Fix: Escape backslashes first before single quotes

Author: rollybueno

src/Config_Command.php

@@ -1240,8 +1240,9 @@ private function escape_config_value( $key, $value ) {
 		}
 
 		if ( is_string( $value ) ) {
-			// For single-quoted strings, only escape single quotes; double quotes don't need escaping
-			return str_replace( "'", "\\'", $value );
+			$value = str_replace( '\\', '\\\\', $value );  // Escape backslashes first
+			$value = str_replace( "'", "\\'", $value );    // Then escape single quotes
+			return $value;
 		}
 
 		return $value;