Add support for WebStorm in "Open In" list

What version of Codex is running?

Version 260202.0859 (517)

What subscription do you have?

plus

Which model were you using?

_No response_

What platform is your computer?

macos

What terminal emulator and version are you using (if applicable)?

_No response_

What issue are you seeing?

Hi! In the Codex desktop app on macOS, the Open button lists some editors (e.g., VS Code), but JetBrains WebStorm is missing when it’s installed in ~/Applications (common JetBrains Toolbox location).

What happened

• WebStorm doesn’t appear in the Open app list.

What I expected

• WebStorm should appear in the list even when installed in ~/Applications (or Codex should allow choosing it once and then remember).

Workaround

• Move/install WebStorm into /Applications — then it may show up.

Suggestion / possible fix

• On macOS, include ~/Applications in editor discovery, and/or use LaunchServices to enumerate installed apps/handlers (so Toolbox-managed JetBrains IDEs are discoverable without requiring /Applications).

Environment

• Codex desktop app version: [fill in]
• macOS version: [fill in]
• WebStorm version: [fill in]
• WebStorm install path: ~/Applications/WebStorm.app

What steps can reproduce the bug?

1. Install WebStorm using JetBrains Toolbox (or otherwise) into ~/Applications/WebStorm.app.
2. Open Codex desktop app.
3. Click Open (to open the current workspace/project in an editor).
4. Observe that WebStorm is not listed.

What is the expected behavior?

• WebStorm should appear in the list even when installed in ~/Applications (or Codex should allow choosing it once and then remember).

Additional information

_No response_