csrf fixes (#4915)

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frontend/src/proprietary/services/apiClientSetup.ts

@@ -9,17 +9,38 @@ function getJwtTokenFromStorage(): string | null {
   }
 }
 
+function getXsrfToken(): string | null {
+  try {
+    const cookies = document.cookie.split(';');
+    for (const cookie of cookies) {
+      const [name, value] = cookie.trim().split('=');
+      if (name === 'XSRF-TOKEN') {
+        return decodeURIComponent(value);
+      }
+    }
+    return null;
+  } catch (error) {
+    console.error('[API Client] Failed to read XSRF token from cookies:', error);
+    return null;
+  }
+}
+
 export function setupApiInterceptors(client: AxiosInstance): void {
   // Install request interceptor to add JWT token
   client.interceptors.request.use(
     (config) => {
       const jwtToken = getJwtTokenFromStorage();
+      const xsrfToken = getXsrfToken();
 
       if (jwtToken && !config.headers.Authorization) {
         config.headers.Authorization = `Bearer ${jwtToken}`;
         console.debug('[API Client] Added JWT token from localStorage to Authorization header');
       }
 
+      if (xsrfToken && !config.headers['X-XSRF-TOKEN']) {
+        config.headers['X-XSRF-TOKEN'] = xsrfToken;
+      }
+
       return config;
     },
     (error) => {