Suggestion Configurable "Enter" key behavior

[club-home]

Hi! And one more feature request, please: Configurable "Enter" key behavior (admin default + per-user setting)

Currently, messages are sent by pressing Enter. This is a sensible chat-style default, but it doesn't fit everyone: users who write longer, multi-line messages (common for business discussions) often hit Enter for a new line and accidentally send an unfinished message.

I'd like to suggest making this configurable on two levels:

1. Admin option (global default): an ACP setting to choose the board-wide default — "Enter sends message" vs. "Enter adds new line (Shift+Enter sends)".
2. User preference: an option in the user's account/alert preferences to override the admin default, so each member can pick the behavior they prefer — like in Telegram Desktop or Discord, which both offer this toggle.

This would be especially helpful on desktop, where multi-line messages are more common, while mobile users typically expect Enter to send. Both audiences would be covered with a single pair of settings.

Thanks for the great add-on — i do hope the messenger will be is a core part of direct messages experience, and this flexibility would make it fit both quick-chat and long-form use cases.