Super Admin: Community ↔ Classic Layout Toggle

Flip any forum between the group-style community presentation and the classic thread-list layout without losing any data.

Where: /admin/forums/{id}/edit

How to use:

1. Open Admin → Forums and click Edit on any forum.
2. Scroll to the Community-style presentation row (the highlighted panel).
3. Toggle the checkbox on or off.
4. Click Save Changes.

What switching does:

• Checked (community mode): the forum shows the cover banner, icon, member tabs, and rules tab at the top. Uses is_community = 1.
• Unchecked (classic mode): the forum reverts to the traditional thread-list layout with the page-header style. Cover, icon, member count, and Rules tab are hidden from the public view.

What does NOT change:

• Uploaded cover and icon files remain on disk and in the database.
• Brand color remains set.
• Membership rows (invited / requested / member) remain intact.
• Visibility (public / listed_private / hidden) is independent and unchanged.
• Forum rules (rules column) remain stored and are reachable at /forums/{slug}/rules even when community mode is off (the Rules tab just isn't in the header nav).

Reverting: re-check the box and save. The community header reappears with every detail exactly as it was.

Authority: the checkbox only renders in the admin form when the acting user has role >= 5 (super admin). Regular admins don't see it and the field is preserved untouched on save. For non-admins, the toggle lives at /forums/{slug}/settings (moderator-level).

Audit: the change is captured by the generic forum.updated audit entry on save.