ci(gitflow): enforce branch and PR governance checks

.gitea/scripts/configure-branch-protection.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env sh
+set -eu
+
+if [ "${#}" -ne 4 ]; then
+  echo "Usage: $0 <base-url> <owner> <repo> <token>"
+  exit 1
+fi
+
+base_url="$1"
+owner="$2"
+repo="$3"
+token="$4"
+
+protect_branch() {
+  branch="$1"
+
+  curl -sS -X POST \
+    "${base_url}/api/v1/repos/${owner}/${repo}/branch_protections" \
+    -H "Authorization: token ${token}" \
+    -H "Content-Type: application/json" \
+    -d "{
+      \"branch_name\": \"${branch}\",
+      \"enable_push\": false,
+      \"enable_push_whitelist\": false,
+      \"enable_merge_whitelist\": false,
+      \"enable_status_check\": true,
+      \"status_check_contexts\": [\"Governance Checks\", \"Lint Typecheck Unit E2E\"]
+    }" >/dev/null
+}
+
+protect_branch "main"
+protect_branch "staging"
+
+echo "Branch protection applied for main and staging."