feat: integrate 5 feature branches + daemon/job 命令层级化 + 跨平台后台引擎 + TypeScript 错误修复

Squashed merge of:
1. fix/mcp-tsc-errors — 修复上游 MCP 重构后的 tsc 错误和测试失败
2. feat/pipe-mute-disconnect — Pipe IPC 逻辑断开、/lang 命令、mute 状态机
3. feat/stub-recovery-all — 实现全部 stub 恢复 (task 001-012)
4. feat/kairos-activation — KAIROS 激活解除阻塞 + 工具实现
5. codex/openclaw-autonomy-pr — 自治权限系统、运行记录、managed flows

Additional:
6. daemon/job 命令层级化重构 (subcommand 架构)
7. 跨平台后台引擎抽象 (detached/tmux engines)
8. 修复 src/ 中 43 个预存在的 TypeScript 类型错误
9. 修复 langfuse isolated test mock 完整性
10. 修复 CodeRabbit 审查的 Critical/Major/Minor 问题
11. remote-control-server logger 抽象 (测试 stderr 静默化)
12. /simplify 审查修复 (代码复用、质量、效率)

src/commands/__tests__/proactive.baseline.test.ts

@@ -0,0 +1,48 @@
+import { beforeEach, describe, expect, test } from 'bun:test'
+import proactiveCommand from '../proactive'
+import {
+  activateProactive,
+  deactivateProactive,
+  isProactiveActive,
+} from '../../proactive/index'
+
+beforeEach(() => {
+  deactivateProactive()
+})
+
+describe('/proactive baseline', () => {
+  test('invoking the command enables proactive mode and emits a system reminder', async () => {
+    const mod = await proactiveCommand.load()
+    let resultText: string | undefined
+    let options: Parameters<Parameters<typeof mod.call>[0]>[1] | undefined
+
+    await mod.call((result, opts) => {
+      resultText = result
+      options = opts
+    }, {} as any)
+
+    expect(isProactiveActive()).toBe(true)
+    expect(resultText).toContain('Proactive mode enabled')
+    expect(options?.display).toBe('system')
+    expect(options?.metaMessages?.[0]).toContain(
+      'Proactive mode is now enabled',
+    )
+  })
+
+  test('invoking the command again disables proactive mode', async () => {
+    const mod = await proactiveCommand.load()
+    activateProactive('test')
+
+    let resultText: string | undefined
+    let options: Parameters<Parameters<typeof mod.call>[0]>[1] | undefined
+
+    await mod.call((result, opts) => {
+      resultText = result
+      options = opts
+    }, {} as any)
+
+    expect(isProactiveActive()).toBe(false)
+    expect(resultText).toBe('Proactive mode disabled')
+    expect(options?.display).toBe('system')
+  })
+})