v1.7.1

Small polish release

• replaced the "PKCS#1 padding" failure spam with a single, tidy recap at the end.
• made config.ini way more forgiving by supporting inline comments (key = value ; note) and actually respecting off / disable.
• noticeably trimmed memory footprint on big clients through in-place decryption.
• fixed an edge case where an extracted file could theoretically land outside the destination directory.
• did some general under-the-hood cleanup.