- Add spatial search module for finding users/objects by name
- Add js/spatial-search.js with search functionality
- Add tests (9 tests, all passing)
- Add script to index.html
Features:
1. Search by name with autocomplete
2. Distance calculation
3. Direction indicator (N/S/E/W/NE/SE/SW/NW)
4. Pathfinding arrow on HUD
5. Keyboard shortcut (Ctrl+F / Cmd+F)
Addresses issue #1540: feat: spatial search — find nearest user/object by name
Usage:
- Open search: Ctrl+F or Cmd+F
- Type name to search
- Select result to see direction arrow
- Arrow points to selected entity
Tested:
- Entity registration/unregistration
- Position updates
- Distance calculation
- Direction calculation
- Search functionality
