fix(e2e): fix category-management filter scoping and recent grid pagination

- category-management: replace filter({ has: dialog.locator(...) }) with
  filter({ hasText }) on the .category-item row. Playwright cannot scope an
  absolute locator (created via dialog.locator()) to each candidate element
  when used inside filter({ has: }), so the query always returned empty.
  Using hasText on the whole row correctly retries until Angular's @for loop
  re-renders filteredCategories() after the search field is populated.

- recent.e2e.ts Xtream test: same pagination fix as favorites — derive
  movieTitle and seriesTitle from waitForFirstGridListCardTitle() instead of
  pickDistinctTitles(fixture.items)[0], which may be on page 2 of the
  date-sorted grid and never visible.

https://claude.ai/code/session_01VU6ZZTG7YrhKhKBQvBfmpp

apps/electron-backend-e2e/src/recent.e2e.ts

@@ -23,6 +23,7 @@ import {
     switchUnifiedCollectionContent,
     switchUnifiedCollectionScope,
     test,
+    waitForFirstGridListCardTitle,
     waitForM3uCatalog,
     waitForStalkerCatalog,
     waitForXtreamWorkspaceReady,
@@ -115,8 +116,6 @@ test.describe('Electron Recently Viewed', () => {
             xtreamCredentials
         );
         const [liveTitle] = pickDistinctTitles(liveFixture.items, getXtreamTitle);
-        const [movieTitle] = pickDistinctTitles(vodFixture.items, getXtreamTitle);
-        const [seriesTitle] = pickDistinctTitles(seriesFixture.items, getXtreamTitle);
         const portalTitle = 'Xtream Recent Source';
         const app = await launchElectronApp(dataDir);
 
@@ -141,6 +140,9 @@ test.describe('Electron Recently Viewed', () => {
                 app.mainWindow,
                 vodFixture.categoryName
             );
+            // Pick from the displayed grid: fixture order ≠ display order (date-desc
+            // sort + pagination), so the first fixture item may not be on page 1.
+            const movieTitle = await waitForFirstGridListCardTitle(app.mainWindow);
             await clickGridListCardByTitle(app.mainWindow, movieTitle);
             await playCurrentDetail(app.mainWindow);
             await goBackFromDetail(app.mainWindow);
@@ -150,6 +152,7 @@ test.describe('Electron Recently Viewed', () => {
                 app.mainWindow,
                 seriesFixture.categoryName
             );
+            const seriesTitle = await waitForFirstGridListCardTitle(app.mainWindow);
             await clickGridListCardByTitle(app.mainWindow, seriesTitle);
             await playFirstSeriesEpisode(app.mainWindow);