Preserve Working Audio Before Adding Product Features

The practical ownership question in Preserve Working Audio Before Adding Product Features was simple to state and harder to prove. LOUP development repeatedly showed that audio and SIP stability have to be protected before provisioning, UI or fleet features are layered on top.

The priority order became preserve working audio/SIP, prove two-device local calls, add Wi-Fi provisioning, register against PBX, test named devices, then ramp the fleet. That sequence gives every later feature a known communications baseline and makes regressions easier to attribute.

The debugging order stayed conservative: verify wiring and state transitions first, then tune performance only after correctness had been established. Evidence marker: priority-ladder.

Feature velocity is useful only when the core product path stays measurable and recoverable. The broader result is a system that can be changed incrementally because each layer has a measurable responsibility and a known recovery path.

Project evidence

LOUP engineering marker: priority-ladder. This note records the design or debugging lesson without publishing device credentials, private keys, customer data or manufacturing secrets.