c0d46cb6b9
- Add preflight activity that validates repo path, config, and credentials before agent execution - Add formatWorkflowError() with pipe-delimited segments for multi-line log rendering - Add remediation hints for common failures (auth, billing, config errors) - Add REPO_NOT_FOUND, AUTH_FAILED, BILLING_ERROR codes with error classification - Add formatErrorBlock() in WorkflowLogger for indented error display