shared-infra-incident-readiness

Walk a user through the shared-infrastructure incident-readiness check. Loads the responsibility-matrix and DPA definitions, gathers the org's assignments via dialogue, runs `siir check-responsibility` / `siir check-dpa` in JSON mode, and reports PASS/REVISE/BLOCK with the first gap to fix. Use when the user wants to evaluate whether a shared platform (OEM /共通基盤) is ready for the first 30 minutes of an incident.

Render a shared-infrastructure incident initial-response runbook and Tabletop program from a scenario. Thin wrapper around `siir render-runbook` and `siir tabletop`; takes the org's responsibility-matrix answers + a scenario id and returns the 3-stage runbook (責任境界表 → Runbook → Communication Tree) and a facilitation program. Use when the user wants a runbook or a Tabletop exercise for a specific incident scenario.