MarkRaw previously skipped both enrichPermissionError and
WriteErrorEnvelope, causing api command to exit 1 with no output
on API errors. Now MarkRaw only skips enrichPermissionError while
WriteErrorEnvelope always runs, ensuring stderr error envelope is
always written.
- Simplify apiRun MarkRaw logic (remove unnecessary IsJSONContentType check)
- Update existing tests to match new behavior
- Add 5 e2e tests covering api/service/shortcut error output
