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/components/PetPhotoUpload.tsx

@@ -71,6 +71,12 @@ export function PetPhotoUpload({ petId, onUploaded }: Props) {
   }
 
   async function handleFile(file: File) {
+    const MAX_FILE_SIZE = 50 * 1024 * 1024;
+    if (file.size > MAX_FILE_SIZE) {
+      setState({ status: "error", message: "File exceeds 50MB limit. Please choose a smaller image." });
+      return;
+    }
+
     if (!ACCEPTED_TYPES.includes(file.type)) {
       setState({ status: "error", message: "Please select a JPEG, PNG, WebP, or GIF image." });
       return;