fix(chat): stabilize message identities

src/app/chat/components/voice-bubble.tsx

@@ -9,7 +9,7 @@ import styles from "./voice-bubble.module.css";
 
 export interface VoiceBubbleProps {
   characterId: string;
-  messageId?: string;
+  remoteMessageId?: string;
   audioUrl?: string | null;
   isFromAI: boolean;
   locked?: boolean;
@@ -20,7 +20,7 @@ export interface VoiceBubbleProps {
 
 export function VoiceBubble({
   characterId,
-  messageId,
+  remoteMessageId,
   audioUrl,
   isFromAI,
   locked = false,
@@ -36,7 +36,7 @@ export function VoiceBubble({
   const { mediaUrl, isUsingCachedMedia, reportMediaError } =
     useCachedChatMediaUrl({
       characterId,
-      messageId,
+      messageId: remoteMessageId,
       remoteUrl: audioUrl,
       kind: "audio",
     });