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/login/page.tsx

@@ -1,13 +1,15 @@
 'use client'
 
-import { useState } from 'react'
-import { useRouter } from 'next/navigation'
+import { Suspense, useState } from 'react'
+import { useRouter, useSearchParams } from 'next/navigation'
 import Link from 'next/link'
 import { Heart } from 'lucide-react'
 import { Button, Input, Card, showToast } from '@/components/ui'
 
-export default function LoginPage() {
+function LoginForm() {
   const router = useRouter()
+  const searchParams = useSearchParams()
+  const redirectTo = searchParams.get('redirect')
   const [email, setEmail] = useState('')
   const [password, setPassword] = useState('')
   const [loading, setLoading] = useState(false)
@@ -33,7 +35,8 @@ export default function LoginPage() {
       }
 
       showToast('Welcome back!', 'success')
-      router.push('/today')
+      // If there's a redirect param (e.g., from invite link), go there
+      router.push(redirectTo || '/today')
       router.refresh()
     } catch {
       setError('Something went wrong. Please try again.')
@@ -97,3 +100,15 @@ export default function LoginPage() {
     </div>
   )
 }
+
+export default function LoginPage() {
+  return (
+    <Suspense fallback={
+      <div className="min-h-screen bg-background flex items-center justify-center">
+        <div className="w-8 h-8 border-2 border-primary-500 border-t-transparent rounded-full animate-spin" />
+      </div>
+    }>
+      <LoginForm />
+    </Suspense>
+  )
+}