fix(ci): report provider degradation as warning

apps/api/tests/test_alert_chain_smoke_metric.py

@@ -17,6 +17,64 @@ SPEC.loader.exec_module(alert_chain_smoke_test)
 
 
 class AlertChainSmokeMetricTest(unittest.TestCase):
+    def test_api_health_passes_when_only_provider_is_degraded(self):
+        def fake_get(url, *, params=None, timeout=None):
+            self.assertTrue(url.endswith("/api/v1/health"))
+            return alert_chain_smoke_test.HttpGetResult(
+                200,
+                json.dumps(
+                    {
+                        "status": "degraded",
+                        "environment": "prod",
+                        "components": {
+                            "api": {"status": "up"},
+                            "postgresql": {"status": "up"},
+                            "redis": {"status": "up"},
+                            "ollama": {"status": "down", "error": "timeout"},
+                            "signoz": {"status": "up"},
+                        },
+                    }
+                ),
+            )
+
+        original_get = alert_chain_smoke_test.http_get
+        try:
+            alert_chain_smoke_test.http_get = fake_get
+            result = alert_chain_smoke_test.check_api_health("http://api")
+        finally:
+            alert_chain_smoke_test.http_get = original_get
+
+        self.assertTrue(result.passed)
+        self.assertIn("非阻塞降級: ollama", result.message)
+
+    def test_api_health_fails_when_core_component_is_down(self):
+        def fake_get(url, *, params=None, timeout=None):
+            self.assertTrue(url.endswith("/api/v1/health"))
+            return alert_chain_smoke_test.HttpGetResult(
+                200,
+                json.dumps(
+                    {
+                        "status": "degraded",
+                        "components": {
+                            "api": {"status": "up"},
+                            "postgresql": {"status": "down"},
+                            "redis": {"status": "up"},
+                            "ollama": {"status": "up"},
+                        },
+                    }
+                ),
+            )
+
+        original_get = alert_chain_smoke_test.http_get
+        try:
+            alert_chain_smoke_test.http_get = fake_get
+            result = alert_chain_smoke_test.check_api_health("http://api")
+        finally:
+            alert_chain_smoke_test.http_get = original_get
+
+        self.assertFalse(result.passed)
+        self.assertIn("核心組件異常: postgresql", result.message)
+
     def test_parse_app_alert_chain_metric_samples(self):
         samples = alert_chain_smoke_test.parse_app_alert_chain_metric_samples(
             "\n".join([