Our CI pipeline produces .xcresult bundles that allow developers to diagnose failures by opening them in Xcode. If the test crashes, we used to be able to open the diagnostic folders and inspect the raw test logs. As of Xcode 15, that option is no longer available. I know the Diagnostic data is there because I can view it with Xcode 14. Am I just missing something in the Xcode 15 UI? Or has the capability to browse the Diagnostics actually been removed?

I have been using Claude Agent with an Anthropic API Key in Xcode 26.3 for a while now. Recently it stopped working, giving me this error message: API Error (claude-opus-4-6): 400 The provided model identifier is invalid. I have tried relaunching Xcode, signing out and signing back in, changing the default model in the Claude configuration UI and nothing works. I've had to fall back on using the Claude Code CLI and the MCP server, which loses a lot of the value of Xcode/Claude integration.