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/core/postgres_database/model/__init__.py

@@ -33,6 +33,7 @@ from kilostar.core.postgres_database.model.system_node import SystemNodeConfigMo
 from kilostar.core.postgres_database.model.mcp_server import MCPServerModel
 from kilostar.core.postgres_database.model.tool_config import ToolConfigModel
 from kilostar.core.postgres_database.model.custom_toolset import CustomToolsetModel
+from kilostar.core.postgres_database.model.system_event_log import SystemEventLog
 
 # 兼容旧代码的别名
 Provider = ProviderModel
@@ -61,5 +62,6 @@ __all__ = [
     "MCPServerModel",
     "ToolConfigModel",
     "CustomToolsetModel",
+    "SystemEventLog",
     "AgentType",
 ]

kilostar/core/postgres_database/model/system_event_log.py

@@ -0,0 +1,35 @@
+from sqlalchemy import String, DateTime, Integer, func, Text
+from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy.dialects.postgresql import JSONB
+from .base import BaseDataModel
+
+
+class SystemEventLog(BaseDataModel):
+    __tablename__ = "system_event_log"
+
+    id: Mapped[int] = mapped_column(
+        Integer, primary_key=True, autoincrement=True
+    )
+    trace_id: Mapped[str] = mapped_column(
+        String(64), index=True, comment="关联的工作流 trace_id"
+    )
+    event_type: Mapped[str] = mapped_column(
+        String(50), index=True,
+        comment="事件类型: workflow_start/step_enter/step_complete/step_error/workflow_complete/workflow_fail/system"
+    )
+    level: Mapped[str] = mapped_column(
+        String(10), index=True, default="info",
+        comment="日志级别: info/warn/error"
+    )
+    node_name: Mapped[str | None] = mapped_column(
+        String(100), nullable=True, comment="相关节点名称"
+    )
+    message: Mapped[str] = mapped_column(
+        Text, comment="日志消息正文"
+    )
+    extra_data: Mapped[dict | None] = mapped_column(
+        JSONB, nullable=True, comment="附加元数据（step_index/output 等）"
+    )
+    created_at: Mapped[str] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), index=True
+    )