frontend/e2e/manga-list.spec.ts

@@ -1,4 +1,5 @@
 import { test, expect, type Page } from '@playwright/test';
+import { SORT_FIELD_LABELS } from '../src/lib/mangaSort';
 
 // These E2E tests run against the SvelteKit dev server, which proxies /api
 // to the backend. Playwright starts vite via `webServer` (see
@@ -44,6 +45,35 @@ test('home page renders the Mangalord heading and search input', async ({ page }
     await expect(page.getByTestId('empty')).toContainText('No mangas yet');
 });
 
+// Anti-drift guard: the desktop sort <select> and the mobile sort sheet must
+// both enumerate exactly SORT_FIELD_LABELS, in the same order. The desktop
+// select used to hard-code its <option>s, so a label rename in mangaSort.ts
+// would silently diverge the two surfaces. Comparing the rendered options to
+// the single source of truth makes that divergence fail loudly.
+test('desktop sort options stay in sync with SORT_FIELD_LABELS', async ({ page }) => {
+    await mockAnonymous(page);
+    await page.route('**/api/v1/mangas*', async (route) => {
+        await route.fulfill({
+            status: 200,
+            contentType: 'application/json',
+            body: JSON.stringify(emptyPage)
+        });
+    });
+
+    await page.goto('/');
+    const select = page.getByTestId('sort-select');
+    await expect(select).toBeVisible();
+
+    const options = select.locator('option');
+    const labels = (await options.allTextContents()).map((s) => s.trim());
+    const values = await options.evaluateAll((opts) =>
+        opts.map((o) => (o as HTMLOptionElement).value)
+    );
+
+    expect(values).toEqual(Object.keys(SORT_FIELD_LABELS));
+    expect(labels).toEqual(Object.values(SORT_FIELD_LABELS));
+});
+
 test('search updates the manga list', async ({ page }) => {
     await mockAnonymous(page);
     let lastSearch: string | null = null;

frontend/src/routes/+page.svelte

@@ -538,10 +538,11 @@
         <label class="sort">
             <span>Sort</span>
             <select bind:value={sort} onchange={onSortChange} data-testid="sort-select">
-                <option value="updated">Last updated</option>
-                <option value="created">Date added</option>
-                <option value="title">Title</option>
-                <option value="author">Author</option>
+                <!-- Options derive from SORT_FIELD_LABELS — the same source the
+                     mobile sort sheet uses — so the two surfaces can't drift. -->
+                {#each Object.entries(SORT_FIELD_LABELS) as [value, label] (value)}
+                    <option {value}>{label}</option>
+                {/each}
             </select>
         </label>
         <div class="sort">