genSquawk() drew a decimal number in 1000-8999, so clearances could contain
the digits 8 or 9 — codes no transponder can dial. Replace it with a shared
generateSquawk() that draws four octal digits and re-rolls the reserved codes
(7500/7600/7700, 7000, 2000, 1200, 0000).
shared/learn/scenario.ts had its own octal generator that could still draw an
emergency code; it now uses the same helper.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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>
