Set MineGeo community forum URL

docs/forum.md

@@ -1,20 +1,20 @@
 # MineGeo community forum
 
-Live forum: https://minegeo.discourse.group/
+Live forum: https://forum.minegeo.site/
 
-Created on 12 October 2026 under Pavel's Discourse account. The public forum
-has Announcements, Maps & creations, Looking for players, and Help & feedback
-categories, plus Discourse's default General, Site Feedback, and private Staff
-categories. The pinned welcome and three conversation starters are published.
+The community runs on Flarum. Its public categories are General, Announcements,
+Maps & Creations, Looking for Players, Tournaments, and Help & Feedback. The
+pinned welcome and three conversation starters are published. English and
+Russian are welcome.
 
-The community forum uses Discourse's Free hosted plan. Players sign in with
-Discourse ID; MineGeo account credentials and permissions are not shared with it.
-Forum staff permissions are managed separately in Discourse.
+Forum accounts and moderation are managed by the forum itself. MineGeo account
+credentials and permissions are not shared with it.
 
-The public destination is stored in `shared/forum.json`. Both the header and
-footer use it. An optional `MINEGEO_FORUM_URL` environment variable overrides it;
-an empty or invalid value hides the links. Only HTTPS URLs without credentials
-or custom ports are accepted. No forum API key is needed for these links.
+The public destination is stored in `shared/forum.json`. Both the site header
+and footer use it. An optional `MINEGEO_FORUM_URL` environment variable can
+override it; an empty or invalid value hides the links. Only HTTPS URLs without
+credentials or custom ports are accepted. No forum API key is needed for these
+links.
 
 ## Starter welcome topic
 
@@ -23,8 +23,9 @@ Welcome to MineGeo! :D
 Play at https://minegeo.site and find the player guide at
 https://minegeo.site/docs.
 
-This is our place to share maps, find people to play with, ask for help, and
-suggest what MineGeo should do next. English and Russian are welcome.
+This is our place to share maps, find people to play with, discuss tournaments,
+ask for help, and suggest what MineGeo should do next. English and Russian are
+welcome.
 
 - Be kind. No harassment, spam, or sharing someone's private information.
 - Share maps and screenshots you have permission to share. Credit creators.
@@ -38,6 +39,7 @@ suggest what MineGeo should do next. English and Russian are welcome.
 - **Announcements** — MineGeo news and updates.
 - **Maps & creations** — Show your worlds and share playable map links.
 - **Looking for players** — Share party links and find your next teammates.
+- **Tournaments** — Discuss MineGeo tournaments, schedules, rules, and results.
 - **Help & feedback** — Ask questions and suggest improvements.
 
 ## Conversation starters