feat: .tsb backup import/restore functionality

server/api.py

@@ -369,6 +369,37 @@ async def api_export_backup():
                     headers={"Content-Disposition": "attachment; filename=turbosu_backup.tsb"})
 
 
+@router.post("/backup/import")
+async def api_import_backup(file: UploadFile = File(...)):
+    if not file.filename or not file.filename.endswith('.tsb'):
+        raise HTTPException(400, "Only .tsb files are accepted")
+
+    import io, zipfile, shutil
+    zip_data = await file.read()
+    base = Path(__file__).resolve().parent.parent
+
+    try:
+        with zipfile.ZipFile(io.BytesIO(zip_data), 'r') as zf:
+            for name in zf.namelist():
+                if name.endswith('/') or '__pycache__' in name:
+                    continue
+                dest = base / name
+                dest.parent.mkdir(parents=True, exist_ok=True)
+                dest.write_bytes(zf.read(name))
+
+        from config.settings import reload_config
+        reload_config()
+        from models.dashboard import dashboard_manager
+        import importlib
+        importlib.reload(__import__('models.dashboard', fromlist=['dashboard_manager']))
+        from server.game_manager import game_plugin_manager
+        game_plugin_manager.reload()
+
+        return {"ok": True, "message": "备份已恢复，请重启服务"}
+    except Exception as e:
+        return {"ok": False, "message": str(e)}
+
+
 # ---- Data Forwarding ----
 @router.get("/forward")
 async def api_list_forward_targets():