fix(config): recognize provider model capabilities

[LiPu-jpg]

Related Issue

Resolve #250

Problem

Environment-configured OpenAI and Anthropic models could inherit Kimi-only default capabilities. Several current provider models were also missing from static capability detection, so media, thinking, and tool support could be under-detected.

What changed

• Limit default KIMI_MODEL_CAPABILITIES to the Kimi provider.
• Add capability recognition for current MiMo, MiniMax, DeepSeek, and Kimi Open Platform models.
• Keep provider-path limitations conservative, such as not enabling MiniMax-M3 video_in while the Anthropic adapter does not send video_url.
• Add regression tests, docs updates, and changesets.

Checklist

• I have read the CONTRIBUTING document.
• I have linked a related issue, or explained the problem above.
• I have added tests that prove my feature works.
• Ran gen-changesets skill, or this PR needs no changeset.
• Ran gen-docs skill, or this PR needs no doc update.

Verification

• corepack pnpm --filter @moonshot-ai/agent-core exec vitest run test/config/env-model.test.ts
• corepack pnpm --filter @moonshot-ai/kosong exec vitest run test/capability-providers.test.ts
• corepack pnpm --filter @moonshot-ai/agent-core exec tsc -p tsconfig.json --noEmit
• corepack pnpm --filter @moonshot-ai/kosong exec tsc -p tsconfig.json --noEmit
• corepack pnpm lint -- packages/agent-core/src/config/env-model.ts packages/agent-core/test/config/env-model.test.ts
• corepack pnpm lint -- packages/kosong/src/providers/capability-registry.ts packages/kosong/src/providers/kimi.ts packages/kosong/test/capability-providers.test.ts
• corepack pnpm -C docs run build
• git diff --check

[changeset-bot]

🦋 Changeset detected

Latest commit: a535748

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@moonshot-ai/kimi-code	Patch

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