feat: adição de novos ícones SVG e configuração do ambiente

- Adicionados ícones SVG para ChatGPT, Claude, Gemini e OpenRouter
- Implementados ícones para modos claro e escuro do ChatGPT
- Criado script de inicialização para PostgreSQL com extensão pgcrypto
- Adicionado script de configuração de ambiente que faz backup do .env
- Configurado tsconfig.json para TypeScript com opções de compilação

components/dashboard/dashboard-welcome.tsx

@@ -0,0 +1,76 @@
+"use client";
+
+import { main_font } from "@/public/fonts/font_index";
+import MagnetLines from "../magnet-lines";
+import { Card } from "../ui/card";
+
+type DashboardWelcomeProps = {
+  name?: string | null;
+};
+
+const capitalizeFirstLetter = (value: string) =>
+  value.length > 0 ? value[0]?.toUpperCase() + value.slice(1) : value;
+
+const formatCurrentDate = (date = new Date()) => {
+  const formatted = new Intl.DateTimeFormat("pt-BR", {
+    weekday: "long",
+    day: "numeric",
+    month: "long",
+    year: "numeric",
+    timeZone: "America/Sao_Paulo",
+  }).format(date);
+
+  return capitalizeFirstLetter(formatted);
+};
+
+const getGreeting = () => {
+  const now = new Date();
+
+  // Get hour in Brasilia timezone
+  const brasiliaHour = new Intl.DateTimeFormat("pt-BR", {
+    hour: "numeric",
+    hour12: false,
+    timeZone: "America/Sao_Paulo",
+  }).format(now);
+
+  const hour = parseInt(brasiliaHour, 10);
+
+  if (hour >= 5 && hour < 12) {
+    return "Bom dia";
+  } else if (hour >= 12 && hour < 18) {
+    return "Boa tarde";
+  } else {
+    return "Boa noite";
+  }
+};
+
+export function DashboardWelcome({ name }: DashboardWelcomeProps) {
+  const displayName = name && name.trim().length > 0 ? name : "Administrador";
+  const formattedDate = formatCurrentDate();
+  const greeting = getGreeting();
+
+  return (
+    <Card
+      className={`${main_font.className} relative px-6 py-12 bg-welcome-banner border-none shadow-lg overflow-hidden`}
+    >
+      <div className="absolute inset-0 flex items-center justify-center opacity-20 pointer-events-none">
+        <MagnetLines
+          rows={8}
+          columns={16}
+          containerSize="100%"
+          lineColor="currentColor"
+          lineWidth="0.4vmin"
+          lineHeight="5vmin"
+          baseAngle={0}
+          className="text-welcome-banner-foreground"
+        />
+      </div>
+      <div className="relative tracking-tight text-welcome-banner-foreground">
+        <h1 className="text-xl font-medium">
+          {greeting}, {displayName}! <span aria-hidden="true">👋</span>
+        </h1>
+        <p className="mt-2 text-sm opacity-90">{formattedDate}</p>
+      </div>
+    </Card>
+  );
+}