Benchmark Workspace Guidance

This task is intentionally local to this workspace.

• Stay inside this workspace unless node test/audit-log.test.mjs fails in a way that clearly points to a benchmark harness bug.
• Use the local files as the source of truth.
• Keep the solution minimal. The intended fix is in src/main.mjs.

Relevant files:

• src/main.mjs: handwritten audit-log helpers and demo
• test/audit-log.test.mjs: exact required behavior

Preferred workflow:

1. Read test/audit-log.test.mjs.
2. Update src/main.mjs.
3. Run node test/audit-log.test.mjs.