The '3-Character' Catchphrase That the Quality Gate Allowed Became the Model's Habit

A few hallucinations mixed into the training corpus became ingrained as a catchphrase in the voice model. Even after tightening the insertion allowance from 3 to 1 to 0, the phrase persisted. Scanning the raw waveforms revealed that all four instances had an insertion allowance of 0. It's a reminder that thresholds only affect what you can observe.