fix: correct TanStack Router search types for all navigate/Link calls

Each destination route's search must match its validateSearch shape exactly:
- Detail pages (tab-based): { tab: '...' }
- List pages with extra filters: include status, instructorId, view, categoryId etc.
- Form pages (enrollments/new, repairs/new): include only their specific fields
- use-pagination.ts: fix search reducer to use (prev: any) instead of invalid cast

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/admin/src/routes/_authenticated/members/$memberId.tsx

@@ -293,7 +293,7 @@ function MemberDetailPage() {
           <div className="flex items-center justify-between">
             <p className="text-sm text-muted-foreground">{enrollmentsData?.pagination.total ?? 0} enrollment(s)</p>
             {hasPermission('lessons.edit') && (
-              <Button size="sm" onClick={() => navigate({ to: '/lessons/enrollments/new', search: { memberId } })}>
+              <Button size="sm" onClick={() => navigate({ to: '/lessons/enrollments/new', search: { memberId, accountId: undefined } })}>
                 <Plus className="h-4 w-4 mr-1" />Enroll
               </Button>
             )}
@@ -307,7 +307,7 @@ function MemberDetailPage() {
             total={enrollmentsData?.data?.length ?? 0}
             onPageChange={() => {}}
             onSort={() => {}}
-            onRowClick={(e) => navigate({ to: '/lessons/enrollments/$enrollmentId', params: { enrollmentId: e.id }, search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'asc' as const } })}
+            onRowClick={(e) => navigate({ to: '/lessons/enrollments/$enrollmentId', params: { enrollmentId: e.id }, search: { tab: 'details' } })}
           />
         </div>
       )}

packages/admin/src/routes/_authenticated/members/index.tsx

@@ -84,7 +84,7 @@ function MembersListPage() {
             </Button>
           </DropdownMenuTrigger>
           <DropdownMenuContent align="end">
-            <DropdownMenuItem onClick={() => navigate({ to: '/members/$memberId', params: { memberId: row.id }, search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'asc' as const } })}>
+            <DropdownMenuItem onClick={() => navigate({ to: '/members/$memberId', params: { memberId: row.id }, search: { tab: 'details' } })}>
               <Pencil className="mr-2 h-4 w-4" />
               Edit
             </DropdownMenuItem>
@@ -134,7 +134,7 @@ function MembersListPage() {
         order={params.order}
         onPageChange={setPage}
         onSort={setSort}
-        onRowClick={(member) => navigate({ to: '/members/$memberId', params: { memberId: member.id }, search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'asc' as const } })}
+        onRowClick={(member) => navigate({ to: '/members/$memberId', params: { memberId: member.id }, search: { tab: 'details' } })}
       />
     </div>
   )