Feature request: launch desktop app by a custom protocol link/button from web app to do/init action

_searched issues to see if already requested, if I missed it sorry, you can close right away._

although I wouldn't use it (I prefer CLIs when available),
I think you should have have secondary buttons* for actions that need a passphrase in the browser to perform, that launch the app with custom URI scheme containing action type and payload to automatically do/init/start the action issued from the web app in desktop app. without entering your passphrase, in the browser, each time you un/follow.

`*` although I'm not a designer or a UI/UX expert, I suggest having buttons similar to GitHub's watch,star and fork buttons (see above), like so: [Follow]|[``], so with one click**, on the icon, app launches & etc. etc (not the bigger main primary [Follow] button so this dialogue*** doesn't open and you keep existing functionality).
`**` (2 actually) for better security you have to click launch in a browser dialogue to launch apps.
`***` this dialogue:

No files, tests, or entry points are named. Begin by identifying the existing web actions and desktop protocol handlers, then define the browser confirmation, action payload, and passphrase behavior; done means a supported link or button launches the desktop app and performs the requested action.

Written by the indexing model from the issue text.