Add current MiniMax model recipes

[octo-patch]

Reason: Add current MiniMax model recipes and regional endpoint metadata to wdoc's LiteLLM model loader.

• Register MiniMax-M3 and MiniMax-M2.7 context, pricing, cache, input modality, and thinking metadata.
• Add global and CN endpoint recipes with validation for unsupported selections.
• Cover provider catalog registration, model metadata, and every configured endpoint.

Checks:

• uv run --no-project --with 'litellm==1.84.0' --with 'pytest>=8.3.4' pytest -q tests/test_litellm_models.py
• uv run --no-project --with 'litellm>=1.84.0' --with 'pytest>=8.3.4' pytest -q tests/test_litellm_models.py
• uv run --no-project --with 'ruff==0.14.1' ruff format --check wdoc/utils/customs/litellm_models.py wdoc/wdoc.py tests/test_litellm_models.py
• uv run --no-project --with 'ruff==0.14.1' ruff check wdoc/utils/customs/litellm_models.py tests/test_litellm_models.py
• python3 -m py_compile wdoc/utils/customs/litellm_models.py wdoc/wdoc.py tests/test_litellm_models.py
• git diff --check origin/main...HEAD

[thiswillbeyourgithub]

Hi, thanks a lot for the contribution. I have a few remarks before meeting though

[octo-patch]

Thanks for the review. I renamed the helper to add_extra_litellm_models_metadata.py, generalized and guarded the registration path, documented the MiniMax source URLs, and now skip models already present in LiteLLM. I have not opened a separate LiteLLM PR; this change now defers to LiteLLM metadata whenever it exists. I ran pytest -q tests/test_litellm_models.py, Ruff formatting checks on the changed helper and tests, compileall, and a real LiteLLM registration check.

[thiswillbeyourgithub]

All good. Thanks!

[thiswillbeyourgithub]

I just did a new release. Would you mind giving it a try?