narratio

narratio is a Go-based orchestration application for processing D&D session audio into transcripts and downstream artifacts.

This repository currently contains a working scaffold with strict config loading, local workdir/manifest handling, resumable stage control, real WhisperX/Seriatim/Audita adapters, and real prepare + transcribe + merge + polish stages.

Expected Config Files

narratio expects two YAML files:

• pipeline.yml: pipeline/workspace settings (workspace, storage, whisperx, seriatim, audita, analyzer, notification)
• session.yml: per-session settings (session_id, inputs, optional metadata)

WhisperX config contract in pipeline.yml:

• required: whisperx.transcribe_url
• defaulted when omitted: whisperx.language (en), whisperx.timeout (30m), whisperx.retries (3), whisperx.retry_delay (2s), whisperx.concurrency (2)

Seriatim config contract in pipeline.yml:

• required: seriatim.binary (name or path; existence is checked at execution time, not config validation time)
• defaulted when omitted: seriatim.timeout (10m), seriatim.output_schema (seriatim-intermediate), seriatim.coalesce_gap (3.0), seriatim.report (true)
• allowed seriatim.output_schema values: seriatim-minimal, seriatim-intermediate, seriatim-full
• optional tuning: seriatim.env.* (overlap_word_run_gap, overlap_word_run_reorder_window, backchannel_max_duration, filler_max_duration) must be > 0 when provided

Audita config contract in pipeline.yml:

• required: audita.binary (name or path; existence is checked at execution time, not config validation time)
• optional: audita.llm_api_key_env (environment variable name holding the API key secret; no automatic default)
• defaulted when omitted: audita.timeout (3h), audita.modules (glossary,homophones,glossary,spoken_word,grammar,homophones,glossary), audita.base_url (https://openrouter.ai/api/v1), audita.model (openrouter/google/gemma-4-31b-it), audita.llm_concurrency (1), audita.validation_model (""), audita.validation_llm_concurrency (1), audita.report (true)
• allowed audita.modules values: glossary, homophones, spoken_word, grammar (order and repeats are allowed)
• audita.base_url must be a valid URL when provided
• audita.llm_concurrency and audita.validation_llm_concurrency must be > 0

Audita credentials note:

• store only the environment variable name in config (audita.llm_api_key_env), never the API key value itself
• API key values must not be written to pipeline config, generated configs, logs, or manifest metadata
• if audita.llm_api_key_env is configured and the named env var is not set (or is empty), Narratio fails before invocation with a redacted error
• if audita.llm_api_key_env is omitted/empty, Narratio does not require a credential and omits AUDITA_LLM_API_KEY from the subprocess overrides

Audita runtime note:

• Narratio currently passes primary LLM concurrency via AUDITA_LLM_CONCURRENCY subprocess environment override, not a --llm-concurrency flag.

speakers.yml note:

• use Seriatim’s documented match: format (not the legacy direct mapping style used by older scripts/scaffolds)
• see examples/speakers.yml for a concrete match: example.

Prepared inputs note:

• prepare copies session inputs into the session workdir (work/<session_id>/inputs), and downstream stages consume those prepared copies, not the original source files.
• If you edit speakers.yml, autocorrect.yml, glossary.yml, or session input paths after prepare has run, rerun prepare with --force before rerunning downstream stages.

Decoding is strict (KnownFields(true)), so unknown YAML fields fail fast.

Example minimal files are available under examples/:

• examples/pipeline.minimal.yml
• examples/session.minimal.yml

Current Scaffold Status

Implemented now:

• strict config load + validation
• local artifact/workdir creation and locking
• manifest create/load/save and stage status tracking
• stage framework with real prepare, transcribe, merge, and polish stages; placeholder downstream stages
• resumable run control (run, resume, run-stage, plan with run/skip decisions)
• real WhisperX HTTP adapter plus real Seriatim/Audita subprocess adapters (with fake/no-op adapters for test/scaffold usage)

Not implemented yet:

• real analyzer integration
• real remote archive/storage backend
• real notification backend

Run Tests

go test ./...

Run Plan

go run ./cmd/narratio plan --config examples/pipeline.minimal.yml --session examples/session.minimal.yml

Run Pipeline (Current State)

The current run command executes prepare + real transcribe + real merge + real polish + placeholder downstream stages and records progress in manifest.json.

Default CLI wiring builds and uses:

• real WhisperX HTTP adapter from pipeline.whisperx
• real Seriatim subprocess adapter from pipeline.seriatim
• real Audita subprocess adapter from pipeline.audita

Subprocess runtime note:

• subprocesses inherit the parent environment by default, then apply Narratio override values (override values win).
• non-zero subprocess errors include stdout/stderr log paths and a short redacted stderr tail when available to speed diagnosis.

Real polish stage output paths:

• transcripts/processed.json
• artifacts/audita.report.json (when audita.report: true)
• artifacts/audita-work
• logs/audita.stdout.log
• logs/audita.stderr.log
• config/audita.generated.yml

go run ./cmd/narratio run --config examples/pipeline.minimal.yml --session examples/session.minimal.yml