fix(mcp): enrich host log evidence params

apps/api/tests/test_pre_decision_investigator.py

@@ -166,6 +166,9 @@ def test_build_tool_params_uses_host_alias_and_service_from_affected_service() -
     assert params["host"] == "192.168.0.188"
     assert params["target"] == "ollama"
     assert params["service_name"] == "ollama"
+    assert params["container_name"] == "ollama"
+    assert params["filter_name"] == "ollama"
+    assert params["severity"] == "ERROR,FATAL,CRITICAL"
     assert params["search_text"] == "HostErrorLogFlood"
     assert params["time_window_minutes"] == 30
 

apps/api/tests/test_signoz_client_logs.py

@@ -0,0 +1,61 @@
+from __future__ import annotations
+
+import pytest
+
+from src.services.signoz_client import SignOzClient
+
+
+@pytest.mark.asyncio
+async def test_get_logs_uses_live_signoz_v2_table(monkeypatch) -> None:
+    client = SignOzClient()
+    queries: list[str] = []
+
+    async def fake_query(query: str) -> list[dict]:
+        queries.append(query)
+        return [
+            {
+                "timestamp": 1,
+                "severity_text": "ERROR",
+                "body": "boom",
+                "resources": {"service.name": "ollama"},
+                "attributes": {"container.name": "ollama"},
+                "trace_id": "trace-1",
+                "span_id": "span-1",
+            }
+        ]
+
+    monkeypatch.setattr(client, "_query_clickhouse", fake_query)
+
+    logs = await client.get_logs(
+        service_name="ollama",
+        severity="ERROR",
+        search_text="HostErrorLogFlood",
+        time_window_minutes=5,
+        limit=3,
+    )
+
+    assert logs[0]["service"] == "ollama"
+    assert "FROM signoz_logs.distributed_logs_v2" in queries[0]
+    assert "resources_string['service.name'] = 'ollama'" in queries[0]
+    assert "attributes_string AS attributes" in queries[0]
+
+
+@pytest.mark.asyncio
+async def test_error_logs_summary_uses_live_signoz_v2_table(monkeypatch) -> None:
+    client = SignOzClient()
+    queries: list[str] = []
+
+    async def fake_query(query: str) -> list[dict]:
+        queries.append(query)
+        return [{"severity_text": "ERROR", "count": 2, "sample_message": "boom"}]
+
+    monkeypatch.setattr(client, "_query_clickhouse", fake_query)
+
+    summary = await client.get_error_logs_summary(
+        service_name="ollama",
+        time_window_minutes=5,
+    )
+
+    assert summary["total_errors"] == 2
+    assert "FROM signoz_logs.distributed_logs_v2" in queries[0]
+    assert "resources_string['service.name'] = 'ollama'" in queries[0]