feat(api): Phase 13 智能路由 + CI/CD 整合 (#74-88)

Phase 13.1 CI/CD Integration:
- #76 workflow_run handler for CI failure diagnosis
- #77 SignOz log query (query_logs, error_logs_summary MCP)
- #78 CIAutoRepairService with risk-based execution decisions

Phase 13.3 Smart Routing:
- #85 Intent Classifier v2.0 (rule engine + LLM fallback)
- #86 Complexity Scorer (9-dimension scoring)
- #87 AI Router v3.0 (routing decision matrix)
- #88 Token Counter (OTEL + Langfuse integration)

New files:
- services/ci_auto_repair.py (risk stratification)
- services/model_registry.py (centralized model config)
- services/token_counter.py (677 lines)
- Skill 08: Model Router Expert
- Skill 09: Strangler Pattern Expert
- ADR-023: Smart Routing Architecture
- ADR-024: API Layer Architecture

Tests:
- phase11-conversational.spec.ts (E2E tests)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api/src/plugins/mcp/providers/signoz_provider.py

@@ -6,10 +6,17 @@ SignOz MCP Tool Provider - ADR-015 模組化架構
 - gold_metrics: 取得 Gold Metrics (RPS, Error Rate, P99)
 - trace_url: 生成 Trace 查詢 URL
 - system_metrics: 取得系統指標 (CPU/Disk)
+- query_logs: 查詢日誌 (Phase 13.1 #77)
+- error_logs_summary: 錯誤日誌摘要 (Phase 13.1 #77)
 
 透過 DI 注入 SignOzClient，不直接 import services。
 
 @see docs/adr/ADR-015-mcp-modular-architecture.md
+
+版本: v1.1
+最後修改: 2026-03-26 16:45 (台北時區)
+修改者: Claude Code
+變更: Phase 13.1 #77 新增 query_logs, error_logs_summary
 """
 
 import uuid
@@ -84,6 +91,34 @@ class SignOzProvider(MCPToolProvider):
                 },
                 server_name=self.name,
             ),
+            MCPTool(
+                name="query_logs",
+                description="Query logs from SignOz (Phase 13.1 #77). Use for CI failure diagnosis or service debugging.",
+                input_schema={
+                    "type": "object",
+                    "properties": {
+                        "service_name": {"type": "string", "description": "Service name (e.g., awoooi-api, awoooi-worker)"},
+                        "severity": {"type": "string", "description": "Log severity filter (ERROR, WARN, INFO, DEBUG). Comma-separated for multiple."},
+                        "search_text": {"type": "string", "description": "Text to search in log messages"},
+                        "time_window_minutes": {"type": "integer", "description": "Time window in minutes (default: 30)"},
+                        "limit": {"type": "integer", "description": "Max logs to return (default: 100)"},
+                    },
+                },
+                server_name=self.name,
+            ),
+            MCPTool(
+                name="error_logs_summary",
+                description="Get error logs summary with counts and sample messages. Useful for quick diagnosis.",
+                input_schema={
+                    "type": "object",
+                    "properties": {
+                        "service_name": {"type": "string", "description": "Service name (required)"},
+                        "time_window_minutes": {"type": "integer", "description": "Time window (default: 60)"},
+                    },
+                    "required": ["service_name"],
+                },
+                server_name=self.name,
+            ),
         ]
 
     async def execute(
@@ -101,6 +136,10 @@ class SignOzProvider(MCPToolProvider):
                 output = self._trace_url(client, parameters)
             elif tool_name == "system_metrics":
                 output = await self._system_metrics(client, parameters)
+            elif tool_name == "query_logs":
+                output = await self._query_logs(client, parameters)
+            elif tool_name == "error_logs_summary":
+                output = await self._error_logs_summary(client, parameters)
             else:
                 return MCPToolResult(
                     success=False,
@@ -184,6 +223,48 @@ class SignOzProvider(MCPToolProvider):
             "time_range": metrics.get("time_range", {}),
         }
 
+    async def _query_logs(self, client, parameters: dict) -> dict:
+        """Query logs from SignOz (Phase 13.1 #77)"""
+        service_name = parameters.get("service_name")
+        severity = parameters.get("severity")
+        search_text = parameters.get("search_text")
+        time_window = parameters.get("time_window_minutes", 30)
+        limit = parameters.get("limit", 100)
+
+        logs = await client.get_logs(
+            service_name=service_name,
+            severity=severity,
+            search_text=search_text,
+            time_window_minutes=time_window,
+            limit=limit,
+        )
+
+        return {
+            "logs": logs,
+            "count": len(logs),
+            "filters": {
+                "service_name": service_name,
+                "severity": severity,
+                "search_text": search_text,
+                "time_window_minutes": time_window,
+            },
+        }
+
+    async def _error_logs_summary(self, client, parameters: dict) -> dict:
+        """Get error logs summary (Phase 13.1 #77)"""
+        service_name = parameters.get("service_name")
+        if not service_name:
+            return {"error": "Missing 'service_name' parameter"}
+
+        time_window = parameters.get("time_window_minutes", 60)
+
+        summary = await client.get_error_logs_summary(
+            service_name=service_name,
+            time_window_minutes=time_window,
+        )
+
+        return summary
+
     async def health_check(self) -> bool:
         """Check if SignOz is accessible"""
         try: