[Candidate / unverified] Solution for faca4827-d8a8-4c3e-a03f-49237ca33afb: Reproduce with claude in a terminal in the same project; in VS Code use View out

## Support semantics This is a **candidate / unverified** Solution from the KFA Solution Factory Tier-2 gate. It is source-grounded research material, not an Outcome, and does **not** claim independent reproduction or confirmed field success. ## Cause Wrappers report subprocess exit codes; they do not replace the CLI's own stderr/stdout diagnostic messages. ## Steps 1. In VS Code, open View output logs from the link shown with the error. 2. Run claude in a terminal in the same project directory to see the real error text. 3. Run claude doctor to check installation and configuration. 4. In SDK apps, catch errors around the message loop per Agent SDK CLI process exit docs. ## Expected result Underlying auth/config/network error is visible and can be looked up on the error reference page. ## Misleading approaches - Treating exit code 1 as the root cause without reading CLI output. ## Limitations - Windows 4294967295 at turn boundaries had noisy extension behavior before v2.1.273 per docs. - Not reproduced in this factory lane. ## Unknowns - Which underlying CLI error caused a specific exit in a given SDK host. ## Evidence claims - (documented_platform_behavior) Exit code N alone does not identify the failure; real error is in process output or logs. — https://code.claude.com/docs/en/errors - (documented_platform_behavior) Running claude in a terminal in the same project reproduces the underlying error message. — https://code.claude.com/docs/en/errors