Chatto

Chatto 0.2.0 improves Markdown composition, notification counts, DM room tools, room navigation, authentication defaults, email delivery, and Docker self-hosting.

Highlights

• Markdown Composer Preview: Compose and edit messages with a rich Markdown preview for links, inline code, fenced code blocks, language selection, and syntax highlighting.
• Notification Counts: Room and server notification dots now show counts.
• DM Room Sidebar: Direct messages now support the room sidebar for files, without DM moderation actions.
• Fixed an issue where active call badges were not shown consistently for direct-message rooms.

Sign-In and Setup

• Email OTP Guardrails: Operators can configure email verification code TTLs, delivery throttling, wrong-code limits, and whether throttling is enabled.
• Fixed an issue where CSRF state depended on stored session data, improving multi-replica compatibility.
• Fixed an issue where SMTP providers requiring implicit TLS on port 465 were not supported cleanly.

Chat and Realtime Reliability

• Fixed an issue where opening a notification from another server could reuse stale room state.
• Fixed an issue where newly created rooms and room layout changes did not always refresh immediately in the same tab.
• Fixed an issue where normal server shutdown logged redundant lifecycle messages.

Upgrade Notes ⚠️

• Docker Runtime Layout: Self-hosted Docker deployments should mount configuration at /config/chatto.toml and data at /data; older /home/chatto-style mounts need to be updated before upgrading.

API Changes

• Notification count support adds Room.viewerNotifications and Server.viewerNotifications. Existing notification fields remain available.

0.2.0 (2026-06-17)

⚠ BREAKING CHANGES

• docker: use config and data root paths (#903)

Features

• add notification badge counts (#909) (f25a69d)
• auth: configure email OTP throttling (#902) (8c2d202)
• frontend: preview Markdown in composer (#876) (06afedb)
• show room sidebar in DMs (#912) (32222fa)

Bug Fixes

• auth: make CSRF tokens stateless (#900) (a2da80c)
• ci: checkout docs image PR refs (#906) (a2af9a2)
• docker: use config and data root paths (#903) (c90f0d9)
• frontend: remount room on notification switch (#908) (fcba838)
• frontend: show active call badges for DMs (#899) (a7299e1)
• refresh room layout state after room creation (#907) (7cd94d2)
• support implicit SMTP TLS (#905) (d7d83b1)
• tidy server lifecycle logs (#914) (2b95bf4)