[Yoosseph]

Summary

Let users bring OpenAI, Claude (Anthropic), and DeepSeek keys for debriefs. Release the CLI as getownit@0.1.9.

 ownit key set
   Nebius / NVIDIA
+  OpenAI / Claude (Anthropic) / DeepSeek
 worker
   chat completions: Nebius / NVIDIA
+  chat completions: OpenAI / DeepSeek
+  Messages API: Claude

Adds hidden key setup, provider environment variables, model reporting, provider-specific error handling, and setup documentation. claude and anthropic select the same provider. Existing key priority and the Nebius default are preserved.

Evidence

• Before: Only nebius and nvidia were accepted in the CLI and worker provider registries.
  After: Tests cover saving each new key, environment selection, endpoint/authentication routing, Claude text extraction, and complete mocked question/grade flows for each provider.
• npm test: 149 worker tests and 91 CLI tests passed.
• npm run typecheck, npm run build, and git diff --check passed.
• Real API calls with the three new providers have not been tested. Production deployment will be verified through /models before triggering the npm release.

Merge Danger

Door: two-way

Worker changes can be rolled back. Existing clients and provider defaults remain supported. An npm release requires a subsequent version to correct any published defect.

Blast Radius: providers

New provider requests and CLI key setup. No schema migrations. Merging triggers the existing production Deploy workflow; the v0.1.9 tag triggers npm publishing after deployment verification.