Expands inline comments to explain why the Bearer token fallback is deliberately kept — it serves 22+ test invocations that call ReserveSlotHandler directly without middleware, never executes in production, and acts as defense-in-depth. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>