New

• platform: grant kalle owner membership of platform account #462
• smtp: add tokio listener + connection driver for receive module #448
• smtp: AUTH PLAIN + LOGIN with handler-owned rate limit #450
• smtp: STARTTLS upgrade via tokio-rustls for receive module #449
• worker: start parallel tokio-native SMTP listener for soak #455
• smtp: add tokio-native receive module (Handler trait + session FSM) #446
• smtp: emit per-kind ingress counters and listener liveness probe #444
• worker: daily digest of platform mailbox inbound to MAILBOX_DIGEST_TO #452
• platform: forbid non-platform accounts from claiming euromail.dev #447

Fixed

• dashboard: guard checks access in dns_records.html DMARC set #457