Webapp v12.4.0

This release lets you edit Tlonbot’s system prompts and manage its scheduled tasks from its profile screen, and adds a mute icon to muted channels and groups. Fixes address deleted Buckets files leaving their stored objects behind, non-hosts being unable to leave Notebook channels, and nested task list indentation in Notebooks.

Hash: 0va.8pp6r.f6e2o.hcpr9.89gsg.e33gi.pnt4k.50u1u.765fg.nsqgn.ronch

• Adds support for editing Tlonbot's system prompts from its profile screen. Changes apply after a gateway restart.
• Adds support for adding, editing, and deleting Tlonbot's scheduled tasks from its profile screen and the app's Settings menu. Changes apply as soon as the task is saved.
• Adds a mute-bell icon to muted channels and groups, even if there are no unread messages.
• Fixes an issue where deleting files from Bucket channel failed to delete the stored object.
• Fixes an issue where non-hosts were unable to leave Notebook channels.
• Fixes an issue where nested task list items did not properly indent in Notebook channels.