# Archive Storage

This document describes implemented archive-stage publish behavior.

## S3 Paths

Session root:

`{root_prefix}/campaigns/{campaign}/sessions/{session_id}/`

Run prefix:

`{root_prefix}/campaigns/{campaign}/sessions/{session_id}/runs/{run_id}/`

## Scope

Implemented:

- archive uploads successful run records to remote object storage through the storage backend abstraction.
- archive uploads configured promoted outputs to session-level keys.
- archive uploads `current/manifest.json`.
- archive uploads `current/run_id.txt` last as the effective commit marker.
- tests use fake storage and do not require live S3.

Future work:

- spool audio cleanup/deletion behavior
- `notify` stage behavior
- stale detection
- optional future source-audio upload mode
- additional artifact generation beyond current implemented set

## Prerequisites

Archive verifies these stages succeeded before upload:

- `prepare`
- `transcribe`
- `merge`
- `polish`
- `normalize`
- `trim`
- `analyze`

If any prerequisite is missing or not succeeded, archive fails and does not upload.
Failed or incomplete runs remain local only.

## Run Upload

Archive uploads existing files from the run workdir when present:

- `inputs/`
- `transcripts/`
- `artifacts/`
- `reports/` (optional)
- `config/`
- `logs/`
- `manifest.json`

Relative paths are preserved under `runs/{run_id}/`.

## Promotion Rules

Archive applies `archive.promote_artifacts` in config order.

Rule behavior:

- `from`: local workdir-relative source path
- `to`: session-root-relative destination key
- `required: true`: missing source fails archive
- `required: false`: missing source is skipped and recorded

Default promoted outputs:

- `transcripts/trimmed.json`
- `artifacts/session_recap.md`

## Current Pointers

Archive writes:

1. `current/manifest.json` (after run upload + promotions)
2. `current/run_id.txt` last

`current/run_id.txt` contains exactly:

- `{run_id}` plus trailing newline

Writing `current/run_id.txt` last makes it the effective commit marker for published session state.

If any required run upload, promotion upload, or current-manifest upload fails, archive returns failure and does not write `current/run_id.txt`.

## Audio Upload Policy

Archive does not upload local `audio/` by default.
Original audio is expected at the session-level audio prefix and is not duplicated under `runs/{run_id}/`.

## Config Controls

- `archive.enabled: false` skips archive cleanly.
- `archive.upload_run: false` skips run upload cleanly.

## Metadata

Archive stage metadata includes non-secret upload context (for example):

- `s3_bucket`
- `s3_run_prefix`
- run upload counts/paths
- promoted upload counts/paths
- skipped optional promotions
- `current_manifest_key`
- `current_run_id_key`
- `current_pointer_written`
- `audio_upload_skipped`