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/tools/__init__.py

@@ -0,0 +1,23 @@
+"""Core Tools factory — returns all 5 tools for the Agent."""
+
+from pathlib import Path
+from typing import List
+
+from langchain_core.tools import BaseTool
+
+from .terminal_tool import create_terminal_tool
+from .python_repl_tool import create_python_repl_tool
+from .fetch_url_tool import create_fetch_url_tool
+from .read_file_tool import create_read_file_tool
+from .search_knowledge_tool import create_search_knowledge_tool
+
+
+def get_all_tools(base_dir: Path) -> List[BaseTool]:
+    """Create and return all 5 core tools, sandboxed to base_dir."""
+    return [
+        create_terminal_tool(base_dir),
+        create_python_repl_tool(),
+        create_fetch_url_tool(),
+        create_read_file_tool(base_dir),
+        create_search_knowledge_tool(base_dir),
+    ]