[FEATURE] Open files in Cursor IDE from Codex macOS app

What feature would you like to see?

The Codex macOS app should support opening files in Cursor IDE (in addition to VS Code).

When Codex references or outputs file paths, users should be able to click to open them directly in Cursor. This could be implemented as:

1. A configurable "default editor" setting in the Codex macOS app preferences (supporting VS Code, Cursor, Windsurf, and other editors)
2. Automatic detection of the user's default IDE
3. A cursor://file/{path}:{line} URI scheme handler, similar to how vscode:// URIs work

Many developers have migrated from VS Code to Cursor as their primary editor, so first-class Cursor support would improve the workflow significantly.

Additional information

• Cursor supports the cursor://file/ URI scheme for opening files
• Platform: macOS (Tahoe 16.2, arm64)
• Codex version: codex-cli 0.98.0