chore: mini-openclaw 初始版本

Next.js 前端 + FastAPI/LangChain 后端透明 agent平台
- 含 .gitignore, 敏感文件(sessions数据/.env/venv等)已排除
- 待后续添加 trajectory 自进化机制

backend/config.py

@@ -0,0 +1,42 @@
+"""Global configuration management — JSON-based persistence."""
+
+import json
+from pathlib import Path
+from typing import Any
+
+CONFIG_FILE = Path(__file__).resolve().parent / "config.json"
+
+_DEFAULT_CONFIG: dict[str, Any] = {
+    "rag_mode": False,
+}
+
+
+def load_config() -> dict[str, Any]:
+    """Load configuration from disk, returning defaults if missing."""
+    if not CONFIG_FILE.exists():
+        return dict(_DEFAULT_CONFIG)
+    try:
+        data = json.loads(CONFIG_FILE.read_text(encoding="utf-8"))
+        return {**_DEFAULT_CONFIG, **data}
+    except Exception:
+        return dict(_DEFAULT_CONFIG)
+
+
+def save_config(config: dict[str, Any]) -> None:
+    """Persist configuration to disk."""
+    CONFIG_FILE.write_text(
+        json.dumps(config, ensure_ascii=False, indent=2),
+        encoding="utf-8",
+    )
+
+
+def get_rag_mode() -> bool:
+    """Get current RAG mode setting."""
+    return bool(load_config().get("rag_mode", False))
+
+
+def set_rag_mode(enabled: bool) -> None:
+    """Set RAG mode on/off."""
+    config = load_config()
+    config["rag_mode"] = enabled
+    save_config(config)