fix: Add database persistence and health check scripts

- Add apply-migrations.sh for automatic migration application
- Add ensure-db-persistence.sh for database integrity checks
- Add db-health-check.sh for periodic health monitoring
- Improve PostgreSQL configuration in docker-compose.db.yml
- Add proper shutdown settings to prevent data loss

scripts/ensure-db-persistence.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+# Ensure database persistence and apply migrations
+# Run this script periodically or on container startup
+
+set -e
+
+echo "🔍 Checking database persistence..."
+
+# Check if database exists
+if docker exec daarion-postgres psql -U postgres -lqt | cut -d \| -f 1 | grep -qw daarion; then
+  echo "✅ Database 'daarion' exists"
+else
+  echo "⚠️  Database 'daarion' does not exist, creating..."
+  docker exec daarion-postgres psql -U postgres -c "CREATE DATABASE daarion;"
+fi
+
+# Check if volume has data
+VOLUME_SIZE=$(du -sh /var/lib/docker/volumes/daarion_pgdata/_data/ 2>/dev/null | awk '{print $1}' || echo "0")
+echo "📦 Volume size: $VOLUME_SIZE"
+
+# Check if migrations are applied
+TABLE_COUNT=$(docker exec daarion-postgres psql -U postgres -d daarion -t -c "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema = 'public';" 2>/dev/null | tr -d ' ' || echo "0")
+echo "📊 Tables in database: $TABLE_COUNT"
+
+if [ "$TABLE_COUNT" -lt 10 ]; then
+  echo "⚠️  Database seems empty or incomplete, applying migrations..."
+  cd /opt/microdao-daarion
+  for f in migrations/*.sql; do
+    echo "  Applying $(basename $f)..."
+    docker exec -i daarion-postgres psql -U postgres -d daarion < "$f" 2>&1 | grep -E 'ERROR|ALTER|CREATE|INSERT|UPDATE|COMMENT' | tail -1 || true
+  done
+  echo "✅ Migrations applied"
+else
+  echo "✅ Database has tables, checking for missing columns..."
+  
+  # Check for missing banner_url column
+  if ! docker exec daarion-postgres psql -U postgres -d daarion -t -c "SELECT 1 FROM information_schema.columns WHERE table_name = 'microdaos' AND column_name = 'banner_url';" 2>/dev/null | grep -q 1; then
+    echo "⚠️  Missing banner_url column, adding..."
+    docker exec daarion-postgres psql -U postgres -d daarion -c "ALTER TABLE microdaos ADD COLUMN IF NOT EXISTS banner_url TEXT;"
+  fi
+  
+  # Check for missing logo_url column
+  if ! docker exec daarion-postgres psql -U postgres -d daarion -t -c "SELECT 1 FROM information_schema.columns WHERE table_name = 'microdaos' AND column_name = 'logo_url';" 2>/dev/null | grep -q 1; then
+    echo "⚠️  Missing logo_url column, adding..."
+    docker exec daarion-postgres psql -U postgres -d daarion -c "ALTER TABLE microdaos ADD COLUMN IF NOT EXISTS logo_url TEXT;"
+  fi
+fi
+
+echo "✅ Database persistence check complete"
+