New

• dashboard: add dark mode support to auth pages
• docs: add client-side search to API documentation
• docs: add SDK code examples with language tabs for all 4 SDKs
• status: configure Vartio status page with 5 monitors
• api: add docs_url field to error responses
• dx: add Makefile for common dev commands
• dashboard: add mailboxes page for agent mailbox management
• api: add agent mailboxes for AI agent email reception
• api: support custom domains for agent mailboxes

Fixed

• landing: correct doc links and left-align hero #329
• align design system (fonts, colors, CSP, GDPR) #328
• status: update links to use status.euromail.dev custom domain
• dashboard: update chart fonts to Satoshi and add dark mode support
• landing: add ARIA semantics to mobile menu and code tabs
• status: correct SMTP monitors to mail1/mail2.euromail.dev
• landing: add prefers-reduced-motion support for accessibility
• dashboard: increase DNS copy button touch targets to meet 44px minimum
• dashboard: replace Albert Sans remnants with Satoshi
• dashboard: serialize activity events as JSON to prevent HTML entity encoding in URLs
• dashboard: load custom fonts on standalone auth pages
• common: accept mail1/mail2.euromail.dev in MX verification
• dashboard: remove broken status page link
• landing: add branded 404 page replacing bare nginx default
• landing: serve quickstart and feature guides
• dashboard: correct MX record instructions on inbound emails page
• dashboard: show CNAME verification failure reason on tracking domain
• dashboard: correct route syntax in insights router