New

• worker: system email metrics + PII log scrubbing #404
• domains: include DMARC record in domain setup DNS table #398
• smtp: route system emails through worker via email:system stream #397

Fixed

• queue: loop XAUTOCLAIM cursor until pending list is drained #401
• auth: rate-limit forgot_password_submit (per-IP + per-email) #400
• smtp: bind system email egress to SENDING_IPS[0] #395
• dashboard: register mailboxes/message_detail.html in template env #394