Kan v0.21.0

What's Changed

• 26e25f2: Fix stale board rendering on board switch by @amterp
• 56dc92a: Remove metadata display slot from user-facing docs by @amterp
• 5b9b2d4: Add slim mode for vertical column layout by @amterp
• e01a772: Make advance button available in all modes, not just slim by @amterp
• 8b85659: Use horizontal layout for card delete confirmation by @amterp
• c85a66f: Wrap up/down arrow navigation across columns in slim mode by @amterp
• 6460826: Fix stale board rendering on board switch by @amterp
• da672e8: Fix stale cards shown after project switch by @amterp
• 273bcc6: Render badge values in kan list CLI output by @amterp
• 79ab5b7: Support boolean custom fields in badges display slot by @amterp
• c7d03d0: Fix kan list to respect card_ids ordering by @amterp
• 7c3ed32: Search across boards for card ID instead of forcing board picker by @amterp
• 6ac6920: Fix explicit board flag falling through to cross-board search by @amterp
• 6c621df: Reset board switcher highlight to previous board on open by @amterp
• 80e4130: Slim down header in slim mode by @amterp
• f0e7d23: Add /theme omnibar command for switching themes by @amterp
• 22b733f: Add Cmd+Z undo for card moves, deletes, and edits by @amterp
• 093e8fb: Add redo (Cmd+Shift+Z) by @amterp
• b74c579: Add hidden agent-discovery hints for llms.txt by @amterp
• 99fec82: Move card-column association to card files by @amterp
• 75f4db7: Remove 'branching' from file-based benefits list by @amterp
• 3dfea8a: Fix Go formatting (gofmt) by @amterp
• 2f99fcf: Auto-migrate schemas transparently in NewApp() by @amterp
• 190fc3b: Add inline card title editing in slim mode by @amterp
• 4f217a1: Auto-migrate project schemas on web UI project switch by @amterp
• 4efa250: chore: update kan files by @amterp
• 5932afe: Slim mode: only edit title when clicking title text by @amterp
• 7c4fe03: Reformat code by @amterp

Full Changelog: v0.20.2...v0.21.0