Resend CLI 2.0 adds agent skills, webhook listening

Resend is positioning itself as the "Stripe for Email" by making email a first-class citizen for AI agents.

• –Agent Skills provide a structured interface for LLMs to manage inboxes, process attachments, and self-debug autonomously
• –Built-in webhook listening (`resend webhooks listen`) eliminates the need for third-party tunnels like ngrok
• –Native React Email support allows developers to send complex templates directly from local .tsx files via the terminal
• –Secure credential management now uses system-native keychains (macOS, Linux, Windows) instead of plain text config files
• –The "Autonomous Inbox" feature is a clever play for agents needing to sign up for services or handle verification flows