feat: add image upstream deadline

apps/api/tests.py

@@ -1514,6 +1514,37 @@ class GenerateApiTests(TestCase):
             1,
         )
 
+    def test_image_upstream_timeout_refunds_precharged_points_and_marks_call_failed(self):
+        self.provider.image_error = requests.Timeout("image upstream deadline exceeded")
+
+        response = self.post_with_provider(
+            "/api/v1/generate/image",
+            {"prompt": "生成图片", "model": self.image_alias, "resolution": "1K"},
+        )
+
+        self.assertEqual(response.status_code, 502)
+        self.assertEqual(response.data["error"]["code"], "upstream_timeout")
+        self.wallet.refresh_from_db()
+        self.assertEqual(self.wallet.points_balance, 100)
+
+        call = CallRecord.objects.get(user=self.user)
+        self.assertEqual(call.status, CallRecord.Status.FAILED)
+        self.assertIn("image upstream deadline exceeded", call.error_message)
+        self.assertEqual(
+            PointsLedger.objects.filter(
+                ref_call=call,
+                change_type=PointsLedger.ChangeType.CONSUME,
+            ).count(),
+            1,
+        )
+        self.assertEqual(
+            PointsLedger.objects.filter(
+                ref_call=call,
+                change_type=PointsLedger.ChangeType.REFUND,
+            ).count(),
+            1,
+        )
+
     def test_provider_capability_error_returns_400_and_refunds_points(self):
         self.provider.image_error = AiCapabilityError("input image is required")