[octo-patch]

Reason: The marketplace lacks a MiniMax provider skill, and the initial guide in this PR recommended older model defaults. This adds a registered MiniMax skill with MiniMax-M3.1-Flash as the ordinary default and MiniMax-M3 as the second active choice, while preserving explicitly saved, custom, and legacy model IDs.

Changes

• Add the MiniMax skill to the marketplace, root catalog, and isolated plugin distribution.
• Document direct API context, multimodal input, Flash output capacity, current pricing, and protocol-specific thinking defaults and effort fields.
• Preserve existing region and protocol choices, including working Chat Completions and Anthropic Messages integrations. Document native Responses on the verified global endpoint without claiming China Responses availability.
• Preserve legacy selections such as MiniMax-M2.7 and full tool, reasoning, and multimodal history.
• Keep unrelated skills, media features, and non-MiniMax registry entries unchanged.

Validation

• python3 scripts/build_plugins.py and python3 scripts/build_plugins.py --dry-run passed during the update.
• Final MiniMax artifacts regenerated using the existing build_plugin function. Verified byte-for-byte source/distribution parity across all 57 plugins and the marketplace fields required by .github/workflows/main.yaml.
• MiniMax registry source, skills, category, generated README/SKILL parity, and git diff --check passed.
• Verified the rollout changes only six MiniMax/catalog files relative to the original PR head; all other registry entries are identical.
• Read current official model, Chat Completions, Messages, Responses, and pricing documentation to check the guide.

Limitations

This MiniMax plugin consists of two Markdown files; it has no SDK client or HTTP request builder. SDK/HTTP boundary tests are not applicable, and documentation assertions are not presented as transport tests. No paid inference, account-entitlement check, dependency installation, or interactive agent installation was performed. The documented npx skills add workflow was not run because auto-install wrappers are disallowed in this environment.

GitHub CI reported action_required after the update and produced no completed checks. The local structure/parity validation passed; remote validation remains pending maintainer authorization.