refactor(ci): organize workflow scripts and gate publish on main

scripts/github/mark-stable/wait-for-main-ci-success.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SHA="${GITHUB_SHA}"
+API_URL="https://api.github.com/repos/${GITHUB_REPOSITORY}/actions/workflows/ci.yml/runs?head_sha=${SHA}&event=push&per_page=20"
+WAIT_INTERVAL_SECONDS=20
+MAX_ATTEMPTS=990 # 5 hours 30 minutes max wait
+
+STATUS=""
+CONCLUSION=""
+
+echo "Waiting for CI on main for ${SHA} (up to 5 hours 30 minutes)..."
+for attempt in $(seq 1 "${MAX_ATTEMPTS}"); do
+  RESPONSE="$(curl -fsSL \
+    -H "Authorization: Bearer ${GH_TOKEN}" \
+    -H "Accept: application/vnd.github+json" \
+    "${API_URL}")"
+
+  STATUS="$(printf '%s' "${RESPONSE}" | jq -r '.workflow_runs[] | select(.head_branch=="main") | .status' | head -n1)"
+  CONCLUSION="$(printf '%s' "${RESPONSE}" | jq -r '.workflow_runs[] | select(.head_branch=="main") | .conclusion' | head -n1)"
+
+  if [[ -n "${STATUS}" ]]; then
+    echo "CI status=${STATUS} conclusion=${CONCLUSION:-none} (attempt ${attempt}/${MAX_ATTEMPTS})"
+  else
+    echo "No CI run for main found yet (attempt ${attempt}/${MAX_ATTEMPTS})"
+  fi
+
+  if [[ "${STATUS}" == "completed" ]]; then
+    if [[ "${CONCLUSION}" == "success" ]]; then
+      echo "CI succeeded for ${SHA}."
+      break
+    fi
+    echo "CI failed for ${SHA} (conclusion=${CONCLUSION})."
+    exit 1
+  fi
+
+  sleep "${WAIT_INTERVAL_SECONDS}"
+done
+
+if [[ "${STATUS}" != "completed" || "${CONCLUSION}" != "success" ]]; then
+  echo "Timed out waiting for successful CI on main for ${SHA}."
+  exit 1
+fi