feat: add template upload endpoint

backend/app/api/templates.py

@@ -0,0 +1,35 @@
+from fastapi import APIRouter, Depends, File, Form, HTTPException, UploadFile
+from sqlalchemy.orm import Session
+
+from ..database import get_db
+from ..services.template_service import create_template_record, store_template_file
+
+
+router = APIRouter(prefix="/api/templates", tags=["templates"])
+
+
+@router.post("/upload")
+def upload_template(
+    file: UploadFile = File(...),
+    name: str = Form(...),
+    type: str = Form("report"),
+    db: Session = Depends(get_db),
+):
+    """上传 Word 模板并创建模板记录。"""
+    try:
+        stored_path, _ = store_template_file(file)
+        template = create_template_record(db, name=name, file_path=stored_path, type=type)
+    except ValueError as exc:
+        raise HTTPException(status_code=400, detail=str(exc)) from exc
+    except Exception as exc:
+        db.rollback()
+        raise HTTPException(status_code=500, detail="模板上传失败") from exc
+
+    return {
+        "data": {
+            "template_id": template.id,
+            "name": template.name,
+            "status": "uploaded",
+        },
+        "message": "ok",
+    }