Fix React error #130 - Resolve component import issues

- Fixed wildcard exports in common/index.ts with explicit named exports
- Fixed GalleryView import path in GalleryPage.tsx
- Fixed ToastContainer props formatting in App.tsx
- Ensured all components are properly exported and imported

This should finally resolve the invalid element type error.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

frontend/src/App.tsx

@@ -94,16 +94,16 @@ function App() {
 
           {/* Toast notifications */}
           <ToastContainer
-          position="bottom-right"
-          autoClose={5000}
-          hideProgressBar={false}
-          newestOnTop
-          closeOnClick
-          rtl={false}
-          pauseOnFocusLoss
-          draggable
-          pauseOnHover
-          theme="light"
+            position="bottom-right"
+            autoClose={5000}
+            hideProgressBar={false}
+            newestOnTop
+            closeOnClick
+            rtl={false}
+            pauseOnFocusLoss
+            draggable
+            pauseOnHover
+            theme="light"
           />
         </ThemeProvider>
       </QueryClientProvider>