feat: establish reservation portal foundation

app/Http/Controllers/DashboardController.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Domain\Reservations\Enums\ReservationStatus;
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+use Inertia\Response;
+
+class DashboardController extends Controller
+{
+    public function __invoke(Request $request): Response
+    {
+        $query = $request->user()->reservations();
+
+        $next = (clone $query)
+            ->with('items.asset:id,name,asset_tag,category_name')
+            ->where('ends_at', '>', now())
+            ->whereNotIn('status', [ReservationStatus::Rejected, ReservationStatus::Cancelled, ReservationStatus::Expired])
+            ->orderBy('starts_at')
+            ->first();
+
+        return Inertia::render('dashboard', [
+            'summary' => [
+                'pending' => (clone $query)->where('status', ReservationStatus::PendingApproval)->count(),
+                'approved' => (clone $query)->whereIn('status', [ReservationStatus::Approved, ReservationStatus::Ready])->count(),
+                'inUse' => (clone $query)->whereIn('status', [ReservationStatus::Delivered, ReservationStatus::InUse, ReservationStatus::Overdue])->count(),
+            ],
+            'nextReservation' => $next,
+            'recentReservations' => (clone $query)
+                ->with('items.asset:id,name,asset_tag')
+                ->latest()
+                ->limit(5)
+                ->get(),
+        ]);
+    }
+}