Add 11 major features for caregiver health management

Features added:
- Emergency Info Card: Full-screen emergency view with patient info
- Refill Tracker: Track pill counts with auto-decrement on dose
- Activity Feed: View caregiver activity with filtering
- Symptom Tracker: Log symptoms with severity and offline sync
- Print Views: Daily meds, appointments, doctor visit summaries
- iCal Export: Calendar subscription for appointments
- PDF Export: Medical summary for doctor visits
- Calendar View: Monthly calendar for appointments
- Appointment Preparation: Checklist for upcoming appointments
- Medication Reminders: PWA push notifications with quiet hours

Bug fixes:
- Fix invite workflow: Register/login now properly redirect back
- Add undo for doctor questions (can unmark "asked" questions)
- Fix API route type annotations for Next.js 14 compatibility
- Add Suspense boundary for useSearchParams in login/register

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/app/(app)/appointments/calendar/page.tsx

@@ -0,0 +1,115 @@
+'use client'
+
+import { useState, useEffect } from 'react'
+import { useRouter } from 'next/navigation'
+import { List, Plus } from 'lucide-react'
+import { useLiveQuery } from 'dexie-react-hooks'
+
+import { db } from '@/lib/sync'
+import { Card, LoadingState, Button } from '@/components/ui'
+import { Header, PageContainer } from '@/components/layout/header'
+import { CalendarMonth } from '@/components/calendar/CalendarMonth'
+import { useApp } from '../../provider'
+
+export default function CalendarPage() {
+  const router = useRouter()
+  const { currentWorkspace } = useApp()
+  const [currentMonth, setCurrentMonth] = useState(new Date())
+  const [selectedDate, setSelectedDate] = useState(new Date())
+  const [loading, setLoading] = useState(true)
+  const [serverAppointments, setServerAppointments] = useState<any[]>([])
+
+  // Fetch from IndexedDB for offline support
+  const localAppointments = useLiveQuery(
+    () =>
+      db.appointments
+        .where('workspaceId')
+        .equals(currentWorkspace.id)
+        .and((a) => !a.deletedAt)
+        .toArray(),
+    [currentWorkspace.id]
+  )
+
+  // Also fetch from server for latest data
+  useEffect(() => {
+    async function fetchAppointments() {
+      try {
+        const response = await fetch(
+          `/api/workspaces/${currentWorkspace.id}/appointments`
+        )
+        if (response.ok) {
+          const data = await response.json()
+          setServerAppointments(data.appointments)
+        }
+      } catch (err) {
+        console.error('Failed to fetch appointments:', err)
+      } finally {
+        setLoading(false)
+      }
+    }
+
+    fetchAppointments()
+  }, [currentWorkspace.id])
+
+  // Prefer server data if available
+  const appointments = serverAppointments.length > 0 ? serverAppointments : localAppointments || []
+
+  if (loading && !localAppointments) {
+    return (
+      <>
+        <Header
+          title="Calendar"
+          showBack
+          rightAction={{
+            icon: <List className="w-6 h-6 text-secondary-700" />,
+            label: 'List view',
+            onClick: () => router.push('/appointments'),
+          }}
+        />
+        <PageContainer>
+          <LoadingState message="Loading appointments..." />
+        </PageContainer>
+      </>
+    )
+  }
+
+  return (
+    <>
+      <Header
+        title="Calendar"
+        showBack
+        rightAction={{
+          icon: <List className="w-6 h-6 text-secondary-700" />,
+          label: 'List view',
+          onClick: () => router.push('/appointments'),
+        }}
+      />
+      <PageContainer className="pt-4 space-y-4">
+        <Card>
+          <CalendarMonth
+            appointments={appointments.map((a: any) => ({
+              id: a.id,
+              title: a.title,
+              datetime: a.datetime,
+              location: a.location,
+            }))}
+            selectedDate={selectedDate}
+            onDateSelect={setSelectedDate}
+            onMonthChange={setCurrentMonth}
+            currentMonth={currentMonth}
+          />
+        </Card>
+
+        {/* Add appointment FAB */}
+        <div className="fixed bottom-20 right-4 z-30">
+          <Button
+            onClick={() => router.push('/appointments/new')}
+            className="w-14 h-14 rounded-full shadow-lg flex items-center justify-center"
+          >
+            <Plus className="w-6 h-6" />
+          </Button>
+        </div>
+      </PageContainer>
+    </>
+  )
+}