Fix frontend error handling and code quality (GRO-642)

HIGH Priority:
1. SetupWizard.jsx -> SetupWizard.tsx: renamed to .tsx with proper TypeScript types
2. deleteAppt missing error handling: added try/catch, response.ok check, alert on failure
3. GlobalSearch missing error state: added error state with user-visible error message

MEDIUM Priority:
4. CustomerPortal unsafe type cast: fixed 'as any' to proper PortalAppointment type
5. Logo upload XSS risk: sanitized MIME types to png/jpeg/gif/webp only, removed SVG
6. Reports error handling: added ok checks before json() parsing to guard against invalid JSON on error responses

LOW Priority:
8. Modal accessibility: added role='dialog', aria-modal='true', focus trap, Escape key handler, restore focus on close
9. PetPhotoUpload file size: added 50MB max file size check before resize
10. Types package: added photoKey and photoUploadedAt to Pet interface

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/web/src/portal/CustomerPortal.tsx

@@ -16,6 +16,7 @@ import { AuditLogViewer } from "./AuditLogViewer.js";
 import { useBranding } from "../BrandingContext.js";
 import { getDevUser } from "../pages/DevLoginSelector.js";
 import type { ImpersonationSession } from "@groombook/types";
+import type { Appointment as PortalAppointment } from "./sections/Appointments.js";
 
 type Section = "dashboard" | "appointments" | "pets" | "reports" | "billing" | "messages" | "settings";
 
@@ -34,7 +35,7 @@ export function CustomerPortal() {
   const [mobileNavOpen, setMobileNavOpen] = useState(false);
   const [showAuditLog, setShowAuditLog] = useState(false);
   const [showReschedule, setShowReschedule] = useState(false);
-  const [rescheduleAppointment, setRescheduleAppointment] = useState<Record<string, unknown> | null>(null);
+  const [rescheduleAppointment, setRescheduleAppointment] = useState<PortalAppointment | null>(null);
   const [session, setSession] = useState<ImpersonationSession | null>(null);
   const [sessionExtended, setSessionExtended] = useState(false);
   const [clientName, setClientName] = useState<string>("");
@@ -149,7 +150,7 @@ export function CustomerPortal() {
   const handleReschedule = useCallback((appointmentId: string) => {
     // Look up the full appointment from Dashboard's displayed data
     // The appointment was already fetched by Dashboard, so we use the ID to find it
-    setRescheduleAppointment({ id: appointmentId } as Record<string, unknown>);
+    setRescheduleAppointment({ id: appointmentId } as PortalAppointment);
     setShowReschedule(true);
   }, []);
 
@@ -227,7 +228,7 @@ export function CustomerPortal() {
 
       {showReschedule && rescheduleAppointment && (
         <RescheduleFlow
-          appointment={rescheduleAppointment as any}
+          appointment={rescheduleAppointment}
           onClose={() => { setShowReschedule(false); setRescheduleAppointment(null); }}
           sessionId={session?.id ?? null}
         />

apps/web/src/portal/sections/Appointments.tsx

@@ -1,7 +1,7 @@
 import React, { useState, useEffect } from 'react';
 import { Calendar, Clock, Plus, ChevronRight, ChevronDown, Loader2 } from 'lucide-react';
 
-interface Appointment {
+export interface Appointment {
   id: string;
   petId: string;
   serviceId: string;