feat: 工具系统迁移 + 重型插件骨架 + 前端交互增强

- 工具系统从 kilostar/plugin/tool_plugin/ 迁移到 data/toolset/（manifest.json 声明式）
- 新增 plugin_runtime 模块：BaseOrganization / GlobalPluginManager / loader / tool_bridge
- 新增 org_task + org_task_event 表及 DAO（alembic 0009）
- 新增 /api/v1/plugin 路由（submit/status/stream/install/reload）
- 新增 data/plugin/example_dept 示例重型插件
- regulatory_node 支持聊天历史上下文注入
- send_file 改为 artifact 存盘 + SSE 推送下载链接
- 前端 WorkflowFileCard 组件 + ToolSettings README 渲染
- utils 整理：合并 access/role_check、standalone_proxy→ray_compat、删除废弃模块
- 项目结构文档移至 docs/STRUCTURE.md 并详细展开

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

main.py

@@ -41,6 +41,7 @@ from kilostar.core.global_state_machine import GlobalStateMachine
 from kilostar.core.global_workflow_manager import GlobalWorkflowManager
 from kilostar.core.individual.regulatory_node import RegulatoryNode
 from kilostar.core.individual.consciousness_node import ConsciousnessNode
+from kilostar.plugin_runtime.plugin_manager import GlobalPluginManager
 
 if KILOSTAR_MODE != "standalone":
     import ray
@@ -58,7 +59,7 @@ async def start_standalone():
     await postgres_database.init_db()
     register_standalone("postgres_database", postgres_database)
 
-    from kilostar.utils.standalone_proxy import StandaloneProxy
+    from kilostar.utils.ray_compat import StandaloneProxy
     postgres_proxy = StandaloneProxy(postgres_database)
 
     global_state_machine = GlobalStateMachine(postgres_proxy)
@@ -83,6 +84,10 @@ async def start_standalone():
     register_standalone("worker_cluster_core", worker_cluster)
     register_standalone("worker_cluster_gpu", worker_cluster)
 
+    plugin_manager = GlobalPluginManager()
+    await plugin_manager.bootstrap()
+    register_standalone("global_plugin_manager", plugin_manager)
+
     print(f"✅ KiloStar 单机模式启动完成，监听 0.0.0.0:8000")
 
     config = uvicorn.Config(app, host="0.0.0.0", port=8000, log_level="info")
@@ -162,6 +167,15 @@ async def start_distributed():
         print(f"\n[致命错误] GlobalWorkflowManager 启动失败！\n{e}\n")
         return
 
+    plugin_manager = GlobalPluginManager.options(
+        name="global_plugin_manager", namespace="kilostar", lifetime="detached"
+    ).remote()
+    try:
+        await plugin_manager.bootstrap.remote()
+        print("✅ GlobalPluginManager 初始化成功！")
+    except Exception as e:
+        print(f"⚠️ GlobalPluginManager 启动失败（非致命）: {e}")
+
     serve.start(http_options={"host": "0.0.0.0", "port": 8000})
     serve.run(KiloStarGateway.bind())