fix(stats): open game detail pages from stat lists, perfect games clickable

Add perfect games click-through on the dashboard. Remove Steam store
links from game lists. Stat numbers with count 0 are not clickable.
Tests cover the perfect-games click, zero guards, and owner versus
visitor behavior.

src/pages/LandingPage.test.jsx

@@ -43,6 +43,15 @@ describe('LandingPage', () => {
         }
     });
 
+    it('topGamesHaveNoStoreLink', async () => {
+        answer({topPlayedGames: [{appid: 220, name: 'Half-Life 2', value: 600}]});
+        const {container} = renderPage();
+
+        await screen.findByText('Half-Life 2');
+
+        expect(container.querySelector('a[href*="steampowered"]')).toBeNull();
+    });
+
     it('opensTheGamesBehindTheTotalButNotBehindOneUsersLibrary', async () => {
         fetchRoutes({
             'GET /api/stats/public': json(200, {topPlayedGames: [], topOwnedGames: [], totalLibraryEntries: 9, biggestLibrary: 4}),
@@ -58,4 +67,13 @@ describe('LandingPage', () => {
         expect(screen.queryByRole('button', {name: /LANDING\.BIGGEST_LIBRARY/})).toBeNull();
         expect(screen.queryByRole('button', {name: /LANDING\.TOTAL_USERS/})).toBeNull();
     });
+
+    it('aZeroTotalIsNotClickable', async () => {
+        answer({totalLibraryEntries: 0});
+        renderPage();
+
+        await screen.findByText('LANDING.TOTAL_GAMES');
+
+        expect(screen.queryByRole('button', {name: /LANDING\.TOTAL_GAMES/})).toBeNull();
+    });
 });