PLC Ladder Studio v4.54

- Ladder-HMI I/O shared-state fix for RUN after project load.
- marker_states/output_states dict identity preserved during simulation scans.
- Project load rebinds HMI/runtime/communication to the same I/O dictionaries.
- HMI live runtime runs during RUN without requiring internal loop.
- HMI I/Q addresses normalized after project load.
- Linux launcher icon and install_launcher.sh added.
