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Phase 1 Scope

In Scope

Read-only UDP integration for NST devices
Config entry + options flow
Protocol implementation for commands 1,2,3,4,7,8
Split polling coordinator (fast and slow refresh paths)
Entity model for read-only metadata, grouped volume/mute, and preset state visibility
Diagnostics support
Manual test plan for real hardware validation

Out of Scope

Preset recall (1001)
Group volume set (1002)
Group mute set (1003)
Writable entities (select, number, switch)
Custom write services
Metering, matrix control, and other DSP setup features

Deferred to Phase 2

Write command support with ACK handling behavior
Writable entities and services
Optimistic state handling after successful write ACK