/changelog

Generate changelog from commits since last release

## Context

- Latest tag: !`git describe --tags --abbrev=0 2>/dev/null || echo "No tags found"`
- Commits since last tag: !`git log $(git describe --tags --abbrev=0 2>/dev/null || echo "HEAD~20")..HEAD --format="%h %s" 2>/dev/null | head -15`
- Repository: !`basename $(git rev-parse --show-toplevel)`

**If `$ARGUMENTS` is empty or not provided:**

Generate a changelog from commits since the last release tag.

**Usage:** `/changelog [starting-point]`

**Examples:**

- `/changelog` - Since last tag
- `/changelog v1.2.0` - Since specific tag
- `/changelog HEAD~50` - Last 50 commits
- `/changel...