The duplicate functions at lines 455-486 were redefining cacheElements and
bindEvents with wrong element IDs (kebab-case vs camelCase in HTML).
This caused 'Cannot read properties of null' error on slides app init.
- Complete home page redesign with large icons, full descriptions, recent documents
- Add People (Contacts) menu item and page with contacts management
- Move Paper right after Chat in menu order
- Rename Tools to Compliance with shield icon
- Settings moved to end of menu
- Logo click now shows home page
- Add Project, Canvas, Goals, Player, Workspace, Video, Learn to menu
- New CSS for home page with modern card layout
