- recordings.routes.ts: cast req.params.id to string (express 5 typed params) - recordings.service.ts: cast Record<string,unknown>[] via unknown first - guilds.routes.ts: cast req.params.guildId to string (2 sites) - transmitter.ts: capture pcmStream ref locally + re-acquire in drain callback Co-Authored-By: Claude <noreply@anthropic.com>