Add Antigravity to supported editors in Open menu (macOS, Windows, and Linux)

[WilgotM]

Closes #343.

This is a small compatibility fix to let Antigravity appear in the Open menu when the editor is installed, even if its CLI command is not present on PATH.

The change follows the existing detection/launch pattern:

• command-based detection still works when agy is installed
• adds a minimal platform-specific fallback only for Antigravity so installed app builds are detected and launched (macOS and Windows)

No architecture changes or UI redesign were introduced.

Validation:

• bun lint (0 errors; 1 unrelated existing warning)
• bun typecheck (success; 1 unrelated existing TS5 message)

Note

Add Antigravity editor to the Open menu across macOS, Windows, and Linux

• Adds { id: 'antigravity', label: 'Antigravity', command: 'agy' } to the EDITORS constant in editor.ts.
• Adds AntigravityIcon to Icons.tsx and includes an Antigravity option in the OpenInPicker when antigravity appears in availableEditors.
• Adds a test case in open.test.ts verifying resolveEditorLaunch maps antigravity to command agy with the workspace path as its argument.

^{Macroscope summarized 0872930.}

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[Noojuno]

Can confirm this works for me on macOS (thank you for this, I have been using Antigravity lately to avoid paying for a Cursor sub)

[Noojuno]

@WilgotM you will need to update with main, there are conflicts 🙂

[WilgotM]

@WilgotM you will need to update with main, there are conflicts 🙂

Fixed