Revision #8

## Community Landing Pages

Every forum has a public landing page at `/forums/{slug}/about` that serves as a welcome mat for new visitors.

### What the Landing Page Shows

- **Hero banner** — cover image or brand-color gradient with the forum icon, name, and description
- **Stats** — member count, topic count, reply count
- **About section** — the forum's long-form description
- **Recent activity** — the 5 most recent threads with author avatars
- **Community rules** — if the forum has rules configured
- **Top contributors** — the most active members as an avatar grid
- **Creator** — who created the forum, with their bio and verified badge
- **Join CTA** — "Enter Community" for members, "Sign in to join" for guests

### Access Types

Landing pages display a badge indicating the access level:

- **Public** — anyone can view and post
- **Private** — membership by invitation only
- **Boosters Exclusive** — only active server boosters can access
- **Premium** — paid subscription required (shows price and subscribe button)