feat: add second-victory relief exploration

scripts/verify-audio-asset-data.mjs

@@ -8,11 +8,15 @@ const sourceFilesToScan = [
   'src/game/audio/SoundDirector.ts',
   'src/game/scenes/BattleScene.ts',
   'src/game/scenes/CampScene.ts',
+  'src/game/scenes/CampVisitExplorationScene.ts',
   'src/game/scenes/EndingScene.ts',
   'src/game/scenes/StoryScene.ts',
   'src/game/scenes/TitleScene.ts'
 ];
 const requiredBattlefieldAmbienceKeys = ['battle-rain', 'battle-fire'];
+const requiredDaytimeExplorationAmbienceKeys = [
+  'riverside-village-day-ambience'
+];
 const requiredTacticalCueKeys = [
   'ally-turn',
   'enemy-turn',
@@ -68,6 +72,14 @@ const battlefieldSourceRecords = [
     source: 'https://pixabay.com/sound-effects/film-special-effects-failure-1-89170/'
   }
 ];
+const riversideDaySourceRecord = {
+  trackKey: 'riverside-village-day-ambience',
+  projectFile:
+    'src/assets/audio/ambience/riverside-village-day-ambience.mp3',
+  source:
+    'https://pixabay.com/sound-effects/nature-stream-water-with-birds-459511/',
+  creator: 'loswin23'
+};
 const narrativeSourceRecord = {
   projectFile: 'src/assets/audio/sfx/story-page-turn.mp3',
   source: 'https://pixabay.com/sound-effects/film-special-effects-flipping-book-page-499646/',
@@ -130,10 +142,17 @@ try {
   validateTrackMap(errors, 'ambience', ambienceTracks, 'ambience');
   validateTrackMap(errors, 'effect', effectTracks, 'sfx');
   validateRequiredTrackKeys(errors, 'battlefield ambience', ambienceTracks, requiredBattlefieldAmbienceKeys);
+  validateRequiredTrackKeys(
+    errors,
+    'daytime exploration ambience',
+    ambienceTracks,
+    requiredDaytimeExplorationAmbienceKeys
+  );
   validateRequiredTrackKeys(errors, 'tactical cue', effectTracks, requiredTacticalCueKeys);
   validateRequiredTrackKeys(errors, 'narrative cue', effectTracks, requiredNarrativeCueKeys);
   validateRequiredTrackKeys(errors, 'semantic feedback cue', effectTracks, requiredSemanticFeedbackCueKeys);
   validateBattlefieldSourceDocumentation(errors);
+  validateRiversideDaySource(errors, ambienceTracks);
   validateNarrativeSourceDocumentation(errors);
   validateSemanticFeedbackSourceDocumentation(errors);
   validateMovementSourceDocumentation(errors);
@@ -465,6 +484,70 @@ function linearGainDb(gain) {
   return 20 * Math.log10(Math.max(0.0001, gain));
 }
 
+function validateRiversideDaySource(errors, ambienceTracks) {
+  const docs = readFileSync(join('docs', 'audio-sources.md'), 'utf8');
+  const requiredDetails = [
+    '2026-07-27',
+    riversideDaySourceRecord.projectFile,
+    riversideDaySourceRecord.source,
+    'Stream Water with Birds',
+    riversideDaySourceRecord.creator,
+    '32-second',
+    '44.1 kHz stereo MP3',
+    'two-second end-to-start',
+    '-24.03 LUFS',
+    '128 kbps'
+  ];
+  requiredDetails.forEach((detail) => {
+    if (!docs.includes(detail)) {
+      errors.push(
+        `docs/audio-sources.md is missing daytime riverside detail "${detail}"`
+      );
+    }
+  });
+
+  if (!audioInspectionToolsAvailable(errors)) {
+    return;
+  }
+  const url = ambienceTracks[riversideDaySourceRecord.trackKey];
+  const path = url ? assetUrlToPath(url) : undefined;
+  if (!path) {
+    errors.push('The daytime riverside ambience must resolve to a project asset.');
+    return;
+  }
+  const probe = probeAudio(path, errors, riversideDaySourceRecord.trackKey);
+  if (!probe) {
+    return;
+  }
+  if (probe.duration < 31.9 || probe.duration > 32.2) {
+    errors.push(
+      `${riversideDaySourceRecord.trackKey} must remain a 32-second loop; ` +
+        `received ${probe.duration.toFixed(3)} seconds`
+    );
+  }
+  if (probe.sampleRate !== 44_100 || probe.channels !== 2) {
+    errors.push(
+      `${riversideDaySourceRecord.trackKey} must be 44.1 kHz stereo; ` +
+        `received ${probe.sampleRate} Hz/${probe.channels} channels`
+    );
+  }
+  if (!probe.artist.includes(riversideDaySourceRecord.creator)) {
+    errors.push(
+      `${riversideDaySourceRecord.trackKey} metadata must retain creator ` +
+        `"${riversideDaySourceRecord.creator}"`
+    );
+  }
+  if (
+    !probe.comment.includes('Pixabay Content License') ||
+    !probe.comment.includes(riversideDaySourceRecord.source)
+  ) {
+    errors.push(
+      `${riversideDaySourceRecord.trackKey} metadata must retain its Pixabay ` +
+        'license and source URL'
+    );
+  }
+}
+
 function validateBattlefieldSourceDocumentation(errors) {
   const docs = readFileSync(join('docs', 'audio-sources.md'), 'utf8');
   if (!docs.includes('2026-07-21')) {