The tuned values (pitch 0, rate 15, head size 34, lowering 50) matched the reference metrics better but sound far off the game voice, so restore the published NetTTS approximation: pitch 3, rate 17, prominences 22, head size 52, lowering 40, volume 70. Also revert the test expectations, the published default metadata, and the tuning notes in the docs; keep tools/vox_compare.py for future experiments.