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/lib/task-runtime.test.ts

@@ -1,9 +1,9 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 
-import { buildOfficeTaskList, buildOfficeView } from '@/lib/office';
+import { buildTaskRuntimeView } from '@/lib/task-runtime';
 import type { ProcessArtifact, ProcessEvent, ProcessRun, Session } from '@/types';
 
-describe('office view builders', () => {
+describe('runtime view builders', () => {
   beforeEach(() => {
     vi.useFakeTimers();
     vi.setSystemTime(new Date('2026-03-24T12:00:00.000Z'));
@@ -13,7 +13,7 @@ describe('office view builders', () => {
     vi.useRealTimers();
   });
 
-  it('builds an office view from a root run tree', () => {
+  it('builds a runtime view from a root run tree', () => {
     const sessions: Session[] = [
       {
         key: 'web:default',
@@ -118,26 +118,21 @@ describe('office view builders', () => {
       },
     ];
 
-    const office = buildOfficeView('run-root', {
+    const runtime = buildTaskRuntimeView('run-root', {
       sessions,
       processRuns,
       processEvents,
       processArtifacts,
     });
 
-    expect(office).not.toBeNull();
-    expect(office?.taskId).toBe('run-root');
-    expect(office?.title).toBe('整理竞品研究并给出结论');
-    expect(office?.sourceSessionLabel).toBe('需求讨论');
-    expect(office?.members).toHaveLength(3);
-    expect(office?.tasks).toHaveLength(3);
-    expect(office?.assignments).toHaveLength(1);
-    expect(office?.progress.label).toBe('已完成子任务 1 / 3');
-    expect(office?.currentStageLabel).toBe('分析结果');
-    expect(office?.stats.artifactCount).toBe(1);
-    expect(office?.zones.find((zone) => zone.id === 'workspace')?.memberIds).toContain('main-agent');
-    expect(office?.zones.find((zone) => zone.id === 'collab')?.memberIds).toContain('research-agent');
-    expect(office?.zones.find((zone) => zone.id === 'research')?.memberIds).toContain('search-mcp');
+    expect(runtime).not.toBeNull();
+    expect(runtime?.taskId).toBe('run-root');
+    expect(runtime?.title).toBe('整理竞品研究并给出结论');
+    expect(runtime?.sourceSessionLabel).toBe('需求讨论');
+    expect(runtime?.tasks).toHaveLength(3);
+    expect(runtime?.progress.label).toBe('已完成子任务 1 / 3');
+    expect(runtime?.stats.artifactCount).toBe(1);
+    expect(runtime?.stats.alertCount).toBe(0);
   });
 
   it('marks stale waiting tasks as blocked and emits alerts', () => {
@@ -155,109 +150,14 @@ describe('office view builders', () => {
       },
     ];
 
-    const office = buildOfficeView('run-blocked', {
+    const runtime = buildTaskRuntimeView('run-blocked', {
       sessions: [],
       processRuns,
       processEvents: [],
       processArtifacts: [],
     });
 
-    expect(office?.status).toBe('blocked');
-    expect(office?.alerts).toHaveLength(1);
-    expect(office?.alerts[0].level).toBe('warn');
-    expect(office?.members[0].zoneId).toBe('collab');
-  });
-
-  it('builds a filtered task list and sorts active tasks ahead of finished ones', () => {
-    const sessions: Session[] = [
-      { key: 'web:alpha', path: 'Alpha Session' },
-      { key: 'web:beta', path: 'Beta Session' },
-    ];
-
-    const processRuns: ProcessRun[] = [
-      {
-        run_id: 'run-active',
-        parent_run_id: null,
-        session_id: 'web:alpha',
-        actor_type: 'agent',
-        actor_id: 'agent-a',
-        actor_name: 'Agent A',
-        title: '执行活跃任务',
-        status: 'running',
-        started_at: '2026-03-24T11:20:00.000Z',
-      },
-      {
-        run_id: 'run-done',
-        parent_run_id: null,
-        session_id: 'web:alpha',
-        actor_type: 'agent',
-        actor_id: 'agent-b',
-        actor_name: 'Agent B',
-        title: '已结束任务',
-        status: 'done',
-        started_at: '2026-03-24T10:00:00.000Z',
-        finished_at: '2026-03-24T10:08:00.000Z',
-      },
-      {
-        run_id: 'run-other-session',
-        parent_run_id: null,
-        session_id: 'web:beta',
-        actor_type: 'agent',
-        actor_id: 'agent-c',
-        actor_name: 'Agent C',
-        title: '其他会话任务',
-        status: 'running',
-        started_at: '2026-03-24T11:00:00.000Z',
-      },
-    ];
-
-    const tasks = buildOfficeTaskList({
-      sessionId: 'web:alpha',
-      sessions,
-      processRuns,
-      processEvents: [],
-      processArtifacts: [],
-    });
-
-    expect(tasks).toHaveLength(2);
-    expect(tasks[0].taskId).toBe('run-active');
-    expect(tasks[1].taskId).toBe('run-done');
-    expect(tasks[0].sessionLabel).toBe('Alpha Session');
-  });
-
-  it('keeps office tasks visible when the root run inherits session from descendants', () => {
-    const tasks = buildOfficeTaskList({
-      sessionId: 'web:alpha',
-      sessions: [{ key: 'web:alpha', path: 'Alpha Session' }],
-      processRuns: [
-        {
-          run_id: 'run-root-no-session',
-          parent_run_id: null,
-          actor_type: 'agent',
-          actor_id: 'agent-a',
-          actor_name: 'Agent A',
-          title: '根任务缺少会话字段',
-          status: 'running',
-          started_at: '2026-03-24T11:20:00.000Z',
-        },
-        {
-          run_id: 'run-child-with-session',
-          parent_run_id: 'run-root-no-session',
-          session_id: 'web:alpha',
-          actor_type: 'agent',
-          actor_id: 'agent-b',
-          actor_name: 'Agent B',
-          title: '子任务仍带着会话字段',
-          status: 'running',
-          started_at: '2026-03-24T11:21:00.000Z',
-        },
-      ],
-      processEvents: [],
-      processArtifacts: [],
-    });
-
-    expect(tasks).toHaveLength(1);
-    expect(tasks[0].taskId).toBe('run-root-no-session');
-    expect(tasks[0].sessionId).toBe('web:alpha');
+    expect(runtime?.status).toBe('blocked');
+    expect(runtime?.stats.alertCount).toBe(1);
   });
 });