按需安装引擎并统一模板与文件卡片适配

[Devin-AXIS]

结果

• 将 Codex Harness、DeepSeek Harness 改为可检测、按需安装和卸载的独立引擎包，保留工作区与会话数据。
• 在项目创建与设置中增加统一的引擎安装状态、启动过渡和引擎管理界面。
• 统一多引擎模板内部上下文与文件输出卡片协议，移除公共 UI 文本猜测、旧卡片字段和无效自动打开路径。
• 加强 Codex OAuth 刷新时机及过期状态提示，并补齐服务端文件解析与引擎适配测试。

验证

• pnpm --filter @ipollowork/app typecheck
• pnpm --filter ipollowork-server typecheck
• App 全量测试：931 passed, 0 failed
• 相关服务端测试：40 passed, 0 failed
• git diff --check
• 可维护性审计通过
• Fraimz app-smoke 通过
• Electron 开发版重建并实测 DeepSeek 模板标签、隐藏上下文和 Design 文件卡片打开

已知的基线测试差异

服务端全量测试为 533 passed / 3 skipped / 3 failed。失败项是两个已下架竖屏视频模板的目录断言，以及一个已经返回 sessionId 但测试仍按旧响应断言的用例；均不在本次改动路径。

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Resolve engine versions from inside the packaged ASAR

In every packaged desktop build, constants.json is staged under server/dist and included by the builder's files: server/**/*, so it lives inside app.asar, not at process.resourcesPath/server/dist/constants.json (only bundled templates are copied there as an extra resource). This lookup therefore fails and all engine versions become unknown; installation then requests assets such as ipollowork-engine-codex-harness-...-unknown.tar.gz, while the release workflow publishes versioned filenames, causing optional engine downloads to return 404. Add the packaged __dirname/../server/dist/constants.json location or copy the constants file into extraResources.

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