refactor: 客户端目录统一添加 kenaito-conf- 前缀

- go-client → kenaito-conf-go-client
- python-client → kenaito-conf-python-client
- python-client-demo → kenaito-conf-python-client-demo
- nodejs-client → kenaito-conf-nodejs-client
- nodejs-client-demo → kenaito-conf-nodejs-client-demo
- 更新所有 README 和 package.json 中的路径引用

kenaito-conf-python-client/kenaito_conf/cache.py

@@ -0,0 +1,22 @@
+import json
+import os
+
+CACHE_FILE = "config-cache.json"
+
+
+class Cache:
+    def __init__(self, cache_dir: str = "."):
+        self.cache_dir = cache_dir
+
+    def write(self, data: dict) -> None:
+        path = os.path.join(self.cache_dir, CACHE_FILE)
+        with open(path, "w", encoding="utf-8") as f:
+            json.dump(data, f, ensure_ascii=False)
+
+    def read(self) -> dict | None:
+        path = os.path.join(self.cache_dir, CACHE_FILE)
+        try:
+            with open(path, "r", encoding="utf-8") as f:
+                return json.load(f)
+        except (FileNotFoundError, json.JSONDecodeError):
+            return None