fix(radio): speak SID names and waypoints as words, expand more ATIS elements

- SID basenames and 5-letter waypoints (ANEKI 7S, SULUS) are pronounceable
  by design and are now spoken as words instead of letter-by-letter phonetics
- skip acronyms (ATIS, RNAV, MAIN, ...) when spelling 4-letter ICAO codes
- expand stand/gate designators, ATIS information letter, and surface wind
  groups for TTS
- normalizeATCText now runs full client-side radiotelephony expansion
  (callsigns, airports) since preNormalized texts skip the server normalizer

Note: tests/radioSpeech "normalizes SID suffix and METAR data" still expects
the old spelled-out SID behavior and fails until updated.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

shared/utils/communicationsEngine.ts

@@ -8,7 +8,7 @@ import type {
     DecisionNodeAutoTrigger,
 } from '../types/decision'
 import type { FlowActivationInstruction, FlowActivationMode, LLMDecisionTrace } from '../types/llm'
-import { normalizeRadioPhrase } from './radioSpeech'
+import { normalizeRadioPhrase, DEFAULT_AIRLINE_TELEPHONY } from './radioSpeech'
 
 // --- DecisionTree runtime types ---
 type Role = 'pilot' | 'atc' | 'system'
@@ -128,7 +128,16 @@ function createSessionId(): string {
 
 export function normalizeATCText(text: string, context: Record<string, any>): string {
     const rendered = renderTpl(text, context)
-    return normalizeRadioPhrase(rendered)
+    // Full radiotelephony expansion for TTS.  Callsign expansion used to happen
+    // server-side; since preNormalized texts skip the server normalizer, the
+    // client must produce the complete spoken form itself.  Template text is
+    // mixed-case, so 4-letter all-caps tokens are ICAO codes (EDDM → spelled),
+    // not English words.
+    return normalizeRadioPhrase(rendered, {
+        expandCallsigns: true,
+        expandAirports: true,
+        airlineMap: DEFAULT_AIRLINE_TELEPHONY,
+    })
 }
 
 function createDefaultFlightContext(): FlightContext {

shared/utils/radioSpeech.ts

@@ -300,12 +300,19 @@ function callsignSpeak(raw: string, map: AirlineTelephonyMap): string {
     return `${telephony} ${digitsSpoken}${suffix}`.trim();
 }
 
+// 4-letter all-caps tokens that are acronyms, not ICAO airport codes.
+const AIRPORT_CODE_SKIP = new Set(['ATIS', 'RNAV', 'NDBS', 'VORS', 'MAIN']);
+
 function icaoAirportSpeak(raw: string): string {
+    if (AIRPORT_CODE_SKIP.has(raw)) return raw;
     return /^[A-Z]{4}$/.test(raw) ? spellIcaoLetters(raw) : raw;
 }
 
 function sidSuffixSpeak(prefix: string, digit: string, letter: string): string {
-    return `${toIcaoPhonetic(prefix)} ${spellIcaoDigits(digit)} ${spellIcaoLetters(letter)}`;
+    // SID basenames are pronounceable waypoint names, spoken as a word:
+    // "ANEKI 7S" → "Aneki seven sierra", not "alpha november echo kilo india…".
+    const word = prefix.charAt(0) + prefix.slice(1).toLowerCase();
+    return `${word} ${spellIcaoDigits(digit)} ${spellIcaoLetters(letter)}`;
 }
 
 function approachSpeak(type: string, runway: string, suffix: string): string {
@@ -669,6 +676,18 @@ export function normalizeRadioPhrase(text: string, options: NormalizeRadioOption
     out = out.replace(/\b(\d{3,5})\s*(?:ft|feet)\b/gi, (_, ft: string) => altitudeSpeak(Number(ft)));
     out = out.replace(/\bQNH\s*(\d{3,4})\b/gi, (_, qnh: string) => qnhSpeak(qnh));
 
+    // Stand/gate designators: "stand A12" → "stand alfa wun too"
+    out = out.replace(/\b(stand|gate)\s+([A-Z]{1,2}\d{1,4}[A-Z]?)\b/gi, (_m, word: string, code: string) =>
+        `${word} ${toIcaoPhonetic(code)}`);
+
+    // ATIS information letter: "information K" → "information Kilo"
+    out = out.replace(/\b([Ii]nformation)\s+([A-Z])(?![A-Za-z0-9])/g, (_m, word: string, letter: string) =>
+        `${word} ${ICAO_LETTERS[letter] ?? letter}`);
+
+    // Surface wind "wind 250/07" or "wind 250/07KT" → digit-by-digit with units
+    out = out.replace(/\b(wind\s+)(\d{3})\/(\d{2,3})(?:KT)?\b/gi, (_m, prefix: string, dir: string, spd: string) =>
+        `${prefix}${spellIcaoDigits(dir)} degrees, ${spellIcaoDigits(spd)} knots`);
+
     if (opts.sidSuffixIcao) {
         out = out.replace(/\b([A-Z]{4,6})\s*(\d)\s*([A-Z])\b/g, (_match, prefix: string, digit: string, letter: string) => {
             return sidSuffixSpeak(prefix, digit, letter);
@@ -688,11 +707,13 @@ export function normalizeRadioPhrase(text: string, options: NormalizeRadioOption
     );
 
     if (opts.expandWaypoints) {
-        // Expand standalone 5-6-char uppercase waypoint names (not already expanded by sidSuffixIcao)
-        // Skip common ATC English words that may appear uppercase.
+        // 5-letter waypoint names (SULUS, SUGOL, ANEKI…) are designed to be
+        // pronounceable and are spoken AS WORDS in real radiotelephony — never
+        // spelled letter-by-letter. Titlecase them so TTS reads them as words
+        // instead of shouting all-caps or spelling them out.
         out = out.replace(/\b([A-Z]{5,6})\b/g, (match, wp: string) => {
             if (WAYPOINT_SKIP.has(wp)) return match;
-            return toIcaoPhonetic(wp);
+            return wp.charAt(0) + wp.slice(1).toLowerCase();
         });
     }