feat: Fase 1 - Autenticação completa

- Prisma com SQLite configurado
- Tabelas: users, sessions, subscriptions, children, etc
- Auth.js com credentials provider
- API de registro com criação de usuário + criança
- Middleware para proteger rotas
- Login/Cadastro funcionais
- Dashboard com sessão real

public/logo-iristea.svg

@@ -0,0 +1,49 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 120">
+  <defs>
+    <!-- Gradiente arco-íris -->
+    <linearGradient id="rainbow" x1="0%" y1="0%" x2="100%" y2="0%">
+      <stop offset="0%" style="stop-color:#ef4444"/>
+      <stop offset="20%" style="stop-color:#f59e0b"/>
+      <stop offset="40%" style="stop-color:#22c55e"/>
+      <stop offset="60%" style="stop-color:#3b82f6"/>
+      <stop offset="80%" style="stop-color:#8b5cf6"/>
+      <stop offset="100%" style="stop-color:#ec4899"/>
+    </linearGradient>
+    
+    <!-- Gradiente para o olho/íris -->
+    <radialGradient id="irisGrad" cx="50%" cy="50%" r="50%">
+      <stop offset="0%" style="stop-color:#818cf8"/>
+      <stop offset="50%" style="stop-color:#6366f1"/>
+      <stop offset="100%" style="stop-color:#4f46e5"/>
+    </radialGradient>
+  </defs>
+  
+  <!-- Ícone: Olho estilizado com arco-íris -->
+  <g transform="translate(10, 15)">
+    <!-- Arco-íris acima do olho -->
+    <path d="M 5 50 Q 45 5, 85 50" stroke="url(#rainbow)" stroke-width="6" fill="none" stroke-linecap="round"/>
+    
+    <!-- Forma do olho -->
+    <ellipse cx="45" cy="55" rx="38" ry="28" fill="white" stroke="#e5e7eb" stroke-width="2"/>
+    
+    <!-- Íris (parte colorida) -->
+    <circle cx="45" cy="55" r="22" fill="url(#irisGrad)"/>
+    
+    <!-- Pupila -->
+    <circle cx="45" cy="55" r="10" fill="#1e1b4b"/>
+    
+    <!-- Brilho -->
+    <circle cx="38" cy="48" r="5" fill="white" opacity="0.8"/>
+    <circle cx="50" cy="52" r="2" fill="white" opacity="0.6"/>
+  </g>
+  
+  <!-- Texto: IrisTEA -->
+  <text x="115" y="75" font-family="system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" font-size="52" font-weight="700">
+    <tspan fill="#1f2937">Iris</tspan><tspan fill="url(#rainbow)">TEA</tspan>
+  </text>
+  
+  <!-- Tagline -->
+  <text x="117" y="100" font-family="system-ui, -apple-system, sans-serif" font-size="14" fill="#6b7280" letter-spacing="0.5">
+    Teleterapia especializada em autismo
+  </text>
+</svg>