chore: release v0.5.0

[choplin]

Release v0.5.0

Changelog

Added

• Filename-based thread status management system (feat: implement filename-based thread status management #14)
  • Comment files now use status prefixes: action-required_*.md, waiting-review_*.md, resolved_*.md
  • Status automatically updates when replying to threads
  • Status-specific colors and icons in UI
• Optional status management configuration (feat: make filename-based status management optional #16)
  • New comment.status_management configuration option (default: false)
  • Status management only works when both storage.backend = "file" and status_management = true
  • Warning messages when trying to resolve/reopen threads with status management disabled

Release checklist

• Update CHANGELOG.md with release date
• Create and push tag v0.5.0
• Merge this PR
• GitHub Actions will automatically create the release