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/components/AchievementsCard.test.jsx

@@ -1,8 +1,10 @@
 // @vitest-environment jsdom
 import {afterEach, describe, expect, it, vi} from 'vitest';
-import {cleanup, render, screen} from '@testing-library/react';
+import {cleanup, fireEvent, render, screen} from '@testing-library/react';
 import {MemoryRouter} from 'react-router-dom';
 import AchievementsCard from './AchievementsCard.jsx';
+import {StatDrillProvider} from './stats/StatDrill.jsx';
+import {fetchRoutes, json} from '../test/fetchRoutes.js';
 
 vi.mock('react-i18next', () => import('../test/i18n-mock.js'));
 
@@ -49,4 +51,22 @@ describe('AchievementsCard', () => {
 
         expect(screen.getByText('DASHBOARD.ACHIEVEMENTS.NONE')).toBeTruthy();
     });
+
+    it('opensThePerfectGamesInTheOwnLibrary', async () => {
+        fetchRoutes({'GET /api/library/stats/games': json(200, {
+            content: [{appid: -7, name: 'Manual Game'}], page: 0, size: 40, totalElements: 1, totalPages: 1})});
+        render(<MemoryRouter><StatDrillProvider source="own"><AchievementsCard summary={summary()}/></StatDrillProvider></MemoryRouter>);
+
+        fireEvent.click(screen.getByRole('button', {name: 'DASHBOARD.ACHIEVEMENTS.PERFECT: 2'}));
+
+        const link = await screen.findByRole('link', {name: /Manual Game/});
+        expect(fetch.mock.calls[0][0]).toContain('key=PERFECT&page=0');
+        expect(link.getAttribute('href')).toBe('/library/-7');
+    });
+
+    it('perfectGamesAreNotClickableAtZero', () => {
+        render(<MemoryRouter><StatDrillProvider source="own"><AchievementsCard summary={summary({perfectGames: 0})}/></StatDrillProvider></MemoryRouter>);
+
+        expect(screen.queryByRole('button')).toBeNull();
+    });
 });