The companion app turns an absolute https `clickAction` into a bare
ACTION_VIEW intent, which Android 12+ hands to the default browser — a
Chrome-minted WebAPK never has verified links for its host, so every
notify/ask tap opened a browser tab next to the installed app.
New optional `pwa_package` / `pwa_origin` config: a notification URL on the
PWA's origin is sent as an `intent:` URI pinned to the WebAPK's package
(path + query kept), which the app launches by package. Other hosts stay
plain links; empty package = previous behaviour.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>