fix(metrics): 輸出 AI 自動化 baseline 指標

tests/test_ai_automation_metrics.py

@@ -63,6 +63,40 @@ def test_system_metrics_exports_ai_automation_metrics():
     assert "momo_ai_event_router_latency_ms_count" in output
 
 
+def test_system_metrics_exports_ai_automation_zero_baseline():
+    from prometheus_client import CollectorRegistry, Gauge, generate_latest
+    from routes.system_public_routes import _register_ai_automation_metrics
+    from services import ai_automation_metrics as metrics
+
+    metrics.reset_for_tests()
+    registry = CollectorRegistry()
+
+    _register_ai_automation_metrics(registry, Gauge, metrics.snapshot())
+
+    output = generate_latest(registry).decode("utf-8")
+    assert (
+        'momo_ai_event_router_dispatch_total{event_type="baseline",outcome="none",tier="baseline"} 0.0'
+        in output
+    )
+    assert (
+        'momo_ai_event_router_safe_action_total{action="baseline",status="none"} 0.0'
+        in output
+    )
+    assert 'momo_ai_event_router_replay_total{status="none"} 0.0' in output
+    assert (
+        'momo_ai_autoheal_action_total{action="baseline",error_type="none",result="none"} 0.0'
+        in output
+    )
+    assert (
+        'momo_ai_event_router_latency_ms_count{event_type="baseline",tier="baseline"} 0.0'
+        in output
+    )
+    assert (
+        'momo_ai_autoheal_duration_ms_count{action="baseline",error_type="none"} 0.0'
+        in output
+    )
+
+
 def test_system_metrics_counts_sales_records_with_raw_count_query():
     from prometheus_client import CollectorRegistry, Gauge, generate_latest
     from routes.system_public_routes import _set_database_record_counts