fix: No longer displays edited on all messages and fix Disconnected from signaling server on multiple clients

toju-app/CONTEXT.md

@@ -24,7 +24,7 @@ Owns the user-facing Angular 21 desktop chat experience: rendering and orchestra
 | **Custom emoji** | User-created image emoji assets stored locally, synced peer-to-peer, and referenced from messages/reactions by stable `:emoji[id](name)` tokens. | "sticker", "emote" |
 | **App locale** | The active UI language for the product client, resolved by `resolveAppLocale()` in `core/i18n/`; only `en` is shipped today. | "language", "i18n locale" |
 | **Translation catalog** | JSON string tables under `public/i18n/catalog/*.json`, merged to `public/i18n/en.json` via `npm run i18n:sync`, loaded at startup by `AppI18nService`. | "locale file", "messages file" |
-| **Client instance** | Stable per-install UUID (`metoyou.clientInstanceId`) sent on WebSocket `identify` and voice-state payloads so the signaling server can route multi-device sessions. | "device id", "session id" |
+| **Client instance** | Stable per-tab UUID (`metoyou.clientInstanceId` in `sessionStorage`) sent on WebSocket `identify` and voice-state payloads so the signaling server can route multi-device sessions without evicting other tabs or synced profiles. | "device id", "session id" |
 | **Voice owner connection** | The single client instance whose `clientInstanceId` matches the user's active `voiceState.clientInstanceId` and therefore owns mic/WebRTC for that identity. | "active voice client" |
 
 ## Relationships