feat(renderer): AsciiGeneratorDialog (figlet text-to-ASCII-art)

tests/component/modals/AsciiGeneratorDialog.test.tsx

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+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { AsciiGeneratorDialog } from '@/components/modals/AsciiGeneratorDialog';
+
+vi.mock('@/lib/figlet', () => ({
+  figletText: vi.fn().mockResolvedValue(' MOCKED ASCII '),
+  FIGLET_FONTS: ['Standard', 'Big', 'Small', 'Banner', 'Doom', 'Slant', 'Block'],
+}));
+
+describe('AsciiGeneratorDialog', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('renders with an input textarea and font selector', () => {
+    render(<AsciiGeneratorDialog />);
+    expect(screen.getByText(/ascii generator/i)).toBeInTheDocument();
+    expect(screen.getByRole('combobox', { name: /font/i })).toBeInTheDocument();
+    expect(screen.getByRole('textbox', { name: /text/i })).toBeInTheDocument();
+  });
+
+  it('renders the ASCII output as the user types', async () => {
+    render(<AsciiGeneratorDialog />);
+    const input = screen.getByRole('textbox', { name: /text/i });
+    await userEvent.type(input, 'hi');
+    const pre = await screen.findByTestId('ascii-output');
+    expect(pre).toHaveTextContent('MOCKED ASCII');
+  });
+
+  it('shows a copy button next to the output', () => {
+    render(<AsciiGeneratorDialog />);
+    expect(screen.getByRole('button', { name: /copy/i })).toBeInTheDocument();
+  });
+});