Turn system redesign:
- Turn order auto-populated from config bindings (all bot accounts)
- No manual turnOrder config needed
- Humans (humanList) excluded from turn order automatically
- Dormant state: when all agents NO_REPLY in a cycle, currentSpeaker=null
- Reactivation: any new message wakes the system
- Human message → start from first in order
- Bot not in order → start from first
- Bot in order → next after sender
- Skip already-NO_REPLY'd agents when advancing
Identity injection:
- Group chat prompts now include agent identity
- Format: '你是 {name}（Discord 账号: {accountId}）'
Other:
- Remove turnOrder from ChannelPolicy (no longer configurable)
- Add TURN-WAKEUP-PROBLEM.md documenting the NO_REPLY wake-up challenge
- Update message_received to call onNewMessage with proper human detection
- Update message_sent to call onSpeakerDone with NO_REPLY tracking
