feat(reports): capacity-based utilization + report CSVs

Utilization now measures booked minutes against each member's
availability-rule capacity in the tenant timezone, replacing the
confirmed-share proxy. StaffMetric exposes booked/capacity minutes.

New endpoints: GET /v1/export/staff-report.csv (reuses StaffMetrics)
and GET /v1/export/service-report.csv (per-service bookings/cancelled/
revenue, class bookings rolled up). Export buttons on the staff
performance panel and services page.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

packages/api-client/src/generated/types.ts

@@ -724,6 +724,46 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/v1/export/service-report.csv": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /**
+         * Export per-service booking report as CSV
+         * @description Bookings, cancellations, and revenue aggregated per catalog service over a trailing window. Class bookings roll into a final "class sessions" row when present.
+         */
+        get: operations["exportServiceReportCsv"];
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/v1/export/staff-report.csv": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /**
+         * Export per-staff performance report as CSV
+         * @description Summarized per-staff metrics — bookings, completed, cancelled, booked and capacity minutes, capacity-based utilization, revenue — over a trailing window. Same aggregation as `GET /v1/metrics/staff`.
+         */
+        get: operations["exportStaffReportCsv"];
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/v1/internal/jobs/reminders/dispatch": {
         parameters: {
             query?: never;
@@ -1603,8 +1643,12 @@ export interface components {
             tenantId: string;
         };
         StaffMetric: {
+            /** @description Sum of non-cancelled booking durations in the window */
+            bookedMinutes: number;
             bookings: number;
             cancelled: number;
+            /** @description Sum of the member's availability-rule minutes across the window, evaluated on local dates in the tenant timezone */
+            capacityMinutes: number;
             completed: number;
             displayName: string;
             /**
@@ -1614,7 +1658,7 @@ export interface components {
             revenueCents: number;
             /** Format: uuid */
             staffId: string;
-            /** @description Share of bookings that stayed confirmed, 0-100 */
+            /** @description bookedMinutes / capacityMinutes as a percentage; 0 when the member has no availability rules */
             utilizationPercent: number;
         };
         StaffMetricsResponse: {
@@ -3555,6 +3599,64 @@ export interface operations {
             };
         };
     };
+    exportServiceReportCsv: {
+        parameters: {
+            query?: {
+                days?: number;
+            };
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description CSV file download */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "text/csv": string;
+                };
+            };
+            /** @description Tenant membership not found */
+            404: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+        };
+    };
+    exportStaffReportCsv: {
+        parameters: {
+            query?: {
+                days?: number;
+            };
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description CSV file download */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "text/csv": string;
+                };
+            };
+            /** @description Tenant membership not found */
+            404: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+        };
+    };
     dispatchReminderJobs: {
         parameters: {
             query?: never;