refactor(beaver): 移除Hermes相关引用和迁移代码，完善Beaver后端主线实现

移除了所有Hermes相关的命名引用，包括：
- 从.gitignore中清理相关构建缓存文件
- 将README中的beaver-home路径配置更新
- 完善backend/README.md文档说明Beaver后端主线实现
- 移除Hermes风格的相关注释和兼容性代码
- 清理nanobot环境变量兼容性处理
- 删除技能迁移和服务迁移相关功能代码
- 更新测试用例中相关命名和函数名

BREAKING CHANGE: 移除了Hermes迁移相关API和CLI命令，不再支持nanobot环境变量兼容性

app-instance/frontend/app/(app)/tasks/[taskId]/page.tsx

@@ -3,21 +3,21 @@
 import Link from 'next/link';
 import { useParams, useRouter } from 'next/navigation';
 import React, { useMemo, useState } from 'react';
-import { AlertCircle, ArrowLeft, Bot, CheckCircle2, Download, FileText, HelpCircle, MessageSquare, RefreshCw, RotateCcw, Trash2, User, XCircle } from 'lucide-react';
+import { AlertCircle, ArrowLeft, Bot, CheckCircle2, Download, FileText, HelpCircle, MessageSquare, RefreshCw, Trash2, User, XCircle } from 'lucide-react';
 
-import { OfficeStatusBadge, formatOfficeDuration, formatOfficeTime, progressPercent } from '@/components/office/OfficeShared';
+import { TaskRuntimeStatusBadge, formatTaskRuntimeDuration, formatTaskRuntimeTime, progressPercent } from '@/components/task-runtime/TaskRuntimeShared';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Textarea } from '@/components/ui/textarea';
-import { cancelDelegation, deleteBackendTask, getBackendTask, getFileUrl, retryDelegation, submitChatFeedback } from '@/lib/api';
+import { deleteBackendTask, getBackendTask, getFileUrl, submitChatFeedback } from '@/lib/api';
 import { pickAppText } from '@/lib/i18n/core';
 import { useAppI18n } from '@/lib/i18n/provider';
-import { buildOfficeView, isOfficeTaskTerminal, type OfficeTaskView } from '@/lib/office';
+import { buildTaskRuntimeView, type TaskRuntimeNodeView } from '@/lib/task-runtime';
 import { useChatStore } from '@/lib/store';
 import type { BackendTask, BackendTaskRun, ProcessArtifact, ProcessEvent } from '@/types';
 
-function taskVisibleStatus(task: OfficeTaskView, locale: 'zh-CN' | 'en-US') {
+function taskVisibleStatus(task: TaskRuntimeNodeView, locale: 'zh-CN' | 'en-US') {
   if (task.status === 'error') return pickAppText(locale, '任务失败', 'Task failed');
   if (task.status === 'cancelled') return pickAppText(locale, '已取消', 'Cancelled');
   return task.stageLabel || task.status;
@@ -46,7 +46,7 @@ export default function TaskDetailPage() {
   const updateMessageFeedback = useChatStore((state) => state.updateMessageFeedback);
 
   const task = useMemo(
-    () => buildOfficeView(taskId, { sessions, processRuns, processEvents, processArtifacts }, locale),
+    () => buildTaskRuntimeView(taskId, { sessions, processRuns, processEvents, processArtifacts }, locale),
     [locale, processArtifacts, processEvents, processRuns, sessions, taskId]
   );
   const [backendTask, setBackendTask] = useState<BackendTask | null>(null);
@@ -105,7 +105,7 @@ export default function TaskDetailPage() {
     return map;
   }, [artifacts]);
   const phaseGroups = useMemo(() => {
-    const groups = new Map<string, OfficeTaskView[]>();
+    const groups = new Map<string, TaskRuntimeNodeView[]>();
     for (const item of task?.tasks ?? []) {
       const label = item.stageLabel || taskVisibleStatus(item, locale);
       groups.set(label, [...(groups.get(label) ?? []), item]);
@@ -180,7 +180,7 @@ export default function TaskDetailPage() {
             <div className="mt-3 flex flex-wrap gap-x-4 gap-y-1 text-xs text-muted-foreground">
               <span>{pickAppText(locale, '来源会话', 'Session')}: {backendTask.session_id}</span>
               <span>{pickAppText(locale, '创建者', 'Creator')}: {backendTask.creator}</span>
-              <span>{pickAppText(locale, '更新', 'Updated')}: {formatOfficeTime(backendTask.updated_at, locale)}</span>
+              <span>{pickAppText(locale, '更新', 'Updated')}: {formatTaskRuntimeTime(backendTask.updated_at, locale)}</span>
             </div>
           </CardContent>
         </Card>
@@ -242,7 +242,7 @@ export default function TaskDetailPage() {
                   <div key={index} className="rounded-md border border-border p-3">
                     <div className="font-medium">{humanFeedback(String(item.feedback_type || ''), locale)}</div>
                     {item.comment ? <p className="mt-1 text-muted-foreground">{String(item.comment)}</p> : null}
-                    {item.created_at ? <p className="mt-1 text-xs text-muted-foreground">{formatOfficeTime(String(item.created_at), locale)}</p> : null}
+                    {item.created_at ? <p className="mt-1 text-xs text-muted-foreground">{formatTaskRuntimeTime(String(item.created_at), locale)}</p> : null}
                   </div>
                 ))
               )}
@@ -295,25 +295,6 @@ export default function TaskDetailPage() {
             </Link>
           </Button>
         </div>
-        <div className="flex flex-wrap items-center gap-2">
-          <Button
-            variant="outline"
-            size="sm"
-            disabled={Boolean(actionBusy) || isOfficeTaskTerminal(task.status)}
-            onClick={() => void runAction('cancel', () => cancelDelegation(task.rootRunId))}
-          >
-            <XCircle className="mr-2 h-4 w-4" />
-            {pickAppText(locale, '取消任务', 'Cancel task')}
-          </Button>
-          <Button
-            size="sm"
-            disabled={Boolean(actionBusy) || !isOfficeTaskTerminal(task.status)}
-            onClick={() => void runAction('retry', () => retryDelegation(task.rootRunId))}
-          >
-            <RotateCcw className="mr-2 h-4 w-4" />
-            {pickAppText(locale, '重试任务', 'Retry task')}
-          </Button>
-        </div>
       </div>
 
       <Card>
@@ -322,20 +303,20 @@ export default function TaskDetailPage() {
             <div className="min-w-0">
               <div className="flex flex-wrap items-center gap-3">
                 <h1 className="truncate text-2xl font-semibold">{task.title}</h1>
-                <OfficeStatusBadge status={task.status} />
+                <TaskRuntimeStatusBadge status={task.status} />
               </div>
               <div className="mt-3 flex flex-wrap gap-x-4 gap-y-1 text-xs text-muted-foreground">
                 <span>{pickAppText(locale, '来源会话', 'Session')}: {task.sourceSessionLabel}</span>
                 <span>{pickAppText(locale, '主 Agent', 'Lead agent')}: {task.rootActorName}</span>
-                <span>{pickAppText(locale, '开始', 'Started')}: {formatOfficeTime(task.createdAt, locale)}</span>
-                <span>{pickAppText(locale, '耗时', 'Duration')}: {formatOfficeDuration(task.durationMs, locale)}</span>
+                <span>{pickAppText(locale, '开始', 'Started')}: {formatTaskRuntimeTime(task.createdAt, locale)}</span>
+                <span>{pickAppText(locale, '耗时', 'Duration')}: {formatTaskRuntimeDuration(task.durationMs, locale)}</span>
               </div>
             </div>
             <div className="grid w-full gap-3 sm:grid-cols-4 lg:w-[520px]">
               <Metric label={pickAppText(locale, '节点', 'Nodes')} value={String(task.stats.totalRuns)} />
               <Metric label={pickAppText(locale, '活跃', 'Active')} value={String(task.stats.activeRuns)} />
               <Metric label={pickAppText(locale, '产物', 'Artifacts')} value={String(task.stats.artifactCount)} />
-              <Metric label={pickAppText(locale, '异常', 'Alerts')} value={String(task.alerts.length)} />
+              <Metric label={pickAppText(locale, '异常', 'Alerts')} value={String(task.stats.alertCount)} />
             </div>
           </div>
           <div className="mt-5 space-y-2">
@@ -398,7 +379,7 @@ export default function TaskDetailPage() {
                         <div className="truncate font-medium">{node.title}</div>
                         <div className="mt-1 text-xs text-muted-foreground">{node.actorName}</div>
                       </div>
-                      <OfficeStatusBadge status={node.status} />
+                      <TaskRuntimeStatusBadge status={node.status} />
                     </div>
                     <div className="mt-3 text-sm text-muted-foreground">
                       {node.summary || taskVisibleStatus(node, locale)}
@@ -426,13 +407,13 @@ export default function TaskDetailPage() {
                     <div className="font-medium">{selectedNode.title}</div>
                     <div className="mt-1 text-xs text-muted-foreground">{selectedNode.runId}</div>
                   </div>
-                  <OfficeStatusBadge status={selectedNode.status} />
+                  <TaskRuntimeStatusBadge status={selectedNode.status} />
                   <p className="text-sm text-muted-foreground">{selectedNode.summary || '-'}</p>
                   <div className="space-y-2">
                     {(eventsByRun.get(selectedNode.runId) ?? []).slice(-5).map((event) => (
                       <div key={event.event_id} className="rounded-md border border-border bg-muted/30 p-2 text-xs">
                         <div className="font-medium">{event.kind}</div>
-                        <div className="mt-1 text-muted-foreground">{event.text || formatOfficeTime(event.created_at, locale)}</div>
+                        <div className="mt-1 text-muted-foreground">{event.text || formatTaskRuntimeTime(event.created_at, locale)}</div>
                       </div>
                     ))}
                   </div>
@@ -548,7 +529,7 @@ function BackendRunConversation({ run, index }: { run: BackendTaskRun; index: nu
         <div>
           <div className="font-medium">{run.title || pickAppText(locale, `Agent ${index + 1}`, `Agent ${index + 1}`)}</div>
           <div className="mt-1 text-xs text-muted-foreground">
-            {run.started_at ? formatOfficeTime(run.started_at, locale) : pickAppText(locale, '时间未知', 'Unknown time')}
+            {run.started_at ? formatTaskRuntimeTime(run.started_at, locale) : pickAppText(locale, '时间未知', 'Unknown time')}
             {run.finish_reason ? ` · ${humanFinishReason(run.finish_reason, locale)}` : ''}
           </div>
         </div>
@@ -573,7 +554,7 @@ function BackendRunConversation({ run, index }: { run: BackendTaskRun; index: nu
                 <div className="min-w-0 flex-1">
                   <div className="mb-1 flex items-center gap-2 text-xs text-muted-foreground">
                     <span>{isAssistant ? run.title || pickAppText(locale, 'Agent 回复', 'Agent reply') : isTool ? message.tool_name || pickAppText(locale, '工具结果', 'Tool result') : pickAppText(locale, '用户要求', 'User request')}</span>
-                    {message.created_at ? <span>{formatOfficeTime(message.created_at, locale)}</span> : null}
+                    {message.created_at ? <span>{formatTaskRuntimeTime(message.created_at, locale)}</span> : null}
                   </div>
                   <div className="whitespace-pre-wrap rounded-md border border-border bg-muted/20 px-3 py-2 text-sm leading-6">
                     {message.content}