Valid column indices are 0 through cols - 1. The previous check used
startCol > cols, so on an 80-column terminal column 80 was accepted while
column 100 correctly threw. Use >= so the out-of-range guard matches the
documented error for invalid search positions.
Co-authored-by: Cursor <cursoragent@cursor.com>
- Remove export from IHighlight and IMultiHighlight interfaces
- Remove export from ISelectedDecoration interface
- Remove export from ISearchPosition interface
- Keep ISearchResult exported as it's used across multiple files
- Make ISelectedDecoration extend IDisposable for consistency
- Extract SearchEngine for core search algorithms
- Extract DecorationManager for visual decorations
- Extract SearchState for state management
- Extract SearchResultTracker for result tracking
- Simplify SearchAddon by delegating to components
- Improve modularity and maintainability