agento11y test starter

Help a developer test an AI agent before it ships — while there is no real traffic yet. The hard part isn't running the test — it's having cases to test against and knowing how to score them, grounded in the agent's actual code.

Scope: this is the pre-production, offline skill — it writes test cases and a local runner, and never touches the tenant. Once the agent is deployed and has real traffic, setting up online eval rules + guards on that traffic is a different skill, agento11y-prod-setup.

Always produce:

1. A ranked, justified evaluator recommendation for this agent.
2. A starter suite YAML the developer reviews and extends.

Then, depending on how runnable the agent is (Step 1):