Slots above gemini-3.7-flash (kept) in OPENROUTER_MODELS and
_PROVIDER_MODELS["nous"]; openrouter plugin fallback_models bumped
3.7 -> 3.8; model-catalog.json regenerated.
Verified live with test completions on both Nous Portal and OpenRouter
(model echo + billed). Same 1,048,576 window / 65,536 output / pricing
as 3.7-flash, so provider-agnostic metadata resolves via the existing
gemini entries and both routes bill live (official_models_api) — no
pricing snapshot needed.
Scoped to the two named providers: vertex/gemini/kilocode/gmi curated
lists, setup.py samples, and aux defaults untouched.