Released version 4.1.2

• Interceptor – a new mailer wrapper that redirects all outgoing To/Cc/Bcc (plus read-receipt headers) to one fixed address, preserves the originals in X-Original-* headers, and optionally adds a subject prefix. No more sending test mail to real customers by accident. Wire it via DI with mail.redirect: dev@example.com and it slots in automatically.
• MailTracy Bar panel – a new Bridges/MailTracy/MailPanel subscribes to Interceptor::$onSent and lists each sent message (From / To+Cc+Bcc / Subject / Status) right in the Tracy Bar. Auto-registers in debug mode whenever the Interceptor is active; opt in or out explicitly with mail: debugger: true|false.
• HtmlComposer – a standalone HTML pre-processing pipeline you can drive directly: opt in to inlineCss() (accumulates stylesheets across calls), embedImages($basePath), and let it handle <title> to subject extraction and plain-text alternative generation. Message::setHtmlBody() keeps working as a BC-friendly facade.