PS2 MEMORY CARD TOOLKIT v1.4.0 — Python Edition
Created by shadow501

NEW:
- About dialog with prominent “Created by shadow501” attribution and version.
- Help > Program Information: features, PCSX2 and Python requirements.
- Help > Memory Card Information: card image size, ECC, free space, saves,
  selected-save file details, and unsaved-changes status.
- Help > About PS2 Memory Card Toolkit plus About / Info header shortcut.
- Supported formats and keyboard shortcuts shown in Information.

CARRIED OVER FROM v1.3.0:
- PCSX2 .ps2 file open / inspect; safe Save Card As.
- CBS, PSU, MAX, SPS, XPS import, PS2 save copy/paste.
- PSU export, delete, duplicate confirmation, checksum and readback validation.
- P2G signature-only recognition; no distinct native P2G decoder.

RUN: Launch_Toolkit.bat on Windows with Python 3.10+
TEST: python test_engine.py / python test_formats.py / python test_gui.py
BUILD EXE on Windows: Build_Windows_EXE.bat
