feat: initial project with Phase 1 complete

app/Http/Controllers/PublicPageController.php

@@ -0,0 +1,58 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Controllers;
+
+use App\Models\PreregistrationPage;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+class PublicPageController extends Controller
+{
+    public function show(string $slug): View
+    {
+        $page = PreregistrationPage::where('slug', $slug)
+            ->where('is_active', true)
+            ->firstOrFail();
+
+        return view('public.page', compact('page'));
+    }
+
+    public function subscribe(Request $request, string $slug): JsonResponse
+    {
+        $page = PreregistrationPage::where('slug', $slug)
+            ->where('is_active', true)
+            ->firstOrFail();
+
+        abort_if(now()->lt($page->start_date) || now()->gt($page->end_date), 403);
+
+        $validated = $request->validate([
+            'first_name' => 'required|string|max:255',
+            'last_name'  => 'required|string|max:255',
+            'email'      => 'required|email|max:255',
+            'phone'      => $page->phone_enabled ? 'required|string|max:20' : 'nullable',
+        ]);
+
+        $exists = $page->subscribers()->where('email', $validated['email'])->exists();
+        if ($exists) {
+            return response()->json([
+                'success' => false,
+                'message' => 'This email address is already registered.',
+            ], 422);
+        }
+
+        $subscriber = $page->subscribers()->create($validated);
+
+        // Mailwizz sync will be wired up in Phase 4
+        if ($page->mailwizzConfig) {
+            // SyncSubscriberToMailwizz::dispatch($subscriber);
+        }
+
+        return response()->json([
+            'success' => true,
+            'message' => $page->thank_you_message ?? 'Thank you for registering!',
+        ]);
+    }
+}