Fix uploads

frontend/src/plugins/api.js

@@ -24,9 +24,17 @@ export function useClient() {
             }
         }
 
+        // Add authorization header if authenticated
         if (authStore.isAuthenticated) {
             config.headers.Authorization = `Bearer ${authStore.accessToken}`;
         }
+        
+        // Don't override Content-Type for FormData requests
+        if (config.data instanceof FormData) {
+            // Let the browser set the correct Content-Type with boundary
+            delete config.headers['Content-Type'];
+        }
+        
         return config;
     });