feat: bootstrap Laravel 13 foundation (Fase 0)

Implement OpenSpec change setup-foundation: Laravel 13 + Filament 5
admin panel, Livewire 4 public site shell, PostgreSQL via Compose,
design tokens, role-based auth, quality gates (Pint/Larastan/Pest),
FrankenPHP Dockerfile, and GitHub Actions CI with five blocking jobs.

Co-authored-by: Cursor <cursoragent@cursor.com>

resources/views/pages/home.blade.php

@@ -0,0 +1,20 @@
+@extends('layouts.public')
+
+@section('title', config('app.name'))
+
+@section('content')
+    <div class="container-amare">
+        <section class="rounded-xl border border-amare-border bg-amare-bg-muted p-8 shadow-amare-md">
+            <p class="mb-3 text-sm font-medium uppercase tracking-wide text-amare-accent">Assessoria de eventos</p>
+            <h1 class="mb-4 text-4xl font-semibold text-amare-text">Em breve</h1>
+            <p class="max-w-2xl text-lg text-amare-text-muted">
+                Estamos preparando a nova presença digital da assessoria. Em breve você poderá conhecer nossos serviços e solicitar um briefing.
+            </p>
+            <div class="mt-8">
+                <span class="inline-flex items-center rounded-full border border-amare-border bg-amare-bg px-4 py-2 text-sm text-amare-text">
+                    Fase 0 — Fundação concluída
+                </span>
+            </div>
+        </section>
+    </div>
+@endsection