p150 ETH-dispatch compliance (2026-10-05): default ETH dispatch, 1 CQ, 12x10 in Python API and server; numbers re-measured

Python API (2026-10-04): pip install -e code/, from_pretrained() + model(...), Python-first quickstart

Optimized build (2026-10-03): model call 19.0 ms, trace 17.7 ms

Add Tenstorrent Blackhole tt-nn port