🐛 fix(commit-message): resolve policy and staged boundaries

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csh
2026-07-20 09:08:37 +08:00
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@@ -7,92 +7,86 @@ description: "Use when the user asks for help writing a commit message, wants em
## Overview ## Overview
Turn a staged diff into a commit recommendation that matches repository policy. Create a repository-compliant recommendation from the staged diff. Resolve its
Core principle: understand staged intent and commit boundaries before drafting the boundary and enforced rules before drafting.
message.
Authority source:
- `docs/common/commit_message.md`
- `docs/standards/playbook/docs/common/commit_message.md` (vendored playbook)
## When to Use ## When to Use
- The user asks to write or improve a commit message Use for commit-message drafting, staged-boundary review, split decisions, or
- The user wants emoji/type(scope): subject formatting emoji/type(scope): subject formatting.
- The user asks whether current staged changes should be split before commit
- The user asks to review staged changes before running `git commit`
## When Not to Use ## When Not to Use
- No staged changes exist and the user expects a final commit message based on the Do not use for PR titles, release notes, changelogs, or exact-message execution.
actual staged diff
- The task is writing a PR title, release note, or changelog instead of a git
commit message
- The user already provided an exact commit message and only wants it executed
## Inputs ## Inputs
- Current staging state (`git status --short`, `git diff --cached`) Use staged/unstaged state and repository policy.
- Nearest applicable `commit_message.md`
- Whether the user wants suggestions only or a command-ready final message
## Procedure ## Procedure
1. **Baseline the repo state** 1. **Baseline state**
- Inspect staged and unstaged state separately. - Inspect staged and unstaged changes separately.
- If nothing is staged, stop. Explain that a staged-diff-based recommendation - If nothing is staged, do not produce a final diff-based message. Offer an
is unavailable and ask whether files should be staged first. unstaged draft only when explicitly requested.
- If only unstaged changes exist, stop before proposing a final message. Offer - Record the staged file list and summary for the final consistency check.
a draft only if the user explicitly wants one.
2. **Load the authority spec** 2. **Resolve effective policy**
- Prefer the nearest `commit_message.md`. - Read applicable repository instructions, mechanical enforcement
- Reuse its type, emoji, scope, and body/footer conventions exactly. (`commitlint`, hooks, CI workflow/env, validation scripts), then the nearest
`commit_message.md`.
- Effective enforcement overrides optional prose defaults. Report conflicts
and use a form accepted by both whenever possible.
- With no repository policy, state and use this Conventional Commits fallback:
`type(scope): subject`; optional scope; type from `feat`, `fix`, `docs`,
`style`, `refactor`, `perf`, `test`, `build`, `ci`, `chore`, or `revert`; no
emoji; imperative lowercase subject, at most 72 characters, no final period.
3. **Summarize staged intent** 3. **Classify the boundary**
- Read the staged diff at the smallest useful granularity. - Identify the dominant intent and required coupled changes.
- Identify the main logical change, affected areas, and whether the staged set - For unrelated intents, stop before drafting a combined message. Output
mixes unrelated work. ordered groups with files, intent, and a provisional message for each.
- If staged changes combine unrelated goals, strongly recommend splitting the commit - Continue with one combined message only after the user explicitly opts out
before drafting a single message. In other words, strongly recommend splitting of the recommended split.
the commit instead of hiding multiple intents behind one subject.
4. **Draft message options** 4. **Draft and validate**
- Produce one recommended option and up to two alternatives. - Produce one recommendation. Add alternatives only when materially distinct
- Keep the subject concrete, specific, and under the repo limit. valid type or scope interpretations remain.
- Use body/footer only when they add real context such as motivation, impact, - Add body/footer only for motivation, impact, verification, issue links, or
verification, issue links, or breaking-change notes. breaking changes.
- Use a repository validator when it accepts candidate input. Otherwise check
type, emoji, scope, length, subject, body, and footer manually. A HEAD-only
check does not validate a candidate.
- Rerun the staged summary before finalizing. If it changed, reread the diff
and restart classification.
5. **Finalize safely** 5. **Finalize safely**
- Make it explicit whether the output is a suggestion or a final chosen message. Label the result as a suggestion or final choice. Run `git commit` only after
- Do not run `git commit` unless the user explicitly asks for execution after explicit user authorization.
reviewing the recommendation.
## Output Contract ## Output Contract
- `Detected:` staged files summary, dominant intent, and split/no-split judgment | State | Required output |
- `Spec:` which `commit_message.md` was used | --- | --- |
- `Proposed:` Option A (recommended), Option B, Option C | Single intent | `Detected`, `Spec`, one `Proposed`, `Validation`, optional body/footer and materially distinct alternatives |
- `Optional body/footer:` only when justified | Mixed intents | `Detected`, `Split` groups, and `Notes`; no combined `Proposed` until the user opts out of splitting |
- `Notes:` risks, ambiguity, or split advice
`Spec` names the source, enforcement, and conflicts. `Validation` names the
validator result or manual checks.
## Success Criteria ## Success Criteria
- The recommendation matches the staged diff rather than guessed intent - Output matches the current staged diff and effective policy
- The selected format complies with the nearest commit policy - Mixed work yields a split plan, not a disguised combined message
- Split advice appears when staged changes are logically mixed - Every candidate is validated; filler alternatives are omitted
- No commit command is executed unless the user asked for it - No commit runs without explicit authorization
## Failure Handling ## Failure Handling
- If no staged diff exists, stop and explain the limitation instead of inventing a No staged diff: explain and stop. No policy: state the fallback. Conflicts:
final message report them and use the stricter accepted form. Changed staging: restart.
- If the staged set is too broad or ambiguous, recommend splitting and explain why
- If no local policy file is found, state the fallback convention before drafting
- If repo state changes during review, rerun the staged summary before finalizing