feat: v0.1.1 迭代——人设外键重构、Chat UI优化、意识节点防幻觉、日志双视图

1. 人设外键重构：persona_template 成为 system_prompt 唯一权威来源，
   agent/系统节点通过 persona_id FK 引用，含数据迁移脚本
2. Chat UI：去掉底部AI提示、加号改为弹出菜单、新建对话乐观跳转
3. 意识节点：无可用worker时禁止编造agent_id，只能自行完成或拒绝
4. 日志页面：双tab布局（系统日志 + 工作流日志列表选择）
5. 其他：SSE流式聊天、对话删除/重命名、standalone模式修复

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

kilostar/api/system.py

@@ -35,6 +35,7 @@ from kilostar.utils.config_loader import (
 )
 
 system_router = APIRouter(tags=["system"])
+system_api_router = APIRouter(prefix="/api/v1/system", tags=["system"])
 
 
 @system_router.get("/health/live", include_in_schema=True)
@@ -69,15 +70,15 @@ async def readiness():
     )
 
 
-@system_router.get("/config/workflow")
+@system_api_router.get("/config/workflow")
 async def get_workflow_config_endpoint(
     _: TokenData = Depends(Accessor.get_current_user),
 ):
     config = get_workflow_config()
-    return {"config": config.model_dump()}
+    return config.model_dump()
 
 
-@system_router.put("/config/workflow")
+@system_api_router.put("/config/workflow")
 async def update_workflow_config_endpoint(
     update: WorkflowConfig,
     _: TokenData = Depends(RoleChecker(allowed_roles=UserAuthority.USER)),
@@ -86,7 +87,7 @@ async def update_workflow_config_endpoint(
     return {"status": "ok", "config": update.model_dump()}
 
 
-@system_router.get("/logs")
+@system_api_router.get("/logs")
 async def query_system_logs(
     trace_id: str | None = None,
     event_type: str | None = None,
@@ -95,9 +96,7 @@ async def query_system_logs(
     offset: int = 0,
     _: TokenData = Depends(Accessor.get_current_user),
 ):
-    from kilostar.utils.ray_hook import ray_actor_hook
-
-    pg = await ray_actor_hook.get_actor("postgres_database")
+    pg = ray_actor_hook("postgres_database").postgres_database
     logs = await pg.query_event_logs.remote(
         trace_id=trace_id,
         event_type=event_type,
@@ -108,7 +107,7 @@ async def query_system_logs(
     return {"logs": logs, "count": len(logs)}
 
 
-@system_router.get("/api/v1/system/node-labels")
+@system_api_router.get("/node-labels")
 async def get_node_labels(
     _: TokenData = Depends(Accessor.get_current_user),
 ):