feat: Add join tokens for trust zone servers

[alec-w]

No description provided.

[github-actions]

The latest Buf updates on your PR. Results from workflow buf-ci / buf (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	Feb 3, 2026, 10:58 PM

[gemini-code-assist]

Summary of Changes

Hello @alec-w, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new capability to the Trust Zone Server service, allowing the creation of temporary join tokens. These tokens provide a flexible and secure mechanism for Trust Zone Servers to register with the Connect platform, especially in situations where traditional server verification might be challenging. The changes span protobuf definitions, generated code for Go and TypeScript, and updates to both real and fake client implementations to fully integrate this new feature.

Highlights

• New RPC Method: A new RPC method, CreateJoinToken, has been added to the TrustZoneServerService. This method allows for the generation of temporary tokens that Trust Zone Servers can use to register with the Connect system.
• Protobuf Definitions: New protobuf messages, CreateJoinTokenRequest and CreateJoinTokenResponse, have been defined to support the new CreateJoinToken RPC. These definitions include the trust_zone_server_id for the request and the join_token for the response.
• Client and Server Implementations: The Go and TypeScript client and server interfaces and implementations for the TrustZoneServerService have been updated to include the new CreateJoinToken method. This ensures that the new functionality is exposed and handled correctly across the service.
• Fake Client Support: The fake client implementation (fakeconnect.go and fake.go) has been extended to support the CreateJoinToken method, including the storage of generated join tokens, which is crucial for testing and development environments.

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[gemini-code-assist]

Code Review

This pull request adds the functionality to create join tokens for trust zone servers. The changes are well-implemented across the protobuf definitions, generated code, client, and tests. The code quality is high and the new feature is well-tested. I have one minor suggestion for improving the fake client implementation.