test: redact internal endpoint fixtures

[7Sageer]

Related Issue

No linked issue. This addresses internal environment endpoints being present in test fixtures.

Problem

Some tests used real internal/dev endpoint hosts as fixture base URLs, which unnecessarily exposes environment details in the repository.

What changed

Replaced those fixture hosts with .example.test placeholders while preserving OAuth scoping, runtime auth, plugin environment propagation, and config round-trip coverage.

Validation run:

• pnpm vitest run test/utils/kimi-datasource-plugin.test.ts from apps/kimi-code
• pnpm vitest run test/auth-facade.test.ts from packages/node-sdk
• pnpm vitest run test/managed-kimi-code.test.ts test/toolkit.test.ts from packages/oauth
• pnpm vitest run test/rpc/plugins-rpc.test.ts test/config/configs.test.ts from packages/agent-core
• git diff --check

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.

[changeset-bot]

⚠️ No Changeset found

Latest commit: ebf29d4

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[pkg-pr-new]

pnpm dlx https://pkg.pr.new/@moonshot-ai/kimi-code@ebf29d4

npx https://pkg.pr.new/@moonshot-ai/kimi-code@ebf29d4

commit: ebf29d4