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>

frontend/package.json

@@ -12,6 +12,7 @@
   "dependencies": {
     "@fontsource/inter": "^5.2.8",
     "@fontsource/jetbrains-mono": "^5.2.8",
+    "@types/react-syntax-highlighter": "^15.5.13",
     "@xyflow/react": "^12.10.2",
     "axios": "^1.15.1",
     "i18next": "^26.3.0",
@@ -20,6 +21,9 @@
     "react": "^19.2.4",
     "react-dom": "^19.2.4",
     "react-i18next": "^17.0.8",
+    "react-markdown": "^9.0.3",
+    "react-syntax-highlighter": "^15.6.1",
+    "remark-gfm": "^4.0.0",
     "zustand": "^5.0.14"
   },
   "devDependencies": {