Refactored step 1: Core Architecture Setup

REFACTORING_TODO.md

@@ -1,27 +1,35 @@
 # Tetris Refactoring TODO List
 
-## 🚀 Phase 1: Foundation (Week 1-2) - CRITICAL
+## 🚀 Phase 1: Foundation (Week 1-2) - CRITICAL ✅ COMPLETED
 
 ### Core Architecture Setup
-- [ ] Create `ApplicationManager` class
-  - [ ] Design interface and basic structure
-  - [ ] Implement initialize(), run(), shutdown() methods
-  - [ ] Move SDL initialization from main() to ApplicationManager
-  - [ ] Add proper error handling and cleanup
-  - [ ] Test basic application lifecycle
 
-- [ ] Extract `RenderManager` class
-  - [ ] Create rendering abstraction layer
-  - [ ] Move SDL_Window and SDL_Renderer management
-  - [ ] Implement viewport and scaling logic
-  - [ ] Add texture and primitive rendering methods
-  - [ ] Test rendering pipeline isolation
+- [x] Create `ApplicationManager` class
+  - [x] Design interface and basic structure
+  - [x] Implement initialize(), run(), shutdown() methods
+  - [x] Move SDL initialization from main() to ApplicationManager
+  - [x] Add proper error handling and cleanup
+  - [x] Test basic application lifecycle
 
-- [ ] Implement basic `StateManager` improvements
-  - [ ] Enhance current StateManager with stack support
-  - [ ] Add state validation and error handling
-  - [ ] Implement proper state lifecycle management
-  - [ ] Test state transitions thoroughly
+- [x] Extract `RenderManager` class
+  - [x] Create rendering abstraction layer
+  - [x] Move SDL_Window and SDL_Renderer management
+  - [x] Implement viewport and scaling logic
+  - [x] Add texture and primitive rendering methods
+  - [x] Test rendering pipeline isolation
+
+- [x] Implement basic `StateManager` improvements
+  - [x] Enhance current StateManager with stack support
+  - [x] Add state validation and error handling
+  - [x] Implement proper state lifecycle management
+  - [x] Test state transitions thoroughly
+
+**✅ MILESTONE ACHIEVED**: Core architecture foundation is complete! We now have:
+- Clean separation between main() and application logic
+- Abstracted rendering system
+- Enhanced state management with proper lifecycle
+- Working refactored application (`tetris_refactored.exe`) alongside original
+- Proper error handling and logging throughout
 
 ### Immediate Code Cleanup
 - [ ] Remove global variables from main.cpp