# Commit

Create high-quality Git commits for all pending changes.

## Gathering context

Run these in parallel:

1. `git diff` - unstaged changes.
2. `git diff --cached` - staged changes.
3. `git status` - untracked files and overall state.
4. `git log --no-merges --format='%s%n%b---' -20 | grep -v '^bump:' | grep -iv dependabot` -
   recent commit message style examples.

## Running agents

After gathering context but before committing, determine which agents to run based on the changed
files. Launch each agent sequentially using the Agent tool with subagent_type `general-purpose`,
telling it to follow the corresponding `.claude/agents/<name>.md` file. Scope each agent to only the
changed files, not the entire project.

### When Python code is being committed

If any changed files are under `deltona/` or `tests/`, run the following agents **in order**:

1. **python-moderniser** - upgrade to modern Python features.
1. **click-auditor** - validate Click command consistency. **Only run if files under
   `deltona/commands/` changed.**
1. **docstring-fixer** - fix missing or incomplete docstrings.
1. **copy-editor** - fix prose in comments, docstrings, and strings.
1. **test-writer** - generate/update tests for new/changed code. **Skip if the only changes are in
   `tests/`.**
1. **qa-fixer** - format and fix lint/spelling issues.

### When user-facing changes are being committed

- **changelog** - update `CHANGELOG.md` with entries for the changes. After it completes, check if
  `CHANGELOG.md` was modified (`git diff CHANGELOG.md`). If it was, it will be staged together with
  the relevant commit. **Only run when changes affect users**: files under `deltona/`, `tests/`,
  or dependency/version changes in `pyproject.toml`. **Skip for**: workflows, CI config, `.claude/`,
  `.cursor/`, `.github/instructions/`, documentation-only changes, and other non-user-facing files.

## Analysing changes

Group changed files by component. Determine if one commit or multiple logical commits are needed.

### Incidental files

The following files do not count when determining the component prefix, unless they are the **only**
file in a commit:

- `CHANGELOG.md`
- `.vscode/dictionary.txt`

For example, if a commit contains `deltona/commands/main.py`,
`tests/test_main_command.py`, and `CHANGELOG.md`, the component is determined by
`deltona/commands/main.py` and `tests/test_main_command.py` only.
`CHANGELOG.md` is simply staged alongside them.

If `CHANGELOG.md` is the only file being committed, use the `changelog:` prefix. If
`.vscode/dictionary.txt` is the only file, use `dictionary:` prefix.

### When to split into multiple commits

- Changes span unrelated components (e.g. `deltona/media.py` and `.claude/agents/release.md`).
- A refactor and a bug fix in the same file should be separate commits.
- New tests for existing code should be separate from the code changes they test only if the code
  changes are themselves separate.
- Dictionary updates (`.vscode/dictionary.txt`) should be committed first with message
  `dictionary: update`.

### Cruft updates

When all changes are from re-running Wiswa (the project generator) and no hand-written code changed,
this is a **cruft update**. Indicators:

- Only Wiswa-managed files changed (workflows, `package.json`, `pyproject.toml`,
  `.pre-commit-config.yaml`, `.claude/agents/`, `.cursor/rules/`, `.github/instructions/`,
  `CITATION.cff`, `.vscode/dictionary.txt`, `uv.lock`, `.wiswa.jsonnet`, etc.).
- No files under the primary module or `tests/` changed.

Commit everything in a single commit with the subject `cruft: update`. Include a body summarising
what changed (e.g. new/updated workflows, updated agent files, dependency version bumps, new managed
files). Do not run any agents. Do not split into multiple commits. Do not update the changelog.

### When a single commit is fine

- All changes serve the same purpose within a closely related set of files.
- A bug fix and its test.

## Commit message format

```text
component.name: short description

Optional longer description explaining the why, not the what. Wrap at 72
characters.

Signed-off-by: Author Name <email>
Closes: #123
```

### Subject line rules

- Format: `component.name: short description`. Component name must be lowercase and must skip the
  first period if present (`vscode` not `.vscode`, `README.md` -> `readme` not `README`), and must
  omit the period with extension.
- Lowercase after the colon (unless a proper noun).
- No period at the end.
- Maximum 72 characters.
- Use imperative mood: 'add', 'fix', 'update', 'remove', not 'added', 'fixes', 'updated'.

### Component prefix rules

For Python files, strip the `deltona/` prefix and replace `/` with `.` (like module imports).

- Python file `deltona/media.py` → `media:`.
- Multiple files under `deltona/commands/` → `commands:`.
- Single command file `deltona/commands/admin.py` → `commands.admin:`.
- Workflow file `.github/workflows/qa.yml` → `workflows/qa:`.
- Multiple workflows → `workflows/*:`.
- Agent files `.claude/agents/*.md` → `.claude:` or specific agent name.
- Instruction files across all 3 locations → `project:` (since they span Copilot/Cursor/Claude).
- Test files `tests/test_media.py` → `tests/test_media:` (or `tests:` for multiple).
- Dictionary `.vscode/dictionary.txt` → `dictionary:` (only when committed alone).
- Top-level config (`pyproject.toml`, `package.json`) → `project:`.
- If changes span many unrelated areas → `project:`.
- CHANGELOG.md → `changelog:` (only when committed alone).
- CONTRIBUTING.md → `contributing:`.

### Trailers

- `Closes: #N` - when a commit closes a GitHub issue. If it is another project, use the full URI.
- `Fixes: #N` - when a commit fixes a bug reported in an issue. If it is another project, use the
  full URI.
- `Related: #N` - when a commit is related to an issue but does not fully close or fix it. If it is
  another project, use the full URI.
- `Reviewed-by:` - if applicable.
- `Co-authored-by:` - if applicable.
- `Reported-by:`: - if applicable. Could get this information from a bug report that led to the fix
  if the issue ID/URL is known.
- `Signed-off-by:` - always included on every commit. This will be added with `-s`.

## Making commits

1. Stage files for each logical commit using `git add` with specific file paths.
2. If `CHANGELOG.md` was updated by the changelog agent, stage it with the relevant commit.
3. Create a unique temp file with `mktemp /tmp/commit-msg-XXXXXXXX`, write the commit message there
   using the **Write** tool (not Bash `cat`), then commit with `git commit -S -s -F <tempfile>`.
   Multiple Claude instances may run concurrently, so never use a fixed path.
4. If a pre-commit hook fails, fix the issue, re-stage (use appropriate agent if there is one), and
   try to commit again.
5. After all commits, run `git status` to verify clean state.

## Rules

- Never use `--no-verify` or `--no-gpg-sign`.
- Amend the previous commit when the new change is logically part of it (e.g. same file, same
  topic, fixing something just committed). Create a new commit when the change is distinct.
- Never push unless explicitly asked.
- Always use `-S` for GPG signing and `-s` for sign-off.
- If there are no changes, do nothing.
- Stage specific files, never use `git add -A` or `git add .`.
