pi-neuralwatt: v0.19.3

Patch Changes

• 1f5106f: Sync the offline fallback model table with the live Neuralwatt API: remove the retired Kimi K3 models (kimi-k3, kimi-k3-fast, kimi-k3-flex) and update the nw-large tracking alias to its new target, Kimi K3.1 Pro (lower pricing and the K3.1 Pro effort contract including medium).