feat: add template detail and config APIs

backend/app/api/data_sources.py

@@ -0,0 +1,27 @@
+from fastapi import APIRouter, HTTPException
+
+from ..schemas.template import DataSourcePayload
+
+
+router = APIRouter(prefix="/api/data-sources", tags=["data-sources"])
+
+DATA_SOURCES: list[dict] = [
+    {"code": "policy", "name": "政策文件", "description": "政策法规、制度文件等资料"},
+    {"code": "business_data", "name": "业务数据", "description": "业务系统导出的结构化数据"},
+    {"code": "research", "name": "调研材料", "description": "访谈、问卷、调研纪要等非结构化资料"},
+]
+
+
+@router.get("")
+def list_data_sources():
+    return {"data": DATA_SOURCES, "message": "ok"}
+
+
+@router.post("")
+def create_data_source(payload: DataSourcePayload):
+    if any(item["code"] == payload.code for item in DATA_SOURCES):
+        raise HTTPException(status_code=400, detail="数据源编码已存在")
+
+    item = payload.model_dump()
+    DATA_SOURCES.append(item)
+    return {"data": item, "message": "ok"}