Connect Godot to Rust Modbus data

[bondlegend4]

Global ID: VICS-INTEG-001

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Estimated Time: 4-5 days

Problem

Need Godot to read simulation state from Rust Modbus server for SCADA display.

Solution Tasks

• Create Modbus client in GDScript
• Poll Rust server for state
• Parse Modbus register data
• Map to SCADA display elements
• Handle connection failures
• Implement retry logic
• Add performance monitoring
• Document data flow

Acceptance Criteria

• Modbus reads complete in < 50ms
• Data parsing correct
• Connection failures handled
• Retry logic works
• Performance acceptable
• Documentation complete