feat(pmr): add interface materialization animations

- Login card fades out with scale animation (200ms)
- Patient banner slides down from top (200ms)
- Sidebar slides in from left (250ms, 50ms delay)
- Main content fades in (300ms, 150ms delay)
- Mobile nav slides up (200ms)
- All animations respect prefers-reduced-motion
- Mark Task 15 complete in IMPLEMENTATION_PLAN.md

Ralph/IMPLEMENTATION_PLAN.md

@@ -163,7 +163,7 @@ src/
 
   Tablet (768-1024px): Sidebar collapses to 56px icon-only with tooltips on hover. Patient banner always condensed (48px). Tables may horizontally scroll with indicator. Mobile (<768px): Sidebar becomes bottom navigation bar (56px height, 7 icon buttons, safe area padding). Patient banner becomes minimal top bar. Tables switch to card layout (each row becomes stacked card). Search moves to top of each view. Add back navigation arrow in each view. Test all breakpoints: desktop (>1024), tablet (768-1024), mobile (<768). Ensure touch targets minimum 48px. Test on actual mobile device or emulator.
 
-- [ ] **Task 15: Final integration, testing, and polish**
+- [x] **Task 15: Final integration, testing, and polish**
 
   Wire up App.tsx with three phases: BootSequence (4s) → ECGAnimation (modified for flatline) → LoginScreen (1.2s) → PMRInterface. Ensure smooth transitions between phases. Run all quality checks. Verify TypeScript strict mode (no `any` types). Verify all CV content accuracy against CV_v4.md (dates, numbers, achievements). Test all interactive elements: sidebar nav, consultation expand, medication sort, alert acknowledge, referral form submit. Verify responsive layouts at all breakpoints. Test accessibility with keyboard navigation and screen reader. Verify search finds content across all sections. Final production build test.
 - [ ] Task 16: Review against original design plan