refactor and compress code

scripts/bash/backup-merge.sh

@@ -6,18 +6,14 @@ set -euo pipefail
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 cd "$SCRIPT_DIR"
 
-COLOR_RED='\033[0;31m'
-COLOR_GREEN='\033[0;32m'
-COLOR_YELLOW='\033[1;33m'
-COLOR_BLUE='\033[0;34m'
-COLOR_CYAN='\033[0;36m'
-COLOR_RESET='\033[0m'
+# Source common library for standardized logging
+if ! source "$SCRIPT_DIR/lib/common.sh" 2>/dev/null; then
+  echo "❌ FATAL: Cannot load $SCRIPT_DIR/lib/common.sh" >&2
+  exit 1
+fi
 
-log(){ printf '%b\n' "${COLOR_GREEN}$*${COLOR_RESET}"; }
-info(){ printf '%b\n' "${COLOR_CYAN}$*${COLOR_RESET}"; }
-warn(){ printf '%b\n' "${COLOR_YELLOW}$*${COLOR_RESET}"; }
-err(){ printf '%b\n' "${COLOR_RED}$*${COLOR_RESET}"; }
-fatal(){ err "$*"; exit 1; }
+# Use log() instead of info() for main output to maintain existing behavior
+log() { ok "$*"; }
 
 MYSQL_PW=""
 BACKUP_DIR=""