Point links at git.coffeylabs.org after the move from GitHub

GitHub took the organization's repos and GHCR offline on 2026-09-20. Repo,
release, raw-file and clone links now go to Gitea at git.coffeylabs.org,
container images to registry.coffeylabs.org, and GitLab-style /-/blob paths
to Gitea's /src/branch form. Go module paths are identifiers and stay as
they are; links to GitHub issues and pull requests are left as history.

src/App.tsx

@@ -27,7 +27,7 @@ import './App.css'
  * AGPL section 13: anyone playing this over a network is entitled to the
  * source of the version they are playing, so the offer sits on every screen.
  */
-const SOURCE_URL = 'https://github.com/jcoffey-dev/long-range-scan'
+const SOURCE_URL = 'https://git.coffeylabs.org/jcoffey-dev/long-range-scan'
 
 /**
  * The way back out.

src/game/highscores.ts

@@ -5,7 +5,7 @@
  * before putting it on screen.
  *
  * The service is shared with the other games on the site rather than being one
- * of ours -- see https://github.com/jcoffey-dev/games-scores. That is why
+ * of ours -- see https://git.coffeylabs.org/jcoffey-dev/games-scores. That is why
  * every call names the game. Nothing else about it leaks in here: the rows
  * come back in this game's own field names, so this file would be identical if
  * the board were ours alone.