v4.18.0

## Changelog

- Captain assignment, scenario and tool controls, and improved playground testing. [Enterprise]
- Guided WhatsApp setup and clearer account health.
- WhatsApp campaigns and calls for BSUID-only contacts.
- Per-inbox call recording and transcription settings. [Enterprise]
- Additional conditions for delayed automations.
- Alerts-only mode for Slack.
- Conversation history navigation and sorting in filtered views.
- Improved Help Center media uploads and previews.
- Message deletion audits, IP masking, and location details. [Enterprise]
- SMTP configuration independent of IMAP.
- Inbox identity verification secret rotation.
- Security hardening for sign-in, macros, webhooks, media, and HTML rendering.
- Enabled Estonian translations in the chat widget.
- Numerous bug fixes and performance improvements.

Thanks to @AdarshJ173, @AdityaAudi, @AfricanMake, @ajuijas, @augustocbx, @breken-ai, @chinatsu1124, @concept254, @coolbirdzik, @Gurjit-30, @hahuma, @izcoser, @jaroenchai-t, @linbaublys, @lucas-langa, @marcoazcabral, @mazenkhalil, @oAllanNascimento, @pedrolis, @qsebas, @radaloshara, @salmonumbrella, @tejush1998, @vaibhav8a, @williambsm9 for the contributions.

> We recommend upgrading to v4.18.0 for the latest security fixes and hardening improvements.