fix(voice): delay voice restore after screen share — avoid session teardown race

Immediate reconnect after Streamer.stop() races Discord's voice session
teardown → AbortError. Wait 4s so the old session is fully released before
re-joining with @discordjs/voice.

services/discord-gateway/src/modules/voice-recording/screenShareController.ts

@@ -127,12 +127,17 @@ export class ScreenShareController {
           /* already gone */
         }
         if (this.restoreVoice) {
+          // Wait for Discord to fully release the Streamer's voice session
+          // before re-joining with @discordjs/voice — an immediate join races
+          // the session teardown and times out with AbortError.
+          setTimeout(() => {
             Promise.resolve(this.restoreVoice(status)).catch((err) => {
               this.logger.warn(
                 { error: err instanceof Error ? err.message : String(err) },
                 "Failed to restore voice connection after screen share",
               );
             });
+          }, 4000);
         }
       };
       const done = playStream(output, this.streamer, {