Enable tab completion for custom directory input

Use read -e to enable readline support, providing tab completion and line editing when entering custom deployment paths. Also expand tilde to home directory.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

deploy.sh

@@ -22,11 +22,13 @@ case $choice in
         ;;
     3)
         DEPLOY_MODE="custom"
-        read -p "Enter deployment directory (required): " DEPLOY_DIR
+        read -e -p "Enter deployment directory (required): " DEPLOY_DIR
         if [ -z "$DEPLOY_DIR" ]; then
             echo "Error: Directory path is required"
             exit 1
         fi
+        # Expand tilde to home directory
+        DEPLOY_DIR="${DEPLOY_DIR/#\~/$HOME}"
         ;;
     *)
         echo "Error: Invalid choice"