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/lessons/enrollments/$enrollmentId.tsx

@@ -131,7 +131,7 @@ function EnrollmentDetailPage() {
   return (
     <div className="space-y-6">
       <div className="flex items-center gap-4">
-        <Button variant="ghost" size="sm" onClick={() => navigate({ to: '/lessons/enrollments', search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'asc' as const } })}>
+        <Button variant="ghost" size="sm" onClick={() => navigate({ to: '/lessons/enrollments', search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'desc' as const, status: undefined, instructorId: undefined } })}>
           <ArrowLeft className="h-4 w-4 mr-1" />Back
         </Button>
         <div className="flex-1">
@@ -344,7 +344,7 @@ function SessionsTab({ enrollmentId, onGenerate, generating }: { enrollmentId: s
         total={data?.data?.length ?? 0}
         onPageChange={() => {}}
         onSort={() => {}}
-        onRowClick={(s) => navigate({ to: '/lessons/sessions/$sessionId', params: { sessionId: s.id }, search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'asc' as const } })}
+        onRowClick={(s) => navigate({ to: '/lessons/sessions/$sessionId', params: { sessionId: s.id }, search: {} })}
       />
     </div>
   )
@@ -383,7 +383,7 @@ function LessonPlanTab({ enrollmentId, memberId, canEdit }: { enrollmentId: stri
       queryClient.invalidateQueries({ queryKey: lessonPlanKeys.all })
       toast.success('Plan created from template')
       setTemplatePickerOpen(false)
-      navigate({ to: '/lessons/plans/$planId', params: { planId: plan.id }, search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'asc' as const } })
+      navigate({ to: '/lessons/plans/$planId', params: { planId: plan.id }, search: {} })
     },
     onError: (err) => toast.error(err.message),
   })
@@ -401,7 +401,7 @@ function LessonPlanTab({ enrollmentId, memberId, canEdit }: { enrollmentId: stri
                 {Math.round(activePlan.progress)}% complete
               </p>
             </div>
-            <Button variant="outline" size="sm" onClick={() => navigate({ to: '/lessons/plans/$planId', params: { planId: activePlan.id }, search: { page: 1, limit: 25, q: undefined, sort: undefined, order: 'asc' as const } })}>
+            <Button variant="outline" size="sm" onClick={() => navigate({ to: '/lessons/plans/$planId', params: { planId: activePlan.id }, search: {} })}>
               View Plan
             </Button>
           </div>