feat(export): CSV export for bookings and customers

GET /v1/export/bookings.csv (optional from/to bounds) and
/v1/export/customers.csv — UTF-8 with BOM for Excel, labels resolved
at export time, buffered responses so auth failures stay JSON.
Export buttons on the bookings and customers pages.

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

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

apps/frontend/tsconfig.tsbuildinfo

@@ -1 +1 @@
-{"root":["./src/App.tsx","./src/main.tsx","./src/components/animated-list.tsx","./src/components/bookra-character.tsx","./src/components/calendar-feed.tsx","./src/components/dashboard-mockup.tsx","./src/components/floating-dock.tsx","./src/components/hover-feature-cards.tsx","./src/components/index.ts","./src/components/integration-modal.tsx","./src/components/location-map.tsx","./src/components/pinned-list.tsx","./src/components/shell.tsx","./src/components/sms-settings.tsx","./src/components/video-player.tsx","./src/components/widget-builder.tsx","./src/components/dashboard/activity-timeline.tsx","./src/components/dashboard/calendar-view.tsx","./src/components/dashboard/icons.tsx","./src/components/dashboard/kpi-card.tsx","./src/components/dashboard/notification-dropdown.tsx","./src/components/dashboard/revenue-chart.tsx","./src/components/dashboard/types.ts","./src/components/ui/avatar.tsx","./src/components/ui/badge.tsx","./src/components/ui/button.tsx","./src/components/ui/card.tsx","./src/components/ui/dialog.tsx","./src/components/ui/index.ts","./src/components/ui/input.tsx","./src/components/ui/select.tsx","./src/components/ui/skeleton.tsx","./src/components/ui/tabs.tsx","./src/components/ui/textarea.tsx","./src/components/ui/tooltip.tsx","./src/lib/api-client.ts","./src/lib/map.ts","./src/lib/sentry.ts","./src/lib/types.ts","./src/providers/auth-provider.tsx","./src/providers/i18n-provider.tsx","./src/providers/theme-provider.tsx","./src/routes/about-route.tsx","./src/routes/auth-callback-route.tsx","./src/routes/booking-manage-route.tsx","./src/routes/contact-route.tsx","./src/routes/home-route.tsx","./src/routes/legal-route.tsx","./src/routes/not-found-route.tsx","./src/routes/pricing-route.tsx","./src/routes/public-booking-route.tsx","./src/routes/dashboard/billing-page.tsx","./src/routes/dashboard/bookings-page.tsx","./src/routes/dashboard/customers-page.tsx","./src/routes/dashboard/dashboard-data.ts","./src/routes/dashboard/layout.tsx","./src/routes/dashboard/overview-page.tsx","./src/routes/dashboard/services-page.tsx","./src/routes/dashboard/settings-page.tsx","./src/routes/dashboard/staff-page.tsx","./src/routes/dashboard/zones-page.tsx","./vite.config.ts"],"version":"5.9.3"}
+{"root":["./src/App.tsx","./src/main.tsx","./src/components/animated-list.tsx","./src/components/bookra-character.tsx","./src/components/calendar-feed.tsx","./src/components/dashboard-mockup.tsx","./src/components/floating-dock.tsx","./src/components/hover-feature-cards.tsx","./src/components/index.ts","./src/components/integration-modal.tsx","./src/components/location-map.tsx","./src/components/pinned-list.tsx","./src/components/shell.tsx","./src/components/sms-settings.tsx","./src/components/video-player.tsx","./src/components/widget-builder.tsx","./src/components/dashboard/activity-timeline.tsx","./src/components/dashboard/calendar-view.tsx","./src/components/dashboard/export-csv-button.tsx","./src/components/dashboard/icons.tsx","./src/components/dashboard/kpi-card.tsx","./src/components/dashboard/notification-dropdown.tsx","./src/components/dashboard/revenue-chart.tsx","./src/components/dashboard/types.ts","./src/components/ui/avatar.tsx","./src/components/ui/badge.tsx","./src/components/ui/button.tsx","./src/components/ui/card.tsx","./src/components/ui/dialog.tsx","./src/components/ui/index.ts","./src/components/ui/input.tsx","./src/components/ui/select.tsx","./src/components/ui/skeleton.tsx","./src/components/ui/tabs.tsx","./src/components/ui/textarea.tsx","./src/components/ui/tooltip.tsx","./src/lib/api-client.ts","./src/lib/map.ts","./src/lib/sentry.ts","./src/lib/types.ts","./src/providers/auth-provider.tsx","./src/providers/i18n-provider.tsx","./src/providers/theme-provider.tsx","./src/routes/about-route.tsx","./src/routes/auth-callback-route.tsx","./src/routes/booking-manage-route.tsx","./src/routes/contact-route.tsx","./src/routes/home-route.tsx","./src/routes/legal-route.tsx","./src/routes/not-found-route.tsx","./src/routes/pricing-route.tsx","./src/routes/public-booking-route.tsx","./src/routes/dashboard/billing-page.tsx","./src/routes/dashboard/bookings-page.tsx","./src/routes/dashboard/customers-page.tsx","./src/routes/dashboard/dashboard-data.ts","./src/routes/dashboard/layout.tsx","./src/routes/dashboard/overview-page.tsx","./src/routes/dashboard/services-page.tsx","./src/routes/dashboard/settings-page.tsx","./src/routes/dashboard/staff-page.tsx","./src/routes/dashboard/zones-page.tsx","./vite.config.ts"],"version":"5.9.3"}