated config refs.
+- skips with stage metadata when `pipeline.render.enabled=false`.
+
+## Failure Semantics
+- missing normalized input fails with normalize rerun guidance.
+- missing trimmed input fails with trim rerun guidance.
+- adapter/subprocess failure fails stage.
+- empty render output files fail validation.
+
+## Invariants
+- only `format: markdown` is supported.
+- render stage owns production of built-in Markdown transcript sources.