fix(harness): avoid using peer dependencies for underlying harness and sandbox SDKs

[felixarntz]

Background

The harness-* and sandbox-* adapters were using peer dependencies for their underlying SDKs, which is not right.

Summary

• the sandbox adapters now have their underlying SDK as a regular (prod) dependency
• the Claude Code and Codex harness adapters only have the underlying SDK as a dev dependency because the SDK is only used inside the sandbox (i.e. not on the host environment) with the bridge; the dev dependency is only used so that types etc. resolve
• the Pi harness has its underlying SDK as regular (prod) dependency, because unlike Claude Code and Codex it runs on the host machine and only operates on the sandbox, but from the outside

Manual Verification

Run the existing harness examples.

Checklist

• All commits are signed (PRs with unsigned commits cannot be merged)
• Tests have been added / updated (for bug fixes / features)
• Documentation has been added / updated (for bug fixes / features)
• A patch changeset for relevant packages has been added (for bug fixes / features - run pnpm changeset in the project root)
• I have reviewed this pull request (self-review)

[github-actions]

🚀 Published in:

Package	Version
ai	7.0.0-canary.172 github npm
@ai-sdk/alibaba	2.0.0-canary.59 github npm
@ai-sdk/amazon-bedrock	5.0.0-canary.84 github npm
@ai-sdk/angular	3.0.0-canary.172 github npm
@ai-sdk/anthropic	4.0.0-canary.66 github npm
@ai-sdk/anthropic-aws	1.0.0-canary.7 github npm
@ai-sdk/assemblyai	3.0.0-canary.50 github npm
@ai-sdk/azure	4.0.0-canary.75 github npm
@ai-sdk/baseten	2.0.0-canary.56 github npm
@ai-sdk/black-forest-labs	2.0.0-canary.50 github npm
@ai-sdk/bytedance	2.0.0-canary.51 github npm
@ai-sdk/cerebras	3.0.0-canary.56 github npm
@ai-sdk/cohere	4.0.0-canary.52 github npm
@ai-sdk/deepgram	3.0.0-canary.49 github npm
@ai-sdk/deepinfra	3.0.0-canary.56 github npm
@ai-sdk/deepseek	3.0.0-canary.54 github npm
@ai-sdk/devtools	1.0.0-canary.30 github npm
@ai-sdk/elevenlabs	3.0.0-canary.49 github npm
@ai-sdk/fal	3.0.0-canary.49 github npm
@ai-sdk/fireworks	3.0.0-canary.56 github npm
@ai-sdk/gateway	4.0.0-canary.104 github npm
@ai-sdk/gladia	3.0.0-canary.49 github npm
@ai-sdk/google	4.0.0-canary.81 github npm
@ai-sdk/google-vertex	5.0.0-canary.107 github npm
@ai-sdk/groq	4.0.0-canary.53 github npm
@ai-sdk/harness	1.0.0-canary.7 github npm
@ai-sdk/harness-claude-code	1.0.0-canary.3 github npm
@ai-sdk/harness-codex	1.0.0-canary.3 github npm
@ai-sdk/harness-pi	1.0.0-canary.3 github npm
@ai-sdk/huggingface	2.0.0-canary.56 github npm
@ai-sdk/hume	3.0.0-canary.49 github npm
@ai-sdk/klingai	4.0.0-canary.50 github npm
@ai-sdk/langchain	3.0.0-canary.172 github npm
@ai-sdk/llamaindex	3.0.0-canary.172 github npm
@ai-sdk/lmnt	3.0.0-canary.49 github npm
@ai-sdk/luma	3.0.0-canary.49 github npm
@ai-sdk/mcp	2.0.0-canary.63 github npm
@ai-sdk/mistral	4.0.0-canary.54 github npm
@ai-sdk/moonshotai	3.0.0-canary.56 github npm
@ai-sdk/open-responses	2.0.0-canary.53 github npm
@ai-sdk/openai	4.0.0-canary.73 github npm
@ai-sdk/openai-compatible	3.0.0-canary.56 github npm
@ai-sdk/otel	1.0.0-canary.118 github npm
@ai-sdk/perplexity	4.0.0-canary.52 github npm
@ai-sdk/policy-opa	1.0.0-canary.9 github npm
@ai-sdk/prodia	2.0.0-canary.52 github npm
@ai-sdk/provider-utils	5.0.0-canary.48 github npm
@ai-sdk/quiverai	2.0.0-canary.5 github npm
@ai-sdk/react	4.0.0-canary.175 github npm
@ai-sdk/replicate	3.0.0-canary.50 github npm
@ai-sdk/revai	3.0.0-canary.50 github npm
@ai-sdk/rsc	3.0.0-canary.173 github npm
@ai-sdk/sandbox-just-bash	1.0.0-canary.7 github npm
@ai-sdk/sandbox-vercel	1.0.0-canary.7 github npm
@ai-sdk/svelte	5.0.0-canary.172 github npm
@ai-sdk/togetherai	3.0.0-canary.56 github npm
@ai-sdk/tui	1.0.0-canary.7 github npm
@ai-sdk/valibot	3.0.0-canary.48 github npm
@ai-sdk/vercel	3.0.0-canary.56 github npm
@ai-sdk/voyage	2.0.0-canary.23 github npm
@ai-sdk/vue	4.0.0-canary.172 github npm
@ai-sdk/workflow	1.0.0-canary.89 github npm
@ai-sdk/xai	4.0.0-canary.74 github npm