- headless.ts: emit error field on tool_result when output starts with Error: - test-multi-model.ts: errored/timed-out models now shown as RED and exit(1) - test-multi-model.ts: validate --timeout arg (reject NaN/negative) - test-edge-cases.ts: use exact match instead of trim() for whitespace test - test-edge-cases.ts: skip file pre-creation for create-via-append test Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>