Migrate from Karma/Mocha/Chai to Vitest with Playwright browser mode

.github/workflows/nodejs.yml

@@ -11,12 +11,13 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 24
           cache: npm
       - name: npm install, build, and test
         run: |
           npm install
           npm run build
+          npx playwright install chromium
           npm test
         env:
           CI: true

.github/workflows/publish-pages.yml

@@ -16,7 +16,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 24
           cache: npm
 
       - run: npm install

.github/workflows/publish.yml

@@ -15,10 +15,11 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 22
+          node-version: 24
           registry-url: https://registry.npmjs.org/
           cache: npm
       - run: npm ci
+      - run: npx playwright install chromium
       - run: npm test
       - run: npm version ${TAG_NAME} --git-tag-version=false
         env:

.gitignore

@@ -1,3 +1,4 @@
 node_modules/
 dist/
 pages/hotkey
+test/__screenshots__