fix(ebike): force-stop narrator audio + clear subtitle when leaving ebike state

src/components/game/EbikeRepairNarrator.tsx

@@ -5,6 +5,7 @@ import {
   EBIKE_SCAN_HINT_DIALOGUE_ID,
 } from "@/data/ebike/ebikeConfig";
 import { useGameStore } from "@/managers/stores/useGameStore";
+import { useSubtitleStore } from "@/managers/stores/useSubtitleStore";
 import type { MissionStep } from "@/types/gameplay/repairMission";
 import { loadDialogueManifest } from "@/utils/dialogues/loadDialogueManifest";
 import { playDialogueById } from "@/utils/dialogues/playDialogue";
@@ -18,6 +19,11 @@ import { playDialogueById } from "@/utils/dialogues/playDialogue";
  * Each cue is one-shot per mission run; the played-set resets when the
  * mission state rolls back to `locked`/`waiting` so debug-panel replays
  * still trigger the narration.
+ *
+ * Audio AND subtitles are strictly scoped to `mainState === "ebike"`. If
+ * the player leaves the ebike main state mid-line (debug panel jump,
+ * mission transition, etc.), the active audio is paused and the
+ * subtitle is force-cleared so nothing bleeds into pylon/farm/outro.
  */
 const STEP_TO_DIALOGUE_ID: Partial<Record<MissionStep, string>> = {
   fragmented: EBIKE_SCAN_HINT_DIALOGUE_ID,
@@ -25,10 +31,19 @@ const STEP_TO_DIALOGUE_ID: Partial<Record<MissionStep, string>> = {
   done: EBIKE_REPAIRED_DIALOGUE_ID,
 };
 
+function stopAudio(audio: HTMLAudioElement | null): void {
+  if (!audio) return;
+  if (!audio.paused) {
+    audio.pause();
+    audio.currentTime = 0;
+  }
+}
+
 export function EbikeRepairNarrator(): null {
   const mainState = useGameStore((state) => state.mainState);
   const ebikeStep = useGameStore((state) => state.ebike.currentStep);
   const playedRef = useRef<Set<MissionStep>>(new Set());
+  const activeAudioRef = useRef<HTMLAudioElement | null>(null);
 
   useEffect(() => {
     if (ebikeStep === "locked" || ebikeStep === "waiting") {
@@ -36,6 +51,18 @@ export function EbikeRepairNarrator(): null {
     }
   }, [ebikeStep]);
 
+  // Belt-and-suspenders: any time we are NOT in the ebike main state,
+  // make sure no narrator audio or subtitle from this component is
+  // lingering. This catches races where the audio started a tick before
+  // the main state flipped and the per-step cleanup hadn't propagated
+  // yet (subtitle event still queued, etc.).
+  useEffect(() => {
+    if (mainState === "ebike") return;
+    stopAudio(activeAudioRef.current);
+    activeAudioRef.current = null;
+    useSubtitleStore.getState().clearActiveSubtitle();
+  }, [mainState]);
+
   useEffect(() => {
     if (mainState !== "ebike") return;
 
@@ -46,28 +73,24 @@ export function EbikeRepairNarrator(): null {
     playedRef.current.add(ebikeStep);
 
     let cancelled = false;
-    let activeAudio: HTMLAudioElement | null = null;
 
     void (async () => {
       const manifest = await loadDialogueManifest();
       if (cancelled || !manifest) return;
       const audio = await playDialogueById(manifest, dialogueId);
       if (cancelled) {
-        if (audio && !audio.paused) {
-          audio.pause();
-          audio.currentTime = 0;
-        }
+        stopAudio(audio);
+        useSubtitleStore.getState().clearActiveSubtitle();
         return;
       }
-      activeAudio = audio;
+      activeAudioRef.current = audio;
     })();
 
     return () => {
       cancelled = true;
-      if (activeAudio && !activeAudio.paused) {
-        activeAudio.pause();
-        activeAudio.currentTime = 0;
-      }
+      stopAudio(activeAudioRef.current);
+      activeAudioRef.current = null;
+      useSubtitleStore.getState().clearActiveSubtitle();
     };
   }, [mainState, ebikeStep]);