feat: Payload CMS robustness - auto-detect migrations, deep health check, improved error messages

- cms-sync.sh: auto-detect migrations from src/migrations/*.ts (no manual list)
- cms-sync.sh: pre-flight container checks with actionable error messages
- api/health/cms: deep health check that queries all Payload collections
- deploy.yml: auto-detect migrations in sanitization step
- deploy.yml: CMS deep health smoke test in post-deploy

scripts/cms-sync.sh

@@ -53,13 +53,17 @@ TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
 REMOTE_DB_USER=""
 REMOTE_DB_NAME=""
 
-# Migration names to insert after restore (keeps Payload from prompting)
-MIGRATIONS=(
-  "20260223_195005_products_collection:1"
-  "20260223_195151_remove_sku_unique:2"
-  "20260225_003500_add_pages_collection:3"
-  "20260225_175000_native_localization:4"
-)
+# Auto-detect migrations from src/migrations/*.ts (no manual maintenance needed)
+MIGRATIONS=()
+BATCH=1
+for migration_file in $(ls src/migrations/*.ts 2>/dev/null | sort); do
+  name=$(basename "$migration_file" .ts)
+  MIGRATIONS+=("$name:$BATCH")
+  ((BATCH++))
+done
+if [ ${#MIGRATIONS[@]} -eq 0 ]; then
+  echo "⚠️  No migration files found in src/migrations/"
+fi
 
 # ── Resolve target environment ─────────────────────────────────────────────
 resolve_target() {
@@ -159,6 +163,29 @@ backup_remote_db() {
   REMOTE_BACKUP_FILE="$file"
 }
 
+# ── Pre-flight: Verify remote containers exist ─────────────────────────────
+check_remote_containers() {
+  echo "🔍 Checking $TARGET containers..."
+  local missing=0
+  if ! ssh "$SSH_HOST" "docker ps -q -f name=$REMOTE_DB_CONTAINER" | grep -q .; then
+    echo "❌ Database container '$REMOTE_DB_CONTAINER' not found on $SSH_HOST"
+    echo "   → Deploy $TARGET first: git push to trigger pipeline, or run:"
+    echo "     ssh $SSH_HOST \"cd $REMOTE_SITE_DIR && docker compose -p $REMOTE_PROJECT --env-file .env.\$TARGET up -d\""
+    missing=1
+  fi
+  if ! ssh "$SSH_HOST" "docker ps -q -f name=$REMOTE_APP_CONTAINER" | grep -q .; then
+    echo "❌ App container '$REMOTE_APP_CONTAINER' not found on $SSH_HOST"
+    missing=1
+  fi
+  if [ $missing -eq 1 ]; then
+    echo ""
+    echo "💡 The $TARGET environment hasn't been deployed yet."
+    echo "   Push to the '$TARGET' branch or run the pipeline first."
+    exit 1
+  fi
+  echo "✅ All $TARGET containers running."
+}
+
 # ── PUSH: local → remote ──────────────────────────────────────────────────
 do_push() {
   echo ""
@@ -172,8 +199,9 @@ do_push() {
   echo ""
   [[ ! $REPLY =~ ^[Yy]$ ]] && { echo "Cancelled."; exit 0; }
 
-  # 0. Ensure local DB is running
+  # 0. Ensure local DB is running & remote containers exist
   ensure_local_db
+  check_remote_containers
 
   # 1. Safety backup of remote
   backup_remote_db
@@ -227,8 +255,9 @@ do_pull() {
   echo ""
   [[ ! $REPLY =~ ^[Yy]$ ]] && { echo "Cancelled."; exit 0; }
 
-  # 0. Ensure local DB is running
+  # 0. Ensure local DB is running & remote containers exist
   ensure_local_db
+  check_remote_containers
 
   # 1. Safety backup of local
   backup_local_db