Fix normal radio report submission

The radio button was connected only to the emergency hold handlers, so a
normal Send request never reached _submit. Connect pressed for non-emergency
calls while keeping hold-to-confirm exclusive to emergencies, and add tests
for click, short-hold rejection and full emergency hold. Headless 249/249,
Python 94/94.

README.md

@@ -38,9 +38,9 @@ precision walk, the Joke Shop alley, the TV Studio arrival, and the prop lineup.
 > Downloads are public (no sign-in required) since the host's instance-wide
 > `REQUIRE_SIGNIN_VIEW` was disabled on 2026-10-31.
 >
-> **Latest: v0.8.0** — first-shift tutorial, campaign/checkpoint resume,
-> difficulty and a searchable Help overlay, plus the v0.7.x judge, Desktop HQ,
-> venue and gear work.
+> **Latest: v0.8.1** — normal radio reports now send correctly, on top of the
+> v0.8.0 tutorial/campaign/resume pass and the v0.7.x judge, Desktop HQ, venue
+> and gear work.
 > Releases are built automatically when a `vX.Y.Z` tag is pushed
 > (see [`docs/RELEASING.md`](docs/RELEASING.md)); manual builds use
 > `./tools/build_releases.sh`. Installer/AppImage packaging runs in the same pipeline