Extract rendering logic from index.js into modular system:
- src/utils/avatars.js: Safe thumbnail URL generation with error handling
- src/systems/rendering/userStats.js: User stats panel with progress bars and classic RPG stats
- src/systems/rendering/infoBox.js: Info box dashboard with weather, date, time, and location widgets
- src/systems/rendering/thoughts.js: Character thoughts panel and floating chat bubbles
Reduces index.js from 3,829 to 2,430 lines (-1,399 lines, -36.5%)
All rendering functions now properly modularized with full JSDoc documentation
Event listeners preserved in render functions for interactive fields