### What happened **Smoke Copilot** failed. [View run \#39469870442](https://github.com/github/gh-aw/actions/runs/39469870442) · [Workflow source](https://github.com/github/gh-aw/blob/copilot/expand-experiment-model-expressions/.github/workflows/smoke-copilot.md) · [Previous failures](https://github.com/search?q=repo%3Agithub%2Fgh-aw+is%3Aissue+%22gh-aw-workflow-id%3A+smoke-copilot%22&type=issues) **Branch:** `copilot/expand-experiment-model-expressions` **Pull Request:** [#70387](https://github.com/github/gh-aw/pull/70387) ### Next step Review the failure details below for a targeted fix, or **assign this issue to a coding agent** to investigate. ### Failure details <details> <summary>Runtime evidence</summary> #### Failure Diagnostics **Agent job:** `agent` **Agent job conclusion:** `failure` **Failing step:** `Assert unified-session contract` No additional engine error was captured. Check the reported failure signals and linked run for details. *Only runtime metadata is shown; agent-generated text is excluded.* </details> <details> <summary>Copy a debugging prompt</summary> Paste this into your coding agent: ```text Debug the agentic workflow "smoke-copilot" failure. Follow https://raw.githubusercontent.com/github/gh-aw/main/debug.md Failed run: https://github.com/github/gh-aw/actions/runs/39469870442 ``` If the repository includes the `agentic-workflows` skill, load it before investigating. </details> <details> <summary>Manage failure notifications</summary> To stop creating failure issues for this workflow, set this in its frontmatter and recompile: ```yaml safe-outputs: report-failure-as-issue: false ``` This only disables issue reporting; it does not fix the failure. </details> > Generated from [Smoke Copilot](https://github.com/github/gh-aw/actions/runs/39469870442) · copilot · sonnet55 · 28.9 AIC · [◷](https://github.com/search?q=repo%3Agithub%2Fgh-aw+is%3Aissue+%22gh-aw-workflow-id%3A+smoke-copilot%22&type=issues) > - [x] expires <!-- gh-aw-expires: 2026-10-21T06:03:07.143Z --> on Oct 21, 2026, 6:03 AM UTC <!-- gh-aw-agentic-workflow: Smoke Copilot, engine: copilot, model: claude-sonnet-5.5, id: 39469870442, workflow_id: smoke-copilot, run: https://github.com/github/gh-aw/actions/runs/39469870442 --> <!-- gh-aw-failure-issue: true, workflow_id: smoke-copilot, branch: copilot/expand-experiment-model-expressions, failure_categories: agent_failure, pull_request: 70387 -->
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