feat: 添加线索引擎、NLQ、场景检测、前端界面等核心功能模块

backend/app/ingest/registry.py

@@ -0,0 +1,22 @@
+"""适配器注册表：按 staging 表名索引，便于调度器统一调用。"""
+
+from __future__ import annotations
+
+from typing import Type
+
+from app.ingest.base import BaseAdapter
+
+# 全局注册表：staging_table -> Adapter 类
+ADAPTER_REGISTRY: dict[str, Type[BaseAdapter]] = {}
+
+
+def register_adapter(cls: Type[BaseAdapter]) -> Type[BaseAdapter]:
+    """类装饰器：将 Adapter 注册到全局表。"""
+    if cls.staging_table:
+        ADAPTER_REGISTRY[cls.staging_table] = cls
+    return cls
+
+
+def get_adapter(staging_table: str) -> Type[BaseAdapter] | None:
+    """按 staging 表名查找已注册的适配器类。"""
+    return ADAPTER_REGISTRY.get(staging_table)