update-deps

Review and update project dependencies safely.

Phase 1: Dependency Audit

1. List all outdated dependencies
2. Check for security vulnerabilities
3. Identify breaking changes in major updates

Phase 2: Update Strategy

4. Categorise: security patches (immediate), minor updates (safe), major updates (needs testing)
5. For major updates: read changelog, identify breaking changes, find migration guides

Phase 3: Incremental Updates

6. Update in order: security patches, dev dependencies, minor production, major (one at a time)
7. After each group: run full test suite, check deprecation warnings

Phase 4: Documentation

8. Update lock files, README if setup changed, migration notes

Create a PR for each logical group with clear description and testing performed.