WIP-CHECKPOINT[auth-refactor]: 固化工程师崩溃前部分成果 + 同树其他未提交WIP（仅源码，不含密钥/二进制）-- 待重激活工程师续作

backend/app/services/automation/intent_router.py

@@ -0,0 +1,48 @@
+# =============================================================================
+# 企微IT智能服务台 — 阶段5 自动化 意图识别
+# =============================================================================
+# 说明：调用 Dify 识别员工诉求命中哪个自动化场景；Dify 未配置时走关键词兜底，
+#       保证 P0 四个场景在无真实 Dify 环境下也能跑通闭环。
+# =============================================================================
+
+from __future__ import annotations
+
+import logging
+from typing import Any, Dict, Optional
+
+from app.integrations.dify import DifyClient, get_dify_client
+from app.integrations.factory import build_dify_client
+
+logger = logging.getLogger(__name__)
+
+
+class IntentRouter:
+    """意图识别路由器。"""
+
+    def __init__(self, db: Any = None, audit: Any = None):
+        self.db = db
+        self.audit = audit
+
+    async def detect(self, description: str, employee_id: str = "") -> Dict[str, Any]:
+        """识别意图，返回 {scenario_key, confidence, raw, error}。
+
+        优先走 Dify；若 Dify 未配置或调用失败，使用关键词兜底。
+        """
+        client: Optional[DifyClient] = None
+        try:
+            client = await build_dify_client(audit=self.audit)
+        except Exception as e:  # noqa: BLE001
+            logger.warning(f"构建 Dify 客户端失败，转关键词兜底: {e}")
+
+        if client is None:
+            fb = DifyClient._fallback_intent(description)
+            fb["error"] = "dify_not_configured"
+            return fb
+
+        try:
+            return await client.detect_intent(description, employee_id)
+        except Exception as e:  # noqa: BLE001
+            logger.warning(f"Dify 意图识别异常，转关键词兜底: {e}")
+            fb = DifyClient._fallback_intent(description)
+            fb["error"] = str(e)
+            return fb