[Lacikika]

Implement Migration 067: Municipal Water Utility & Fire Hydrant Pressure Simulation.

Features added:

• Migration 067 SQL schemas across core, services, properties, and treasury resources.
• Pure deterministic Lua math for hydrant PSI, contamination diffusion, chemical purification, and water consumption.
• Authoritative server state management, power grid blackout dependencies, contamination dosing, and fire tender drafting.
• Client spatial interaction targets via nyx_interact and UI hooks via nyx_ui.
• Comprehensive unit tests in tests/test_municipal_water_utility_and_hydrant_pressure.py.

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PR created automatically by Jules for task 17338220575283469558 started by @Lacikika

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