feat(dashboard): detail-first Continue Watching cards with quick actions (#1469)

* feat(dashboard): detail-first continue watching cards with quick actions (#1441)

Continue Watching cards now open the detail page on click like movie
cards; resuming the saved episode, marking it watched, and removing the
entry from history move into a per-card ⋮ menu. Series details land on
the earliest season with unwatched episodes (or the latest once all are
watched) instead of always season 1.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(dashboard): address review findings and season auto-select regressions

- A session's own watched toggles no longer re-resolve the selected
  season when the positions map first fills — marking season 1 watched
  used to jump the view to season 2 (CI regression in the web and
  Electron season-watched-toggle E2Es).
- The all-watched season fallback skips loaded-but-empty seasons and
  picks the latest season that has episodes (Greptile P1).
- Mark as Watched uses the strict failure-propagating save boundary
  (Codex P2), and both card mutations surface persistence failures via
  a snackbar with the new WORKSPACE.DASHBOARD.ACTION_FAILED key in all
  19 languages (Greptile P2).
- Season E2Es now assert the intended post-reload behavior: the fresh
  mount lands on the earliest unwatched season while season 1 keeps its
  watched state behind its tab.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: 4gray <fourgray@proton.me>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

apps/web-e2e/src/xtream.e2e.ts

@@ -754,15 +754,24 @@ test('@xtream season watched toggle — marks a season, survives reload, and cle
     );
 
     // PWA persistence: positions live in localStorage, so a reload of the
-    // detail route must come back fully watched.
+    // detail route must come back fully watched. With season 1 completed the
+    // fresh mount auto-selects the earliest season with unwatched episodes
+    // (issue #1441), so season 2 opens while season 1's tab keeps the check.
     await page.reload();
     await expect(seasonToggle).toBeVisible({ timeout: 20_000 });
-    await expect(seasonToggle).toContainText('Mark season as unwatched');
-    await expect(watchedCards).toHaveCount(8, { timeout: 10_000 });
+    await expect(seasonToggle).toContainText('Mark season as watched (8)');
+    await expect(watchedCards).toHaveCount(0, { timeout: 10_000 });
     await expect(
         seasonTabs.first().locator('.season-tabs__done')
     ).toBeVisible();
 
+    // Season 1 itself still holds the 8 persisted rows.
+    await seasonTabs.first().click();
+    await expect(seasonToggle).toContainText('Mark season as unwatched', {
+        timeout: 15_000,
+    });
+    await expect(watchedCards).toHaveCount(8, { timeout: 10_000 });
+
     // Second click clears every episode's position again.
     await seasonToggle.click();
     await expect(seasonToggle).toContainText('Mark season as watched (8)', {