changelog

Generate a changelog from git history.

Steps

1. Find the last tag

   git describe --tags --abbrev=0 2>/dev/null || echo "no-tags"
   

2. Get commits since last tag

   git log [last-tag]..HEAD --oneline --no-merges
   

   If no tags, get last 50 commits.

3. Categorize commits by prefix:

   Category	Prefixes
   Features	feat:, feature:, add:
   Bug Fixes	fix:, bugfix:, hotfix:
   Performance	perf:
   Refactoring	refactor:
   Documentation	docs:, doc:
   Testing	test:, tests:
   CI/CD	ci:, cd:, build:
   Chores	chore:, deps:, bump:
   Breaking Changes	any commit with BREAKING CHANGE in body

   If commits don't use conventional prefixes, categorize by content.

4. Generate CHANGELOG.md entry:

   ## [version] - YYYY-MM-DD
   
   ### Features
   - Description ([commit-hash])
   
   ### Bug Fixes
   - Description ([commit-hash])
   
   ### Performance
   - Description ([commit-hash])
   
   ### Breaking Changes
   - Description ([commit-hash])
   

5. If CHANGELOG.md exists, prepend the new entry at the top (after the title). If it doesn't exist, create it.

6. Show the generated changelog to the user.

<!-- Skill by Huzefa Nalkheda Wala | github.com/huzaifa525 | claude-code-optimizer -->