Initial commit: mini-erp (backend FastAPI + frontend React/Vite)

Base para el flujo de ramas por cliente.

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

mini-frontend/src/components/dashboard/DashboardGrid.tsx

@@ -0,0 +1,19 @@
+import type { ReactNode } from "react";
+
+interface GridProps {
+  children: ReactNode;
+}
+
+export default function DashboardGrid({ children }: GridProps) {
+  return (
+    <div
+      style={{
+        display: "grid",
+        gridTemplateColumns: "repeat(auto-fill, minmax(260px, 1fr))",
+        gap: "20px",
+      }}
+    >
+      {children}
+    </div>
+  );
+}