fix(toolset): 启动时自动补种系统工具集，工具集页面移至智能体侧边栏

- init_state_machine 启动时检查 DB 并补种 system_basic/system_chat/system_workflow
- 修复 postgres facade 缺少 is_system/category 参数的问题
- 前端工具集从"插件"独立为侧边栏"工具集"tab，位于智能体和插件之间

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

kilostar/core/global_state_machine/global_state_machine.py

@@ -67,14 +67,58 @@ class GlobalStateMachine:
         # Tool configs
         cfg_rows = await self.postgres_database.list_tool_configs_db.remote()
         self._tool_configs = {row["tool_name"]: row["config"] for row in cfg_rows}
-        # Custom toolsets
+        # Custom toolsets（含系统预置）
         ts_rows = await self.postgres_database.list_custom_toolsets.remote()
         self._custom_toolsets = {row["toolset_id"]: row for row in ts_rows}
+        # 补种系统预置工具集（首次启动或 DB 被 create_all 重建后）
+        await self._seed_system_toolsets()
         # 让 tool_manager 立刻把 custom toolset 装配成 FunctionToolset
         self._global_tool_manager.rebuild_custom_toolsets(self._custom_toolsets)
         # 启动期一次性发布 v1 快照，让等待中的读端立刻可用
         self._publish_snapshot()
 
+    _SYSTEM_TOOLSETS = [
+        {
+            "toolset_id": "system_basic",
+            "name": "系统基础工具集",
+            "description": "文件读写、搜索、代码执行等基础能力",
+            "tools": ["file_reader", "write_file", "edit_file", "search_file", "python_executor", "shell_executor"],
+            "is_system": True,
+            "category": "system_basic",
+        },
+        {
+            "toolset_id": "system_chat",
+            "name": "系统对话工具集",
+            "description": "对话场景专用工具（发送文件等）",
+            "tools": ["send_file"],
+            "is_system": True,
+            "category": "system_chat",
+        },
+        {
+            "toolset_id": "system_workflow",
+            "name": "系统工作流工具集",
+            "description": "工作流场景专用工具（审批等）",
+            "tools": ["approval"],
+            "is_system": True,
+            "category": "system_workflow",
+        },
+    ]
+
+    async def _seed_system_toolsets(self):
+        """若 DB 中缺少系统预置工具集则自动补种。"""
+        for seed in self._SYSTEM_TOOLSETS:
+            if seed["toolset_id"] not in self._custom_toolsets:
+                await self.postgres_database.upsert_custom_toolset.remote(
+                    toolset_id=seed["toolset_id"],
+                    name=seed["name"],
+                    tools=seed["tools"],
+                    description=seed["description"],
+                    owner_id=None,
+                    is_system=True,
+                    category=seed["category"],
+                )
+                self._custom_toolsets[seed["toolset_id"]] = seed
+
     # ─── Snapshot 发布（Object Store 读路径） ────────────────────
 
     def _build_snapshot(self) -> GSMSnapshot: