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/GlobalSearch.tsx

@@ -26,6 +26,7 @@ export function GlobalSearch() {
   const [query, setQuery] = useState("");
   const [results, setResults] = useState<SearchResults | null>(null);
   const [loading, setLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
   const [open, setOpen] = useState(false);
   const inputRef = useRef<HTMLInputElement>(null);
   const dropdownRef = useRef<HTMLDivElement>(null);
@@ -45,15 +46,18 @@ export function GlobalSearch() {
 
     debounceRef.current = setTimeout(async () => {
       setLoading(true);
+      setError(null);
       try {
         const res = await fetch(`/api/search?q=${encodeURIComponent(trimmed)}`);
         if (res.ok) {
           const data: SearchResults = await res.json();
           setResults(data);
           setOpen(true);
+        } else {
+          setError("Search failed. Please try again.");
         }
-      } catch (err) {
-        console.warn("GlobalSearch: fetch error", err);
+      } catch {
+        setError("Search failed. Please try again.");
       } finally {
         setLoading(false);
       }
@@ -160,7 +164,13 @@ export function GlobalSearch() {
             </div>
           )}
 
-          {!loading && !hasResults && (
+          {!loading && error && (
+            <div style={{ padding: "12px 16px", fontSize: 13, color: "#dc2626" }}>
+              {error}
+            </div>
+          )}
+
+          {!loading && !error && !hasResults && (
             <div style={{ padding: "12px 16px", fontSize: 13, color: "#6b7280" }}>
               No results found
             </div>

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;