Address classroom tester feedback (Detlef / FSC e.V.)

Fixes the most impactful issues from ~1.5h of testing:

- TTS: spell SID prefixes phonetically (ANEKI → Alfa November Echo Kilo
  India) so unfamiliar waypoint names are intelligible without prior
  briefing context.
- TTS: expand standalone uppercase waypoints after via/direct (with a
  skip list for common ATC English tokens like MAYDAY, CLEARED, …).
- TTS: join taxi route tokens with ", " so pauses land between
  taxiways (C5, Z5, U10, …) instead of running together.
- TTS: handle "ILS Z 25C" variant before the runway → "ILS Zulu runway
  two five center" (was previously read as "Zee twentyfive cee").
- Scenarios: derive arrivalRunway from the chosen approach so the
  controller no longer clears a flight for ILS 25C onto runway 18.
- Radio check: accept any readability 1–5 (numeric or spoken), shorten
  placeholder so it fits the sm-width field.
- Line-up readback: clearer hint about the runway-first ICAO order.
- Classroom UI: disable browser autocomplete/autocorrect on readback
  inputs (Edge autofill was injecting unrelated values).
- Classroom UI: "Speak answer" button replays the expected readback as
  TTS so students can hear the correct phrasing.

Tests adjusted for the new SID and taxi-route phonetics.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/shared/radioSpeech.test.ts

@@ -25,14 +25,15 @@ describe('radioSpeech', () => {
     assert.match(normalized, /Lufthansa tree fife niner/)
     assert.match(normalized, /wun too wun decimal eight zero zero/)
     assert.match(normalized, /runway too fife right/)
-    assert.match(normalized, /November tree Uniform four/)
+    assert.match(normalized, /November tree,\s+Uniform four/)
   })
 
   it('normalizes SID suffix and METAR data', () => {
     const sid = normalizeRadioPhrase('MARUN 7F')
     const metar = normalizeMetarPhrase('EDDF 171450Z 28015G25KT 9999 -RA SCT025 BKN040 15/08 Q1013')
 
-    assert.equal(sid, 'MARUN seven Foxtrot')
+    // SID prefix is spelled phonetically so TTS pronounces unfamiliar waypoint names correctly
+    assert.equal(sid, 'Mike Alfa Romeo Uniform November 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/)

tests/smoke/normalize.smoke.test.ts

@@ -34,6 +34,6 @@ describe('normalize smoke', () => {
 
     assert.match(normalized, /Lufthansa tree fife niner/)
     assert.match(normalized, /runway too fife right/)
-    assert.match(normalized, /November tree Uniform four/)
+    assert.match(normalized, /November tree,\s+Uniform four/)
   })
 })