feat: 新增工具插件、系统日志、workflow配置及前端优化

1. 新增工具插件(edit_file, python_executor, search_file, shell_executor, write_file)
2. 新增系统事件日志模块和API
3. 新增workflow配置文件和详情API
4. 前端增加SSE、错误边界、设置引导等组件
5. 优化认证加密、速率限制、配置加载等工具模块
6. 删除废弃的cluster和health API
7. 补充单元测试和集成测试

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

kilostar/plugin/tool_plugin/write_file/__init__.py

@@ -0,0 +1,42 @@
+import os
+from typing import List, Literal, Dict
+
+from kilostar.plugin.tool_plugin.base_tool import BaseToolData
+
+
+class WriteFileToolData(BaseToolData):
+    is_system: bool = True
+    action_scope: List[
+        Literal[
+            "control_node",
+            "consciousness_node",
+            "regulatory_node",
+            "growth_node",
+            "",
+        ]
+    ] = []
+    config_args: Dict[str, str] = {}
+    category: str = "system"
+
+
+async def write_file(file_path: str, content: str) -> str:
+    """将内容写入指定文件（会覆盖已有内容，自动创建目录）。
+
+    Args:
+        file_path: 文件的路径
+        content: 要写入的内容
+
+    Returns:
+        操作结果描述
+    """
+    try:
+        dir_path = os.path.dirname(file_path)
+        if dir_path:
+            os.makedirs(dir_path, exist_ok=True)
+
+        with open(file_path, "w", encoding="utf-8") as f:
+            f.write(content)
+
+        return f"已成功写入文件: {file_path}（{len(content)} 字符）"
+    except Exception as e:
+        return f"[Error] 写入文件失败: {e}"