Add launch parameter to open Quick Chat window only

Feature request

Please add a command-line launch parameter for the Codex/ChatGPT desktop app that opens Quick Chat directly, without opening or focusing the full main application window.

For example:

Codex.exe --quick-chat

(or an equivalent URI/deep link such as codex://quick-chat).

Use case

Quick Chat already has a keyboard shortcut, but there is currently no straightforward way to create a Windows desktop/taskbar shortcut, Stream Deck action, launcher entry, or script that opens only the Quick Chat window.

A dedicated launch parameter would allow users to invoke Quick Chat directly from Windows shortcuts and external launchers without simulating keyboard input.

Expected behavior

Running the command should:

1. Start the app in the background if it is not already running.
2. Open only the Quick Chat window/popup.
3. Avoid opening the full main Codex window unless the user explicitly requests it.
4. If the app is already running, simply show/focus Quick Chat.

A URI/deep-link equivalent would also be useful for integrations and custom shortcuts.

No files or tests are named. Start by locating the desktop app's command-line or deep-link handling and the Quick Chat startup/focus entry points; done means the documented launch form starts or reuses the app, shows only Quick Chat, and avoids opening the main window.