Complete documentation rebuild

docs/internal/stage-polish.md

@@ -0,0 +1,69 @@
+# Stage: polish
+
+## Purpose
+Polish merged transcript with Audita and produce a processed transcript for downstream normalization/analyze.
+
+## Inputs and Outputs
+Inputs:
+- `transcripts/merged.json`
+- `inputs/glossary.yml`
+
+Outputs:
+- `transcripts/processed.json`
+- optional `artifacts/audita.report.json` (when report enabled)
+
+## Boundaries
+Owns:
+- Merged transcript discovery/validation
+- Audita invocation request construction
+- Run-local logs/config/work-dir/report wiring
+- Promotion of processed transcript and optional report
+
+Does not own:
+- Upstream merge normalization
+- Downstream normalize/trim/analyze logic
+
+## Config Fields Used
+- `session.session_id`
+- `session.campaign`
+- `pipeline.workspace.root`
+- `pipeline.audita.binary`
+- `pipeline.audita.timeout`
+- `pipeline.audita.llm_api_key_env`
+- `pipeline.audita.modules`
+- `pipeline.audita.base_url`
+- `pipeline.audita.model`
+- `pipeline.audita.transcript_description`
+- `pipeline.audita.config_path`
+- `pipeline.audita.output_schema`
+- `pipeline.audita.work_dir_retention`
+- `pipeline.audita.total_llm_concurrency`
+- `pipeline.audita.proposal_llm_concurrency`
+- `pipeline.audita.validation_model`
+- `pipeline.audita.validation_llm_concurrency`
+- `pipeline.audita.report`
+
+## External Adapters Used
+- Audita adapter (`env.Audita.Run`).
+
+## State and Manifest Behavior
+- Reads merged transcript from merge manifest outputs when available; falls back to canonical merged path.
+- Uses run-local output/report/log/config/scratch paths when run layout is enabled.
+- Promotes canonical `transcripts/processed.json` and optional report.
+- Records adapter invocation metadata, credential presence signal, and output provenance in stage metadata.
+
+## Skip and Resume Behavior
+- Runner-level skip applies when already succeeded and not forced.
+- Forced rerun can stale downstream succeeded stages via runner invalidation.
+
+## Failure Behavior
+- Fails on missing/invalid merged transcript, missing glossary, adapter error, invalid processed output shape (`segments` array required), or invalid report JSON when enabled.
+
+## Tests to Inspect Before Changing
+- `internal/stage/polish_test.go`
+- `internal/adapters/audita/subprocess_test.go`
+
+## Architectural Invariants
+- Processed transcript must contain a top-level `segments` array.
+- Report behavior is strictly config-gated.
+- Stage output canonicalization always ends at `transcripts/processed.json`.