refactor: Rename

frontend/src/components/Header.test.tsx

@@ -23,7 +23,7 @@ describe('Header', () => {
   it('wordmark click also navigates to login (and prevents the anchor default)', async () => {
     const onNav = vi.fn();
     render(<Header currentPage="sign" onNavigate={onNav} />);
-    const link = screen.getByRole('link', { name: /AltStore Web/ });
+    const link = screen.getByRole('link', { name: /Side Impactor/ });
     await userEvent.click(link);
     expect(onNav).toHaveBeenCalledWith('login');
     // Hash should not have been mutated by the default anchor behavior.

frontend/src/components/Header.tsx

@@ -20,7 +20,7 @@ export function Header({ currentPage, onNavigate }: HeaderProps) {
           <span className="inline-flex h-6 w-6 items-center justify-center rounded-md bg-ink text-[10px] font-bold text-white">
             A
           </span>
-          AltStore Web
+          Side Impactor
         </a>
         <nav className="seg" aria-label="Page">
           <button