docs: update ROADMAP with FOV, A* pathfinding, and GUI text widget completions

- Mark TCOD Integration Sprint as complete
- Document FOV system with perspective rendering implementation
- Update UIEntity pathfinding status to complete with A* and caching
- Add comprehensive achievement entry for July 10 work
- Reflect current engine capabilities accurately

The engine now has all core roguelike mechanics:
- Field of View with per-entity visibility
- Pathfinding (both Dijkstra and A*)
- Text input for in-game consoles
- Performance optimizations throughout

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

ROADMAP.md

@@ -22,19 +22,19 @@
   - Mass entity choreography (100+ entities)
   - Performance stress test with 1000+ entities
 
-#### 2. TCOD Integration Sprint
+#### 2. TCOD Integration Sprint ✅ COMPLETE!
 - [x] **UIGrid TCOD Integration** (8 hours) ✅ COMPLETED!
   - ✅ Add TCODMap* to UIGrid constructor with proper lifecycle
   - ✅ Implement complete Dijkstra pathfinding system
   - ✅ Create mcrfpy.libtcod submodule with Python bindings
   - ✅ Fix critical PyArg bug preventing Color object assignments
-  - [ ] Implement mcrfpy.libtcod.compute_fov() (still needed for tutorial)
+  - ✅ Implement FOV with perspective rendering
-  - [ ] Add batch operations for NumPy-style access
+  - [ ] Add batch operations for NumPy-style access (deferred)
-  - [ ] Create CellView for ergonomic .at((x,y)) access
+  - [ ] Create CellView for ergonomic .at((x,y)) access (deferred)
-- [~] **UIEntity Pathfinding** (4 hours) - 50% COMPLETE
+- [x] **UIEntity Pathfinding** (4 hours) ✅ COMPLETED!
   - ✅ Implement Dijkstra maps for multiple targets in UIGrid
-  - [ ] Add path_to(target) method using A* to UIEntity
+  - ✅ Add path_to(target) method using A* to UIEntity
-  - [ ] Cache paths in UIEntity for performance
+  - ✅ Cache paths in UIEntity for performance
 
 #### 3. Performance Critical Path
 - [ ] **Implement SpatialHash** for 10,000+ entities (2 hours)
@@ -124,6 +124,28 @@ entity.can_see(other_entity)  # FOV check
 
 ## Recent Achievements
 
+### 2025-07-10: Complete FOV, A* Pathfinding & GUI Text Widgets! 👁️🗺️⌨️
+**Engine Feature Sprint - Major Capabilities Added**
+- ✅ Complete FOV (Field of View) system with perspective rendering
+  - UIGrid.perspective property controls which entity's view to render
+  - Three-layer overlay system: unexplored (black), explored (dark), visible (normal)
+  - Per-entity visibility state tracking with UIGridPointState
+  - Perfect knowledge updates - only explored areas persist
+- ✅ A* Pathfinding implementation
+  - Entity.path_to(x, y) method for direct pathfinding
+  - UIGrid compute_astar() and get_astar_path() methods
+  - Path caching in entities for performance
+  - Complete test suite comparing A* vs Dijkstra performance
+- ✅ GUI Text Input Widget System
+  - Full-featured TextInputWidget class with cursor, selection, scrolling
+  - Improved widget with proper text rendering and multi-line support
+  - Example showcase demonstrating multiple input fields
+  - Foundation for in-game consoles, chat systems, and text entry
+- ✅ Sizzle Reel Demos
+  - path_vision_sizzle_reel.py combines pathfinding with FOV
+  - Interactive visibility demos showing real-time FOV updates
+  - Performance demonstrations with multiple entities
+
 ### 2025-07-09: Dijkstra Pathfinding & Critical Bug Fix! 🗺️
 **TCOD Integration Sprint - Major Progress**
 - ✅ Complete Dijkstra pathfinding implementation in UIGrid