Fixes#445
- Maverick num_experts was 16 (from generic llama4 fallback), now 128
matching the model name (17B-128E)
- Maverick context_length was 4096 (bare max_position_embeddings),
now 1048576 after applying RoPE scaling factor
- MODELS.md listed both Scout/Maverick as 128k; corrected to 10M/1M
- Scraper detect_moe() now checks text_config for nested MoE fields
(Llama 4 multimodal models store num_local_experts there)
- Scraper infer_context_length() now applies rope_scaling factor when
present, so models using RoPE extension get correct context values
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>