LLMs on Consumer Hardware — Part 8: The QA Problem — Why 'It Ran' Isn't 'It Works'

The eighth entry in a build-log series on local LLMs. The team could build and adapt, but telling whether what it built actually worked was its weakest link. Verifying that something loads is not verifying that it works — and testing the right thing turned out to be a method problem, not a model-size one.