feat(chatgpt-bridge): add macOS ChatGPT plan bridge commands

[weixshaw]

Plugin type (required) / 插件类型（必填）

• UI Plugin / 是 UI 插件 — provides MCP Apps interactive pages / 提供 MCP Apps 交互页面
• Standard plugin / 普通插件（非 UI） — does not provide MCP Apps interactive pages / 不提供 MCP Apps 交互页面
• Not applicable / 不适用 — repository-only changes; no plugin content changed / 仅仓库级改动，不涉及插件内容

Affected plugin name(s) / 涉及的插件名称：chatgpt-bridge (standard plugin).

What / 改动内容

ZCode users running the companion macOS ChatGPT plan bridge need a reusable way to open its sign-in/setup dashboard, inspect service/account state, refresh their account's model catalog and diagnose connectivity. This adds four standard commands under external_plugins/chatgpt-bridge/ and registers version 0.1.1 in the community marketplace:

• /chatgpt-connect
• /chatgpt-status
• /chatgpt-models
• /chatgpt-doctor

The companion must be installed separately from weixshaw/zcode-chatgpt-bridge; a reviewed source release and macOS ZIP are available at v0.1.1. The plugin contains only the manifest, commands, bilingual READMEs and MIT license. Its dashboard is an external localhost browser page, so this is not an MCP Apps UI Plugin.

Dependencies and side effects

• macOS, Node.js 22+ on the Agent PATH, the companion installation, and an eligible ChatGPT account explicitly authorized for plan usage.
• Commands run the local companion CLI through the Agent's normal tool permission flow. connect opens the system browser. models/doctor can cause the companion to query OpenAI.
• No Hooks or MCP servers are registered. Installing this command plugin alone does not install the service or change the active model/provider.
• The separately installed companion uses auth.openai.com and api.openai.com, protected current-user credential storage, a loopback listener and a current-user LaunchAgent. The dashboard's explicit “应用到 ZCode” action adds the local provider after backing up the existing configuration. Full network/file-write/credential/cleanup details are in both READMEs.
• Plugin/companion are MIT; the companion's pinned jose and undici dependencies are MIT. No proprietary ZCode code, Codex credential files, user tokens or prebuilt binaries are included in this submission. This is an independent third-party community integration.

Validation

• python3 scripts/validate.py: passes for all 47 marketplace entries.
• ZCode 3.15.3 bundled CLI plugins validate: passes, no diagnostics.
• Using the unchanged official validate.py, build_dist.py and buildPlugins implementation against an isolated marketplace containing this exact plugin: passes; produces chatgpt-bridge/0.1.1/plugin.zip and a local marketplace.
• Companion npm run check, 19 automated tests, and dependency audit: pass, 0 reported vulnerabilities. Public GitHub CI is green.
• The locally installed four command bodies were discovered by ZCode. The companion core completed real GPT-6.1-Sol text, function-call and tool-result continuation checks, then a ZCode 3.15.3 task that wrote/read a temporary file and returned NATIVE_OK. Details and limits are in the companion's VERIFICATION.md.
• git diff --check: passes.

Full-repository build limitation: pnpm install --frozen-lockfile passed, but pnpm build stopped in the existing photocraft plugin because this machine lacks rustup. The full python3 scripts/build_dist.py then stopped on PhotoCraft's incomplete build. Those plugins are outside this PR; the exact submitted command plugin passes the official build/distribution functions in isolation. No Rust/toolchain or unrelated plugin changes are included.

Self-check / 自查清单

• Plugin name is unique kebab-case; new external plugin directory is external_plugins/chatgpt-bridge/.
• Usage category is developer-tools, independently of community ownership.
• Plugin type and affected name declared above.
• New version 0.1.1 matches in the manifest and marketplace entry (local companion/plugin 0.1.0 preceded this public release).
• Equivalent English and Chinese READMEs are included.
• description_i18n contains en and zh-CN.
• No credentials, private data, machine-specific user paths or private dependencies are included.
• Model/API/network dependencies and side effects are documented.
• Full-repository pnpm build and build_dist.py pass locally — blocked by the unrelated PhotoCraft Rust prerequisite described above; this plugin's isolated official validation/build/distribution checks pass.

[panda920]

✅ Internal validation passed. A ZCode maintainer will review the change next; after acceptance, release checks run separately and this PR is closed automatically.