feat: Add comprehensive accessibility improvements and medical tracking

- **EULA Persistence Fix**: Fixed EULA dialog showing on every login
  - Added eulaAcceptedAt/eulaVersion to AuthResponse interface
  - Updated login/register/getUserById endpoints to return EULA fields
  - Changed EULACheck to use refreshUser() instead of window.reload()

- **Touch Target Accessibility**: All interactive elements now meet 48x48px minimum
  - Fixed 14 undersized IconButtons across 5 files
  - Changed size="small" to size="medium" with minWidth/minHeight constraints
  - Updated children page, AI chat, analytics cards, legal viewer

- **Alt Text for Images**: Complete image accessibility for screen readers
  - Added photoAlt field to children table (Migration V009)
  - PhotoUpload component now includes alt text input field
  - All Avatar components have meaningful alt text
  - Default alt text: "Photo of {childName}", "{userName}'s profile photo"

- **Medical Tracking Consolidation**: Unified medical page with tabs
  - Medicine page now has 3 tabs: Medication, Temperature, Doctor Visit
  - Backward compatibility for legacy 'medicine' activity type
  - Created dedicated /track/growth page for physical measurements

- **Track Page Updates**:
  - Simplified to 6 options: Feeding, Sleep, Diaper, Medical, Activity, Growth
  - Fixed grid layout to 3 cards per row with minWidth: 200px
  - Updated terminology from "Medicine" to "Medical"

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

maternal-web/components/legal/EULACheck.tsx

@@ -7,7 +7,7 @@ import { useRouter } from 'next/navigation';
 import apiClient from '@/lib/api/client';
 
 export function EULACheck() {
-  const { user, logout } = useAuth();
+  const { user, logout, refreshUser } = useAuth();
   const router = useRouter();
   const [showDialog, setShowDialog] = useState(false);
   const [checking, setChecking] = useState(true);
@@ -42,8 +42,13 @@ export function EULACheck() {
 
       console.log('✅ EULA acceptance recorded:', response.data);
 
-      // Reload user data to get updated EULA acceptance
-      window.location.reload();
+      // Close dialog immediately
+      setShowDialog(false);
+
+      // Refresh user data to get updated EULA acceptance
+      await refreshUser();
+
+      console.log('✅ User data refreshed after EULA acceptance');
     } catch (error) {
       console.error('❌ Failed to accept EULA:', error);
       alert('Failed to accept EULA. Please try again.');