Replace Sheet overlays with inline detail panels across all pages
- Calendar: move view selector left, inline EventDetailPanel with view/edit/create
modes, fix resize on panel close, remove all Sheet/Dialog usage
- Todos: add TodoDetailPanel with inline view/edit/create, replace CategoryFilterBar
with shared component (drag-and-drop categories), 55/45 split layout
- Reminders: add ReminderDetailPanel with inline view/edit/create, 55/45 split layout
- Dashboard: all widget items now deep-link to destination page AND open the
relevant item's detail panel (events, todos, reminders)
- Fix TS errors: unused imports, undefined→null coalescing
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Kyle Pope
8945295e2a