feat(providers): refresh MiniMax model and endpoint coverage

[octo-patch]

Supersedes #611 with a clean history based on the latest main branch.

Summary

• Add MiniMax-M2.7 to the global and China provider model catalogs.
• Record the current context, reasoning, tool-use, and input modality metadata for MiniMax-M3 and MiniMax-M2.7.
• Enable image input for MiniMax-M3 and inline thinking parsing for M2.x models on OpenAI-compatible profiles.
• Document the global and China Anthropic-compatible presets and OpenAI-compatible profile configuration.
• Verify the final request URLs for both regions and both compatible protocols.

Verification

• go fmt ./...
• go test -p 1 ./...
• make build-all
• go vet ./...
• make lint
• go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.12.2 run --enable-only unused,ineffassign,staticcheck --new-from-rev=origin/main ./...
• go run golang.org/x/vuln/cmd/govulncheck@v1.3.0 ./...

Summary by CodeRabbit

• New Features

  • Added support for MiniMax M3 image input.
  • Expanded MiniMax model listings with current capabilities, including context limits, reasoning, tool calling, and supported modalities.
  • Added support for MiniMax M2 and M2.7 thinking output and compatible streaming endpoints.
  • Improved handling for global and China-region MiniMax configurations.

• Documentation

  • Added setup instructions for MiniMax API keys, presets, and OpenAI-compatible custom profiles.
  • Documented region-specific base URLs and API key configuration.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

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Run ID: b316b51a-645f-4a3e-9d40-b61589ba4902

📥 Commits

Reviewing files that changed from the base of the PR and between 5a5b7fd and f4ad7df.

📒 Files selected for processing (7)

• README.md
• internal/modelregistry/vision.go
• internal/modelregistry/vision_name_test.go
• internal/providermodelcatalog/catalog.go
• internal/providermodelcatalog/catalog_test.go
• internal/providers/factory.go
• internal/providers/factory_test.go

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Walkthrough

MiniMax setup documentation now covers API keys, presets, regional custom profiles, and base URLs. MiniMax catalog metadata, provider routing, think-tag parsing, and MiniMax M3 vision fallback behavior are updated with corresponding tests.

Changes

MiniMax support

Layer / File(s)	Summary
MiniMax setup instructions README.md	Documents MiniMax API key variables, global and China presets, and OpenAI-compatible custom profiles with regional URLs.
MiniMax catalog capabilities internal/providermodelcatalog/catalog.go, internal/providermodelcatalog/catalog_test.go	Adds detailed capabilities for MiniMax M3 and M2.7, updates provider model expectations, and verifies catalog results do not alias mutable state.
Provider routing and think tags internal/providers/factory.go, internal/providers/factory_test.go	Enables think-tag handling for MiniMax M2 models and tests global and China-compatible streaming endpoints.
MiniMax M3 vision fallback internal/modelregistry/vision.go, internal/modelregistry/vision_name_test.go	Recognizes MiniMax M3 as vision-capable when resolved through name-based fallback logic.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Possibly related PRs

• Gitlawb/zero#200: Introduces streaming logic related to the MiniMax think-tag parsing path.
• Gitlawb/zero#398: Modifies the MiniMax curated model catalog and provider definitions.

Suggested reviewers: vasanthdev2004, gnanam1990, jatmn, kevincodex1

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main MiniMax model and endpoint coverage refresh in the changeset.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

Warning

Tools execution failed with the following error:

Failed to run tools: 13 INTERNAL: Received RST_STREAM with code 2 (Internal server error)

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[Vasanthdev2004]

Reviewed #665 against the prior #611 concerns. This cleanly supersedes #611: it leaves the MiniMax base URLs at /anthropic (the provider descriptor file is untouched), so there's no /v1 doubling, and the new endpoint test asserts the resolved request URL for both regions and both compatible protocols — exactly the regression test that was asked for. Build, tests on the touched packages, vet, and gofmt are all clean, and the merge applies cleanly.

I also checked for the attribution pattern from the earlier preset PR: no partner/rebate/affiliate header, no recommended-tier elevation of MiniMax, and no hardcoded signing key or official-source trust anchor — the only new constant is a docs URL used as the model Source field. #611 is closed and should stay closed in favor of this one. The missing linked approved issue is the same gap that was waived on #611; I'm not blocking on it for a model refresh of an existing provider.

One minor note: the new minimax-m2 think-tag marker in the provider wiring also matches MiniMax-M2.1, which the catalog doesn't mark as a reasoning model — harmless in practice since stripping tags a model never emits is a no-op, but could be tightened to minimax-m2.7 later if M2.1 is definitively non-reasoning.

[kevincodex1]

looks great. thanks for contribution. please join discord