CI: the release badge follows a tag, not only a push to main

After v0.11.0 was published the badge still said v0.10.0 until the next
push to main. Tag runs run the tests and coverage already; they now
publish the badges too.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT

.gitea/workflows/ci.yml

@@ -59,9 +59,10 @@ jobs:
         if: github.event_name == 'pull_request' || github.ref_type == 'tag'
         run: scripts/ci.sh builds
 
-      # The README's badges are files on a branch of their own, replaced at each push to main.
+      # The README's badges are files on a branch of their own, replaced at each push to main and
+      # at each tag (the release badge says which tag is the latest)
       - name: Publish the badges
-        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+        if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref_type == 'tag')
         env:
           GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
         run: |