Fetch a QMSCloud report from Metabase and analyze it to answer the user's question. Returns a compact summary (distinct tickets; breakdowns by status, service, branch, counter, business date; a ticket_numbers list; and waiting/serving-time stats) plus a few sampleRows. For questions that require listing individual tickets WITH their times, pass detail=true to also get a per-ticket table. Pass the exact report key (call list_reports if unsure). Supply start_date/end_date as YYYY-MM-DD from the user's intent (defaults to current month-to-date). The tenant (company/branch) is resolved automatically from the workspace — do not ask the user for it. Currently available: 'ticket_summary'.

List the QMSCloud report keys this server can fetch from Metabase.