highlightMatch() was replacing tokens inside ANSI escape codes,
corrupting sequences like [38;2;123;127;135m when searching for '2'.
Fix: apply highlighting to plain text before theme styling.
- Add regex caching to avoid creating new RegExp objects on each render
- Optimize smartFilter to use single array with tier-based scoring
- Replace non-existent fuzzyFilter import with local fuzzyFilterLower
- Reduces from 4 array allocations and 4 sorts to 1 array and 1 sort
Fixes pre-existing bug where fuzzyFilter was imported from pi-tui but not exported.
- Extract formatRelativeTime to shared utility for reuse across components
- Optimize FilterableSelectList with pre-lowercased searchTextLower field (avoids toLowerCase on every keystroke)
- Implement custom fuzzy matching with space-separated token support and word boundary scoring
- Use matchesKey utility for consistent keybinding handling (arrows, vim j/k, ctrl+p/n)
- Fix searchable-select-list to support vim keybindings consistently
- Fix system-prompt runtimeInfo null check with nullish coalescing operator
- Add SearchableSelectList component with fuzzy filtering
- Integrate with /models command for quick model search
- Support up/down navigation while typing
- Uses pi-tui's fuzzyFilter for intelligent matching
