fix: report API errors (422, 404, 5xx, network) and React errors to Forgejo error reporter

- client.ts: logError() import added, API error interceptor now reports to /api/v1/errors
- ErrorBoundary.tsx: logError() import added, React rendering errors now reported
- 401 (auth) and 403 (permission) errors are NOT reported (expected behavior)
- 422 (validation), 404 (not found), 5xx (server), 0 (network) ARE reported

frontend/src/api/client.ts

@@ -1,4 +1,5 @@
 import axios, { AxiosError, AxiosRequestConfig, InternalAxiosRequestConfig } from 'axios';
+import { logError } from '@/utils/errorLogger';
 
 export interface ApiError {
   status: number;
@@ -114,6 +115,18 @@ apiClient.interceptors.response.use(
       validationErrors: status === 422 ? extractValidationErrors(data) : undefined,
     };
 
+    // Report API errors to backend error logger (for Forgejo issue creation)
+    // Skip 401 (auth) and 403 (permission) — these are expected, not bugs
+    // Report: 422 (validation), 404 (not found), 5xx (server), 0 (network)
+    if (status !== 401 && status !== 403) {
+      logError(apiError.message, {
+        status,
+        url: error.config?.url,
+        method: error.config?.method,
+        detail: apiError.detail,
+      });
+    }
+
     return Promise.reject(apiError);
   }
 );