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skills/commit-messages/SKILL.md

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+---
+name: Generating JJ Commit Messages
+description: Generate descriptive commit messages for jujutsu repositories. Use when creating commits, describing changes, or when the user asks for commit message help. Follows conventional commit format and project conventions.
+allowed-tools: Bash(jj status:*), Bash(jj diff:*), Bash(jj log:*)
+---
+
+# Generating JJ Commit Messages
+
+## Format
+
+**Summary line:** `type(scope): brief description` (under 72 chars)
+
+**Body (optional):** Blank line, then detailed explanation with bullets
+
+**Footer:**
+
+```
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+Co-Authored-By: Claude <noreply@anthropic.com>
+```
+
+## Conventional Commit Types
+
+| Type         | Use Case           | Example                                    |
+| ------------ | ------------------ | ------------------------------------------ |
+| **feat**     | New features       | `feat(auth): implement JWT authentication` |
+| **fix**      | Bug fixes          | `fix(login): correct password validation`  |
+| **refactor** | Code restructuring | `refactor(auth): extract token helper`     |
+| **docs**     | Documentation      | `docs(api): update auth examples`          |
+| **test**     | Tests              | `test(auth): add login flow tests`         |
+| **chore**    | Maintenance        | `chore(deps): upgrade to Python 3.12`      |
+| **style**    | Formatting         | `style(auth): format with black`           |
+| **perf**     | Performance        | `perf(db): optimize query with index`      |
+| **ci**       | CI/CD              | `ci: add automated testing workflow`       |
+| **build**    | Build system       | `build(nix): update flake inputs`          |
+
+## Quick Guidelines
+
+- Use imperative mood: "Add" not "Added"
+- Be specific: "Fix memory leak in parser" not "Fix bug"
+- Scope is optional but helpful: `feat(auth): ...` or just `feat: ...`
+- Keep summary under 72 characters
+- Add body with bullets for complex changes