Implements the `experiment-finalize` CLI command (FN-4222) and its companion dashboard API route, wiring the feature through the pi extension as a new callable tool. Includes the command implementation, extension tooling, API integration, and corresponding test coverage. Fusion-Task-Id: FN-4222
57 lines
1.8 KiB
Markdown
57 lines
1.8 KiB
Markdown
# Experiment Session Finalize Workflow
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## Motivation
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FN-4136 identified a gap versus upstream `autoresearch-finalize`: Fusion had no workflow to split kept experiment commits into reviewable branches from a shared merge-base.
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## Plan model
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Finalize builds groups of kept run records, each with ordered commits and a suggested branch name. Branch names default to:
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`experiment/<session-id>/<slug>-<index>`
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Override schema:
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```json
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{
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"groups": [
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{
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"id": "segment:1",
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"title": "Latency fixes",
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"suggestedBranchName": "experiment/exp-1/latency-fixes-1",
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"runRecordIds": ["RUN-2", "RUN-5"]
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}
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]
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}
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```
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## Algorithm
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1. Resolve merge-base from session baseline ref and integration branch.
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2. Build default plan from kept runs.
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3. Apply optional override and validate run IDs / branch uniqueness.
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4. For each group: create branch at merge-base, checkout, cherry-pick commits in order.
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5. Restore original ref.
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6. Append `finalize` session record and move session to `finalized`.
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7. On failure, rollback created branches and restore original ref; session remains `finalizing`.
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## Error taxonomy
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| Error code | CLI exit | HTTP status |
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|---|---:|---:|
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| `state_error` | 2 | 409 |
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| `no_kept_runs` | 3 | 409 |
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| `plan_error` | 4 | 400 |
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| `merge_base_error` | 5 | 422 |
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| `cherry_pick_conflict` | 6 | 422 |
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| `branch_exists` | 7 | 409 |
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| unknown/untyped | 1 | 500 |
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## Recovery
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If finalize fails after session status moves to `finalizing`:
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1. Inspect and delete leftover branches (`git branch -D <name>`).
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2. Restore session status manually via store update to `active`.
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3. Re-run finalize (optionally with a plan override).
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## Follow-ups
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- FN-4221: dashboard finalize UI wiring.
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- FN-4223: naming clarifications around research/experiment command surfaces.
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- Upstream reference: `autoresearch-finalize` branch-split semantics.
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