chore: biome lint cleanup — formatting, unused imports, exhaustive-deps fixes

- Backend: fix redis-bridge.ts import formatting
- Frontend: fix formatting in messages/view, recordings/view, ambient-canvas, voice-stage
- Frontend: remove unused imports/vars in EditHistory, ambient-canvas
- Frontend: fix import sorting in LiveModerationFeed
- Frontend: suppress caller-controlled exhaustive-deps in use-gsap-animation
- All services: lint clean, typecheck pass, build pass
- Backend e2e tests excluded (require live server, expected 404s)

services/backend/src/ws/redis-bridge.ts

@@ -1,5 +1,8 @@
 import Redis from "ioredis";
-import { clearAllSpeakers, recordSpeaker } from "../modules/voice/live-speaker.js";
+import {
+  clearAllSpeakers,
+  recordSpeaker,
+} from "../modules/voice/live-speaker.js";
 import { config } from "../shared/config/index.js";
 import {
   DISCORD_CHANNEL_TO_WS_EVENT,