Fix deploy dry-run flag and generalize env example

scripts/.deploy.env.example

@@ -1,9 +1,9 @@
 # Copy this file to scripts/.deploy.env and fill in your values.
-DEPLOY_HOST="root@example.com"
-DEPLOY_TARGET="/home/user/web/xmrpay.link/public_html"
+DEPLOY_HOST="USER@HOST"
+DEPLOY_TARGET="/home/USER/web/xmrpay.link/public_html"
 
 # Optional hardening settings:
 # DEPLOY_BACKUP_ENABLE="1"
 # DEPLOY_BACKUP_KEEP="14"
-# DEPLOY_BACKUP_DIR="/home/user/web/xmrpay.link/backups/xmrpay-data"
+# DEPLOY_BACKUP_DIR="/home/USER/web/xmrpay.link/backups/xmrpay-data"
 # DEPLOY_DRY_RUN="0"

scripts/deploy.sh

@@ -68,14 +68,14 @@ else
   echo "Skipping pre-deploy backup (DEPLOY_BACKUP_ENABLE=0)."
 fi
 
-RSYNC_DRY_RUN=()
+RSYNC_DRY_RUN=""
 if [[ "$DRY_RUN" == "1" ]]; then
-  RSYNC_DRY_RUN+=("--dry-run")
+  RSYNC_DRY_RUN="--dry-run"
   echo "Running in dry-run mode (DEPLOY_DRY_RUN=1)."
 fi
 
 rsync -avz --delete \
-  "${RSYNC_DRY_RUN[@]}" \
+  ${RSYNC_DRY_RUN} \
   --exclude '.git' \
   --exclude 'node_modules' \
   --exclude 'data/' \