Agent Observability — production evals & guards setup

The production counterpart to agento11y-test-starter (which runs pre-ship, on code alone, producing an offline test suite). This skill runs after ship, when the agent has real traffic, and sets up the two production surfaces the starter deliberately leaves out:

• Online eval rules — evaluators that score ingested live conversations, so regressions surface without hand-reviewing every conversation.
• Guards (hook-rules) — policies on the request path that warn (and can later be promoted to deny) in real time. A guard decides via one of three shapes: evaluator_ids (an evaluator judges), redact (regex redaction), or tool_filter (block tool calls). See Step 4.

What this skill does that agento11y doesn't

The sibling agento11y skill is the mechanics layer: exact CLI flags, evaluator/rule YAML shapes, create-or-update semantics, the online-eval setup steps. It assumes you already know what to create.