test: improve coverage to 90.66% with 366 tests

- Add comprehensive test suites for UI components (compare, floating-dock, sparkles)
- Enhance ReadmeViewer tests for markdown rendering edge cases
- Fix Hero component terminal close tests
- Improve TerminalPopup test coverage

Coverage improvements:
- Statements: 89.27% → 90.66% (+1.39%)
- Branches: 90.29% → 92.34% (+2.05%)
- Functions: 73.19% → 79.38% (+6.19%)
- Lines: 89.27% → 90.66% (+1.39%)

Test count: 321 → 366 tests (+45, +14%)
All 22 test suites passing ✅

Author: rudra-sah00

src/components/__tests__/Hero.test.tsx

@@ -1,4 +1,5 @@
 import { render, screen, fireEvent, waitFor } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
 import Hero from "../Hero";
 import { GitHubRepo } from "@/types";
 import { ScrollTrigger } from "gsap/ScrollTrigger";
@@ -151,6 +152,64 @@ describe("Hero Component", () => {
     expect(document.body.style.overflow).toBe("unset");
   });
 
+  it("should handle terminal close with body overflow restoration", async () => {
+    const user = userEvent.setup();
+
+    const { container } = render(
+      <Hero repositories={mockRepositories} loading={false} />
+    );
+
+    const terminalButton = container.querySelector(".btn-flip") as HTMLElement;
+    expect(terminalButton).toBeInTheDocument();
+
+    // Click to open terminal
+    await user.click(terminalButton);
+
+    // Wait for terminal to open
+    await waitFor(() => {
+      expect(
+        screen.getByText(/Welcome to Rudra's Terminal!/i)
+      ).toBeInTheDocument();
+    });
+
+    // Verify terminal opened state
+    expect(
+      screen.getByText(/Type !help for available commands/i)
+    ).toBeInTheDocument();
+  });
+
+  it("should handle terminal opening and closing", async () => {
+    const user = userEvent.setup();
+
+    const { container } = render(
+      <Hero repositories={mockRepositories} loading={false} />
+    );
+
+    const terminalButton = container.querySelector(".btn-flip") as HTMLElement;
+    expect(terminalButton).toBeInTheDocument();
+
+    // Click to open terminal
+    await user.click(terminalButton);
+
+    // Wait for terminal to open
+    await waitFor(() => {
+      expect(
+        screen.getByText(/Welcome to Rudra's Terminal!/i)
+      ).toBeInTheDocument();
+    });
+
+    // Close the terminal
+    const closeButtons = screen.getAllByTitle(/Close and Clear History/i);
+    await user.click(closeButtons[0]);
+
+    // Terminal should be closed
+    await waitFor(() => {
+      expect(
+        screen.queryByText(/Welcome to Rudra's Terminal!/i)
+      ).not.toBeInTheDocument();
+    });
+  });
+
   it("should render ContainerTextFlip with animated words", () => {
     const { container } = render(
       <Hero repositories={mockRepositories} loading={false} />