Feature Request: Firefox support via native messaging

[EuBeans]

Feature Request

Is your feature request related to a problem?
The extension currently only supports Chrome/Chromium-based browsers (Chrome, Brave, Chromium). Users on Firefox cannot use the browser automation plugin.

Describe the solution you'd like
Add Firefox support

Current behavior
The installer only writes native messaging manifests to Chrome/Chromium/Brave paths and the manifest.json lacks Firefox compatibility fields.