Convert tests to Vitest with Playwright browser mode and update CI to Node 22/24

Co-authored-by: dgreif <[email protected]>

Author: Copilot

.github/workflows/node.js.yml

@@ -19,7 +19,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [20.x, 22.x]
+        node-version: [22.x, 24.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:

.github/workflows/publish.yml

@@ -15,7 +15,7 @@ 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