Replace all fatih/color usages with internal/ui package that provides:
- Semantic color tokens (Pass, Warn, Fail, Accent, Muted)
- Adaptive light/dark mode support via Lipgloss AdaptiveColor
- Ayu theme colors for consistent, accessible output
- Tufte-inspired data-ink ratio principles
Files migrated: 35 command files in cmd/bd/
Add docs/ui-philosophy.md documenting:
- Semantic token usage guidelines
- Light/dark terminal optimization rationale
- Tufte and perceptual UI/UX theory application
- When to use (and not use) color in CLI output
Add pin.go and unpin.go to cmd/bd/ for managing pinned issues.
- bd pin <id> sets Pinned=true on an issue
- bd unpin <id> sets Pinned=false on an issue
Also adds Pinned field support to RPC UpdateArgs for daemon mode.
🤝 Slit
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
