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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/playwright.yml

@@ -10,13 +10,13 @@ jobs:
     - uses: actions/checkout@v5
     - uses: actions/setup-node@v5
       with:
-        node-version: lts/*
+        node-version: '24'
     - name: Install dependencies
       run: npm ci
     - name: Install Playwright Browsers
       run: playwright install --with-deps
     - name: Run Playwright tests
-      run: playwright test
+      run: npm run test:e2e
     - uses: actions/upload-artifact@v4
       if: ${{ !cancelled() }}
       with:

e2e/layers.spec.ts

@@ -12,6 +12,13 @@ test.describe('map layers', () => {
     })
     
     // Navigate with seed parameter
+    // NOTE:
+    // - We use a fixed seed ("test-seed") to make map generation deterministic for snapshot tests.
+    // - The resulting snapshots are platform-specific (Playwright stores them with suffixes such as
+    //   "-darwin", "-linux", "-win32").
+    // - Currently, only macOS ("-darwin") snapshots may be present in the repository. On other
+    //   platforms (Linux/Windows), you must generate/update the corresponding snapshots for the
+    //   tests to pass, or configure Playwright to use per-platform snapshot directories.
     await page.goto('/?seed=test-seed')
 
     const mapElement = page.locator('#map')
@@ -21,7 +28,6 @@ test.describe('map layers', () => {
     await expect(mapElement.locator('#terrs')).toBeAttached({ timeout: 30000 })
     await expect(mapElement.locator('#labels')).toBeAttached()
     await expect(page.locator('#loading')).toBeHidden({ timeout: 30000 })
-    await page.waitForTimeout(1000)
   })
 
   // Ocean and water layers