Removed deprecated database context save functionality from /checkpoint:
- Deleted Part 2: Database Context Save section
- Removed API endpoint, JWT auth, and payload examples
- Updated description to focus on git operations only
- Simplified verification to git commit only
- Kept directives refresh requirement
Checkpoint command now handles git commits exclusively.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>