It's pretty annoying to have to scroll past all the old recordings to
be able to set the config. Since logs we already have figured out how to
create modals, so let's reuse that code.
It's more common to write functions in camelCase in JS, so some people
started doing it, including me. But the majority of the codebase is
snake_case, so let's enforce that.
- Add POST /api/test-notification endpoint to send test to saved config URL
- Refactor send_notification to return Result instead of bool
- Add NotificationError enum for proper error handling
- Add test notification button in config UI with explanatory text
- Button tests saved configuration URL, not input field value
Add a reanalyze button for individual recordings in the analysis dropdown
As part of this, split out ApiRequestButton so that state transitions
(clickable -> loading/disabled -> done) can be shared across start/stop
recording and this new button. Other buttons might benefit from this as
well.
Also fix a broken checkbox while we're here.
