Tune Pipeline

/tune-pipeline

Turns accumulated pipeline signal into doctrine improvements without letting doctrine drift. The rules this skill operates under are in doctrine/constitution.md — read it first, in full, every run. The short version: propose, never impose; cite evidence; prefer sharpening to adding; no-change is a valid outcome.

Steps

1. Read the ground truth: doctrine/constitution.md, doctrine/CHANGELOG.md (what already changed, what was rejected — do not re-propose either without new evidence), then the current doctrine: every file in doctrine/, doctrine/personas/, and the draft-guide workflow under pipeline/.
2. Read the signal: everything in retro/runs/ and retro/notes/ not already cited by a changelog entry. If the corpus is large (more than ~10 run records), fan out reader subagents — one per review dimension plus one for disputes and open questions — and work from their summaries; otherwise read directly.
3. Distill patterns, looking for:
   • the same blocker category recurring across runs (which role doc or persona rule failed to prevent it?);
   • findings disputed and then re-raised — or disputed and dropped — repeatedly (ambiguous doctrine; two docs may disagree);
   • open questions recurring across providers (a gap in the Technical Research loop, not in any one guide);
   • rounds-to-convergence trending up, or reviewers passing things humans later corrected in retro/notes/ (the strongest signal — weight it highest);
   • unresolved blockers the human settled — their resolution is doctrine the docs don't state yet.
4. Draft proposals — only for patterns clearing the constitution's evidence threshold. Each proposal: the target file, the exact diff (or tight sketch), the evidence (run record filenames / note files), the invariants touched and why the change preserves or strengthens them, and what it removes or merges if it grows a doc. A pattern that implicates an invariant itself becomes a flagged tension for the human, never a proposal.
5. Present and apply: show each proposal (AskUserQuestion works well — approve / reject / edit per proposal). Apply exactly the approved diffs, nothing more. Append one doctrine/CHANGELOG.md entry for the batch: date, files, changes, evidence — and list rejected proposals with a line of reasoning so future tune runs do not nag.
6. Offer a regression check: suggest re-running mise run draft-guide -- <slug> --overwrite on a reference provider (e.g. box) and comparing rounds-to-convergence and blocker counts against its last Run Record before trusting a doctrine change that touched reviewer or writer behavior.

Hard rules

• Never edit doctrine/constitution.md. Tensions with it are reported, not resolved here.
• Never apply an unapproved diff, and never batch-approve ("apply all" from the user still means: show what will change first).
• Every applied change lands in the changelog with evidence, same turn.
• Do not propose from a single run's noise, from taste, or from this conversation's momentum — evidence lives in retro/, not in vibes.
• Leave retro/ untouched apart from reading it; records are append-only history.
• Never commit or push; leave doctrine diffs in the working tree for human review like any other change.