ci(gitflow): enforce branch and PR governance checks

.gitea/scripts/check-branch-name.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env sh
+set -eu
+
+branch="${1:-}"
+
+if [ -z "$branch" ]; then
+  echo "Missing branch name."
+  exit 1
+fi
+
+case "$branch" in
+  dev|staging|main)
+    echo "Long-lived branch detected: $branch"
+    exit 0
+    ;;
+esac
+
+if printf "%s" "$branch" | grep -Eq '^(todo|refactor|code)\/[a-z0-9]+([._-][a-z0-9]+)*$'; then
+  echo "Branch naming valid: $branch"
+  exit 0
+fi
+
+echo "Invalid branch name: $branch"
+echo "Expected: todo/<slug> | refactor/<slug> | code/<slug>"
+exit 1