ci: fix red radioSpeech assertion and add a test/typecheck pipeline

The suite was red on main: the SID test still expected the old
letter-by-letter spelling ("Mike Alfa Romeo...") after the pronunciation
change to speak named waypoints as words ("Marun seven Foxtrot"). Update the
stale assertion.

Add a GitHub Actions workflow: yarn install + yarn test as the required gate,
plus a non-blocking vue-tsc job (TS strict mode is still off — promote to
required after that cleanup). Suite now 80/80.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/shared/radioSpeech.test.ts

@@ -33,8 +33,8 @@ describe('radioSpeech', () => {
     const sid = normalizeRadioPhrase('MARUN 7F')
     const metar = normalizeMetarPhrase('EDDF 171450Z 28015G25KT 9999 -RA SCT025 BKN040 15/08 Q1013')
 
-    // SID prefix is spelled phonetically so TTS pronounces unfamiliar waypoint names correctly
-    assert.equal(sid, 'Mike Alfa Romeo Uniform November seven Foxtrot')
+    // SID identifier: the named waypoint is spoken as a word, the number and suffix letter are spelled out
+    assert.equal(sid, 'Marun seven Foxtrot')
     assert.match(metar, /wind too eight zero degrees/)
     assert.match(metar, /gusting too fife knots/)
     assert.match(metar, /QNH wun zero wun tree/)