fix(cowork-service): preserve budget policy auth errors

services/cowork-service/src/modules/usage/routes.test.ts

@@ -133,6 +133,22 @@ describe('usage proxy routes', () => {
         'Bearer test-token'
       );
     });
+
+    it('forwards budget-policy authorization failures', async () => {
+      mockFetch.mockResolvedValue({
+        ok: false,
+        status: 403,
+        json: async () => ({ error: 'Admin access required' }),
+      });
+
+      const res = await app.inject({
+        method: 'GET',
+        url: '/api/usage/budget-policy',
+      });
+
+      expect(res.statusCode).toBe(403);
+      expect(JSON.parse(res.payload).error).toBe('Admin access required');
+    });
   });
 
   describe('PUT /api/usage/budget-policy', () => {

services/cowork-service/src/modules/usage/routes.ts

@@ -54,7 +54,10 @@ async function listBudgetPolicies(
     headers: buildProxyHeaders(req),
   });
   if (!res.ok) {
-    throw new Error(`Platform returned ${res.status}`);
+    const body = (await res.json().catch(() => null)) as { error?: string } | null;
+    const error = new Error(body?.error ?? `Platform returned ${res.status}`);
+    (error as Error & { statusCode?: number }).statusCode = res.status;
+    throw error;
   }
   return (await res.json()) as PlatformBudgetPolicy[];
 }
@@ -89,7 +92,10 @@ async function upsertPolicy(
     body: JSON.stringify(body),
   });
   if (!res.ok) {
-    throw new Error(`Platform returned ${res.status}`);
+    const body = (await res.json().catch(() => null)) as { error?: string } | null;
+    const error = new Error(body?.error ?? `Platform returned ${res.status}`);
+    (error as Error & { statusCode?: number }).statusCode = res.status;
+    throw error;
   }
   return (await res.json()) as PlatformBudgetPolicy;
 }
@@ -170,8 +176,14 @@ export async function usageRoutes(app: FastifyInstance) {
       };
     } catch (err) {
       req.log.warn({ err }, 'Failed to load budget policy from platform-service');
-      reply.code(502);
-      return { error: 'Platform-service unavailable' };
+      const statusCode =
+        err instanceof Error && 'statusCode' in err && typeof err.statusCode === 'number'
+          ? err.statusCode
+          : 502;
+      reply.code(statusCode);
+      return {
+        error: err instanceof Error ? err.message : 'Platform-service unavailable',
+      };
     }
   });
 
@@ -207,8 +219,14 @@ export async function usageRoutes(app: FastifyInstance) {
       };
     } catch (err) {
       req.log.warn({ err }, 'Failed to save budget policy to platform-service');
-      reply.code(502);
-      return { error: 'Platform-service unavailable' };
+      const statusCode =
+        err instanceof Error && 'statusCode' in err && typeof err.statusCode === 'number'
+          ? err.statusCode
+          : 502;
+      reply.code(statusCode);
+      return {
+        error: err instanceof Error ? err.message : 'Platform-service unavailable',
+      };
     }
   });
 }