Add Filament admin panel and creative public portfolio site

Adds a Filament admin (Profile settings page plus CRUD resources for
Education, Experience, Projects, and Posts) backing a public-facing
personal site: hero/about/timeline home page, project showcase, and
blog, styled with a dark editorial theme (Fraunces + Instrument Sans).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/Http/Controllers/PostController.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Post;
+use Illuminate\View\View;
+
+class PostController extends Controller
+{
+    public function index(): View
+    {
+        $posts = Post::query()
+            ->published()
+            ->orderByDesc('published_at')
+            ->paginate(6);
+
+        return view('posts.index', compact('posts'));
+    }
+
+    public function show(Post $post): View
+    {
+        abort_unless($post->published_at?->isPast(), 404);
+
+        return view('posts.show', compact('post'));
+    }
+}