feat(ui): make stat numbers clickable to open games

StatDrill context holds one dialog for a page. StatCount wraps a number:
total and status counts link to the library filter, other numbers open
StatGamesDialog. DrillRow and DrillButton support drill-down in tag bars
(genres, platforms, moods) and other stat displays. Dialog shows 40 games
per page with bottom-sheet layout on phones, handles pagination and errors
(403 not shared, 401 expired, 400 bad argument).

src/pages/StatsPage.test.jsx

@@ -89,4 +89,36 @@ describe('StatsPage', () => {
 
         await waitFor(() => expect(fetch).toHaveBeenCalledTimes(2));
     });
+
+    it('opensTheGamesBehindARowWithTheRawName', async () => {
+        fetchRoutes({
+            'GET /api/library/stats': json(200, stats()),
+            'GET /api/library/stats/games': json(200, {content: [{appid: 620, name: 'Portal 2', status: 'BACKLOG', playtimeMinutes: 60}],
+                page: 0, size: 40, totalElements: 1, totalPages: 1}),
+        });
+        renderPage();
+
+        fireEvent.click(await screen.findByRole('button', {name: /STATS\.GENRE/}));
+
+        expect(await screen.findByRole('dialog')).toBeTruthy();
+        await waitFor(() => expect(fetch.mock.calls.at(-1)[0]).toMatch(/stats\/games\?key=GENRE&arg=Shooter&page=0$/));
+    });
+
+    it('linksAStatusCountToTheFilteredLibrary', async () => {
+        answerStats(json(200, stats()));
+        renderPage();
+
+        const link = await screen.findByRole('link', {name: 'BACKLOG.STATUS.BACKLOG: 5'});
+
+        expect(link.getAttribute('href')).toBe('/library?hideDuplicates=true&status=BACKLOG');
+    });
+
+    it('leavesTheMoonTripsAlone', async () => {
+        answerStats(json(200, stats()));
+        renderPage();
+
+        await screen.findByText('STATS.HABITS.MOON');
+
+        expect(screen.queryByRole('button', {name: /STATS.HABITS.MOON/})).toBeNull();
+    });
 });