Bug

Discord voice messages are silently dropped and never reach the agent.

Cause

Voice messages have empty content field — the audio is in the attachment. The text resolution code uses nullish coalescing (??):

const text =
  message.content?.trim() ??
  media?.placeholder ??
  ...

Empty string ("") is falsy but not nullish, so it doesn't fall through to media?.placeholder.

Fix

Change ?? to || in src/discord/monitor.ts.

PR

#339