feat(electron): grant microphone and clipboard permissions

[Maskar]

Summary

• Grant media (microphone) and clipboard-read permissions via Electron's permission handler
• Add com.apple.security.device.audio-input entitlement for macOS builds

Motivation

Voice input and clipboard access are blocked by default in Electron. This enables CLI tools that use microphone input and ensures Cmd+V paste works reliably in terminals.

Test plan

• Voice input works in terminal sessions
• Cmd+V paste works in terminals

[johannesjo]

Thanks for the PR @Maskar — nice and clean change. Two things I'd like addressed before merging:

1. media permission grants camera access too (critical)

permission === 'media' passes for both audio and video requests. The handler's 4th parameter (details) includes mediaTypes which should be checked to restrict this to audio only:

session.defaultSession.setPermissionRequestHandler(
  (_webContents, permission, callback, details) => {
    if (permission === 'clipboard-read') {
      return callback(true);
    }
    if (permission === 'media') {
      const types = (details as { mediaTypes?: string[] }).mediaTypes ?? [];
      // Only grant audio (microphone), deny video (camera)
      return callback(types.every((t) => t === 'audio'));
    }
    callback(false);
  },
);

2. Missing NSMicrophoneUsageDescription for macOS (important)

With hardenedRuntime: true, macOS requires a usage description string for microphone access — without it the OS will silently deny the permission. Add via extendInfo in package.json:

"mac": {
  "extendInfo": {
    "NSMicrophoneUsageDescription": "Parallel Code needs microphone access for voice input in terminal sessions."
  },
  ...
}

[johannesjo]

Thank you very much!