Retire hosted demo/API (2026-09-27); link the Stratus Labs research page

Nocturne v1.2 teacher — first in the family to beat v1 (core calibrated macro-F1 0.1511 vs 0.1488, mAP 0.1541 vs 0.1498). Multi-hot targets + val-mAP selection; epoch 18/40.

initial commit