fix(ci): make mark-stable main-only and cancel stale runs

scripts/github/check-tagged-commit-on-main.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+git fetch --no-tags origin main
+
+if git merge-base --is-ancestor "${GITHUB_SHA}" "origin/main"; then
+  echo "is_on_main=true" >> "$GITHUB_OUTPUT"
+  echo "Tagged commit ${GITHUB_SHA} is contained in origin/main."
+else
+  echo "is_on_main=false" >> "$GITHUB_OUTPUT"
+  echo "Tagged commit ${GITHUB_SHA} is not contained in origin/main. Skipping stable update."
+fi

scripts/github/mark-stable-if-highest-version.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+git config user.name "github-actions[bot]"
+git config user.email "github-actions[bot]@users.noreply.github.com"
+
+echo "Ref: $GITHUB_REF"
+echo "SHA: $GITHUB_SHA"
+
+VERSION="${GITHUB_REF#refs/tags/}"
+echo "Current version tag: ${VERSION}"
+
+echo "Collecting all version tags..."
+ALL_V_TAGS="$(git tag --list 'v*' || true)"
+
+if [[ -z "${ALL_V_TAGS}" ]]; then
+  echo "No version tags found. Skipping stable update."
+  exit 0
+fi
+
+echo "All version tags:"
+echo "${ALL_V_TAGS}"
+
+LATEST_TAG="$(printf '%s\n' "${ALL_V_TAGS}" | sort -V | tail -n1)"
+
+echo "Highest version tag: ${LATEST_TAG}"
+
+if [[ "${VERSION}" != "${LATEST_TAG}" ]]; then
+  echo "Current version ${VERSION} is NOT the highest version."
+  echo "Stable tag will NOT be updated."
+  exit 0
+fi
+
+echo "Current version ${VERSION} IS the highest version."
+echo "Updating 'stable' tag..."
+
+git tag -d stable 2>/dev/null || true
+git push origin :refs/tags/stable || true
+
+git tag stable "$GITHUB_SHA"
+git push origin stable
+
+echo "Stable tag updated to ${VERSION}."

scripts/github/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