feat(agent): 移除control_node实例化，新增系统节点命名与人设管理前端

当前阶段只保留regulatory+consciousness两个系统节点，control_node代码保留但不再实例化。
系统节点新增display_name字段支持自定义显示名称，前端新增人设管理Tab支持模板CRUD。

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

frontend/src/i18n/locales/en.json

@@ -197,7 +197,22 @@
     "system": "System",
     "type.ordinary_individual": "Ordinary",
     "type.skill_individual": "Skill",
-    "type.special_individual": "Special"
+    "type.special_individual": "Special",
+    "personaManagement": "Persona Management",
+    "personaManagementDesc": "Manage persona templates for quick worker creation",
+    "addTemplate": "Add Template",
+    "editTemplate": "Edit Template",
+    "deleteTemplateConfirm": "Delete this template?",
+    "noTemplates": "No persona templates yet",
+    "templateName": "Template Name",
+    "builtin": "Built-in",
+    "createFromTemplate": "Create worker from template",
+    "workerCreatedFromTemplate": "Worker created from template successfully",
+    "tags": "Tags",
+    "tagsPlaceholder": "Comma-separated, e.g.: assistant, translator, coder",
+    "customPrompt": "Custom Prompt",
+    "customPromptPlaceholder": "Additional content appended after the default system prompt...",
+    "displayName": "Display Name"
   },
   "plugin": {
     "toolManagement": "Tool Management",

frontend/src/i18n/locales/zh.json

@@ -197,7 +197,22 @@
     "system": "系统",
     "type.ordinary_individual": "普通",
     "type.skill_individual": "技能",
-    "type.special_individual": "特殊"
+    "type.special_individual": "特殊",
+    "personaManagement": "人设管理",
+    "personaManagementDesc": "管理人设模板，快速创建工作者",
+    "addTemplate": "添加模板",
+    "editTemplate": "编辑模板",
+    "deleteTemplateConfirm": "确定要删除此模板吗？",
+    "noTemplates": "暂无人设模板",
+    "templateName": "模板名称",
+    "builtin": "内置",
+    "createFromTemplate": "从模板创建工作者",
+    "workerCreatedFromTemplate": "已从模板成功创建工作者",
+    "tags": "标签",
+    "tagsPlaceholder": "用逗号分隔，如：助手, 翻译, 代码",
+    "customPrompt": "附加人设",
+    "customPromptPlaceholder": "在默认系统提示词之后追加的自定义内容...",
+    "displayName": "显示名称"
   },
   "plugin": {
     "toolManagement": "工具管理",