Inspect governance evidence, execution outcomes, and reservation state

Read-only governance overview. policy_decisions are retained authorization evidence, not agent memory, queued jobs, or proof that a provider ran. The by_decision_kind blocks separate legacy, preview, simulation, authorization_precheck, and authorization_attempt; legacy rows predate phase tagging and cannot be safely reclassified. Durable invocation rows are the execution-outcome source of truth, while receipts and settlement records remain separate proof surfaces. Reservation counters distinguish unbacked active holds, invocation-backed residual cap holds, pending commits, committed rows, and inactive released/expired rows. A large retained count (for example 5,500+) is not a count of agents, memories, jobs, or executions: one request can emit preview, precheck, and final-attempt evidence. by_action shows what was controlled, by_decision_kind shows the phase, and durable invocations/receipts show what actually ran. PostgreSQL caps the 23 independent overview reads at three concurrent queries per request; SQLite keeps serialized adapter behavior.