[IDE extension] Plugin detail page traps Codex sidebar with no way back to chat

What version of the IDE extension are you using?

26.5908.31748

What subscription do you have?

Not disclosed in this report.

Which IDE are you using?

VS Code, with the Codex extension running against a WSL2 remote extension host.

What platform is your computer?

Client: VS Code on Windows with WSL2.

Remote extension host:

Linux 5.15.167.4-microsoft-standard-WSL2 x86_64 x86_64

What issue are you seeing?

Opening a plugin detail page from an existing Codex chat replaces the entire Codex sidebar with the plugin page. The detail view has no visible Back or Close control. The user becomes trapped on that page and cannot return to the conversation.

Clicking the Codex icon in the VS Code Activity Bar only focuses the same plugin detail page again. Keyboard attempts do not recover the chat:

• Alt+Left acts on VS Code's central editor navigation.
• Ctrl+N acts outside the Codex sidebar and does not leave the plugin page.
• The installed extension manifest does not expose a Codex-specific Back command or keybinding.

The only successful recovery found was reloading the entire VS Code window.

The reproduced page was the OpenAI Developers plugin detail page. It showed the OpenAI Platform application as connected and an openai-api-key-local-confirmation MCP server. A screenshot confirmed that no back button was visible in the plugin detail header.

What steps can reproduce the bug?

1. Open an existing conversation in the Codex VS Code sidebar.
2. Open the Plugins section.
3. Select the OpenAI Developers plugin to open its detail page.
4. Try to return to the conversation.
5. Observe that there is no visible Back or Close control.
6. Click the Codex Activity Bar icon; the same plugin detail page remains open.
7. Try Alt+Left and Ctrl+N; they affect the main VS Code area rather than the focused Codex sidebar.
8. Reload the VS Code window to recover access to the chat.

What is the expected behavior?

The plugin detail page should provide an obvious Back or Close control that returns to the originating Codex conversation or plugin list.

A focus-aware keyboard command should also navigate back inside the Codex webview. Clicking the Codex Activity Bar icon while the detail page is open should offer a reliable route back to the chat or Codex home without requiring a full VS Code reload.

Additional information

This is distinct from plugin installation or OAuth status: the navigation trap occurs after the plugin detail page has rendered normally.

A search of existing openai/codex issues did not find an IDE-extension report matching this navigation trap. Issue #18455 concerns scroll-position loss when navigating back in the desktop plugin catalog, where a back route already exists; this report concerns the absence of any usable back route in the VS Code extension.

Reproduce the flow in the Codex VS Code sidebar: open an existing conversation, select Plugins, and open the OpenAI Developers detail page. Start by tracing the plugin detail navigation and its focus or command handling; done means the page offers a reliable Back or Close route to the conversation or plugin list without reloading the VS Code window.