- Purged 66 obsolete GDScript UI components and mobile prototype UI from project/ui/ (retaining ui_assets.gd)
- Purged deprecated GDScript game scene, flow state machines, and local gameplay controllers (app_flow, game_scene, player_controller, net_world, etc.)
- Purged deprecated local system simulation scripts (consumable_system, chest_system, equip_rules, etc.) and project/fx/
- Purged legacy GDScript unit tests targeting obsolete classes
- Unified viewport back buffer sizing in CGraphicBase/CGraphicDevice/PythonBoot
- Cleaned up client_main.gd and python_host_check.gd for pure native port architecture
- Verified all port tests passing: port_map.py check (0 errors), port_gate.sh macos PASS (19/19 suites), python_game_render_test PASS