Replaces moonshotai/kimi-k2.6 (recommended) and moonshotai/kimi-k2.7-code
with moonshotai/kimi-k3 in both curated lists, regenerates the published
model-catalog.json manifest, and updates the docs example manifest (en+zh).
kimi-k3 verified live on both endpoints (Nous Portal /v1/models and
OpenRouter /api/v1/models; 1M context, $3/$15 per Mtok). Family-prefix
matching already covers k3 in moonshot_schema, cache policy, and context
heuristics — no code changes needed there.