.claude: add write-git-commit skill

Author: jamiebrynes7

.claude/skills/write-git-commit/SKILL.md

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+---
+name: write-git-commit
+description: Create a git commit following repository conventions
+---
+
+# Git Commit
+
+Create git commits following the repository's established conventions.
+
+## Commit Message Format
+
+```
+<scope>: <subject>
+
+[optional body]
+```
+
+## Scope
+
+The scope indicates which part of the codebase is affected:
+
+- `plugin` - Plugin source code changes (most common)
+- `docs` - Documentation changes
+- `scripts` - Build/release script changes
+- `.github` - GitHub workflows and actions
+- `.claude` - Claude configuration and skills
+- `.vscode` - VS Code settings
+- `*` - Changes spanning multiple packages/areas
+
+For focused changes within a scope, you may use a more specific prefix like `plugin api`, `plugin settings`, etc.
+
+## Subject Line
+
+- Use lowercase after the colon
+- Use imperative mood ("add feature" not "added feature")
+- No period at the end
+- Keep concise (ideally under 72 characters total)
+
+Examples:
+
+- `plugin: add support for task filtering`
+- `docs: update query-blocks documentation`
+- `*: bump versions across the board`
+- `.github: add separate build job`
+
+## Body (Optional)
+
+- Separate from subject with a blank line
+- Explain **why** the change was made, not what
+- Use sparingly - only when the subject isn't self-explanatory
+
+Example:
+
+```
+plugin: restore react & react-dom dedupe
+
+While the tests pass after aligning react versions between docs/ and
+plugin/, the build still breaks at runtime without this.
+```
+
+DO NOT add Claude as a coauthor to the commit.
+
+## Process
+
+1. Run `git status` to see staged and unstaged changes
+2. Run `git diff --staged` to review what will be committed
+3. Stage files with `git add <files>` (prefer specific files over `git add -A`)
+4. Determine the appropriate scope based on changed files
+5. Write a clear, concise subject line
+6. Add a body only if the "why" isn't obvious
+7. Create the commit