feat: Estratega section (06) — portrait + bio + quote

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

components/sections/__tests__/Estratega.test.tsx

@@ -0,0 +1,14 @@
+import { render, screen } from '@testing-library/react';
+import { describe, it, expect } from 'vitest';
+import { Estratega } from '../Estratega';
+
+describe('<Estratega />', () => {
+  it('renders the bio', () => {
+    render(<Estratega />);
+    expect(screen.getByText(/30 años/i)).toBeInTheDocument();
+  });
+  it('renders the institutional quote', () => {
+    render(<Estratega />);
+    expect(screen.getByText(/El tiempo no se compra/i)).toBeInTheDocument();
+  });
+});