feat(desktop): share the Local Runtime Host

[M4n5ter]

English

Summary

Let a user expose the current computer's Local Runtime Host to another Maka Desktop without creating a second Host or copying its State Root

• hands the existing Local Host from the ephemeral Desktop child to the OS-managed service
• keeps Local IPC and experimental Direct peer active on the same Host
• adds versioned, one-time Owner connection codes and an atomic import flow
• keeps disabling connectivity separate from uninstalling the service or revoking credentials

#3950 is merged; this PR is based on main

Refs #3842

Verification

• npm run typecheck
• npm run lint -- --diagnostic-level=error
• npm run format:check
• npm run build
• npm run check:stale
• npm run check:asf-headers
• npm run astryx:surface-inventory
• affected CLI, Runtime Host, and Desktop test suites
• real two-Desktop connection-code import over Direct peer, including disable, re-enable, and service uninstall
• Electron UI checked through CDP with isolated profiles

UI

Before:

After:

AI use

• No generative tool made a substantive contribution
• Generative tooling made a substantive contribution

Tool(s) and scope: OpenAI Codex assisted with implementation, tests, documentation, and verification under the contributor's direction

Checklist

• Tests cover the change and fail without it
• Lint, format, typecheck and the affected suites pass locally

Does this PR entail a change in behavior?

• Yes — described under Summary above
• No

中文

摘要

允许用户把当前电脑的 Local Runtime Host 提供给另一台 Maka Desktop 使用，同时不创建第二个 Host，也不复制 State Root

• 将现有 Local Host 从 Desktop 临时子进程交接给操作系统托管服务
• 同一个 Host 同时保留 Local IPC 与实验性的 Direct peer listener
• 增加版本化、一次性的 Owner 连接码和原子导入流程
• 明确区分关闭连接方式、卸载服务与撤销凭据

#3950 已合并；本 PR 现基于 main

关联 #3842

验证

• npm run typecheck
• npm run lint -- --diagnostic-level=error
• npm run format:check
• npm run build
• npm run check:stale
• npm run check:asf-headers
• npm run astryx:surface-inventory
• 受影响的 CLI、Runtime Host 与 Desktop 测试套件
• 使用两个真实 Desktop 通过 Direct peer 导入连接码，并验证关闭、重新开启和卸载服务
• 使用隔离 profile 通过 CDP 检查 Electron UI

界面

修改前：

修改后：

AI 使用

• 没有生成式工具作出实质贡献
• 生成式工具作出了实质贡献

工具与范围：OpenAI Codex 在贡献者指导下协助实现、测试、文档与验证

检查清单

• 测试覆盖本次变更，并会在缺少变更时失败
• lint、format、typecheck 与受影响测试套件均已在本地通过

本 PR 是否改变行为？

• 是——已在摘要中说明
• 否