full upgrade

components/Toast.tsx

@@ -139,10 +139,27 @@ interface ToastContextType {
 
 const ToastContext = createContext<ToastContextType | undefined>(undefined);
 
+// No-op fallback for SSR or when outside provider
+const noopToast: ToastContextType = {
+  addToast: () => {},
+  showToast: () => {},
+  showSuccess: () => {},
+  showError: () => {},
+  showWarning: () => {},
+  showInfo: () => {},
+  showEmailSent: () => {},
+  showEmailError: () => {},
+  showProjectSaved: () => {},
+  showProjectDeleted: () => {},
+  showImportSuccess: () => {},
+  showImportError: () => {},
+};
+
 export const useToast = () => {
   const context = useContext(ToastContext);
+  // Return no-op fallback during SSR or if used outside provider
   if (!context) {
-    throw new Error('useToast must be used within a ToastProvider');
+    return noopToast;
   }
   return context;
 };