[PB-6379]:feat/add Firefox MV2 support#17
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May 12, 2026
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Prepare the extension for Firefox by migrating all chrome.* API calls to browser.* across all entrypoints. Add as const type casts required by the stricter polyfill types. Fix Firefox popup blank screen caused by h-screen resolving to 1px in Firefox's popup viewport. Add CI/CD workflow to build and validate both Chrome MV3 and Firefox MV2 targets on every push and PR.
In Firefox, changing the VPN location while connected does not take effect due to proxy settings being cached at the browser process level. The only way to clear this cache is a full Firefox restart.
Solution:
When a Firefox user tries to change location while the VPN is ON, a modal appears explaining they need to restart Firefox to apply the change.
The location change is blocked while connected. The user can still disconnect using the toggle, but reconnecting is blocked until Firefox is restarted.
If the user tries to toggle the VPN back ON after a location change, the modal appears again as a reminder.
No modal is shown if the user disconnects and reconnects to the same location they were already on.