[octo-patch]

Reason: CCProxy needs a first-class MiniMax text provider with current model choices and lossless thinking/tool history. This adds the provider and makes MiniMax-M3.1-Flash the first catalog entry and the minimax alias target, followed by MiniMax-M3.

• Configure global/CN endpoints and API-key authentication through the provider plugin. The built-in catalog includes current direct-API context, output and pricing metadata. Explicit legacy/custom model IDs, model mappings and model cards remain supported.
• Keep Chat Completions on its existing transport. Route Flash/M3 Messages through the configured native Anthropic endpoint so effort settings, full assistant thinking/tool history, and image/video blocks survive unchanged. Legacy requests and existing custom OpenAI gateways retain format conversion unless a custom Anthropic endpoint is configured.
• Follow the existing native-provider annotation pattern so FastAPI correctly recognizes the decorated Messages body and dependencies. Update configuration examples and document model-specific thinking defaults and restrictions.

Validation on Python 3.11.15 with lockfile-pinned dependencies:

• 286 tests passed: python -m pytest tests/plugins/minimax tests/unit/services/adapters tests/unit/utils/test_model_mapper.py tests/unit/llms tests/unit/streaming -q --show-capture=no.
• Includes 53 MiniMax tests, with real routes and adapters captured at an offline HTTP transport boundary: both regions, aliases and saved/custom models, effort/defaults, tool continuations, thinking history, image/video payload preservation, streaming and upstream validation errors.
• Ruff 0.14.0 lint and format checks passed for ccproxy/plugins/minimax and tests/plugins/minimax; mypy 1.18.2 passed for all seven provider modules.
• The editable package build and git diff --check passed. Runtime/test dependencies were installed from the frozen lockfile export with hash verification, in a credential-free environment.

No paid inference or live MiniMax account checks were performed. Regional account/model availability and custom gateway capabilities remain upstream concerns. The full repository suite and documentation build were not run; the relevant provider, transport, mapping, formatter and streaming regressions passed.

Remote CI for head 348ab3b05b1a8433862dd74a2bb16f2cbe32ebc1: Backend CI, Python CI, Documentation and CI are all action_required; no check results are available yet. Maintainer workflow approval is required before remote validation can complete.

Contract references: Messages API, model catalog, and pricing.

[octo-patch]

I updated the MiniMax default model cards with the target context windows, per-million-token pricing, input modalities, and thinking modes, and pushed commit bc663e5. I ran the MiniMax unit tests (11 passed), Ruff checks and format checks, and targeted mypy.

[octo-patch]

Follow-up: I fixed the MiniMax model-card construction so the extra metadata passes strict type checking, and pushed commit 511cb09. I ran the 11 MiniMax unit tests, targeted Ruff checks and format checks, targeted mypy, and git diff --check.