perf(admin): full-stack performance optimization for all list tables

- Implemented server-side search, infinite scrolling, and list virtualization for Tenants, Users, and Audit Logs.
- Backend: Enhanced Repository, Service, and Handler layers to support 'search' and 'cursor' parameters.
- Frontend: Integrated @tanstack/react-virtual and useInfiniteQuery for high-performance rendering.
- Quality: Updated all unit tests and E2E tests to match the new asynchronous server-side search architecture.
- i18n: Synced all translation keys and cleaned up unused resources.

backend/internal/handler/tenant_handler.go

@@ -2416,7 +2416,7 @@ func (h *TenantHandler) loadOrgContextMembers(ctx context.Context, tenantIDs, te
 	if err != nil {
 		return nil, err
 	}
-	usersByAppointment, _, _, err := h.UserRepo.List(ctx, 0, 10000, "", "", "")
+	usersByAppointment, _, _, err := h.UserRepo.List(ctx, 0, 10000, "", []string{}, "")
 	if err != nil {
 		return nil, err
 	}