Stable v2.10.55

Features

• Migrate Enhance spam-action thresholds and allow/block lists to rspamd
• Add Enhance cluster node discovery and per-node connection test
• Migrate real DNS records from Enhance zone files

Improvements

• Add missing agent route for Sieve script migration
• Persist SSL status and retry failed mail. cert issuance
• Replace stale Roundcube reference in webmail toggle copy
• Persist SSL status and retry failed webmail cert issuance
• Query multiple resolvers so one stale cache can't hide a fixed record
• Resolve owning server for mail-host/panel certs in multi-server fleets
• Un-leak task uncommitted ListClusterNodes from the DNS commit
• Translate literal-English cron/ftp/databases labels in nl/pt
• Clarify emailDesc mode-dependent password reset in all 15 locales
• Scope the New Session type dropdown to the chosen provider