chore(node): move repo tooling to node 24

Align local version markers and GitHub Actions with Node 24, switch the default test entrypoint to the maintained Vitest runner, and replace pnpm-incompatible npm helpers in repo scripts.

This also removes the obsolete AVA plus esm path and excludes disabled test fixtures from generic Vitest discovery so CI reflects the supported test surface.

.github/workflows/run-ava-tests.js.yml

@@ -1,9 +1,8 @@
-# This workflow will do a clean install of node dependencies, build the source code and run tests across different versions of node
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
-
-name: Run Ava Tests
+# This workflow validates the Node 24 toolchain on GitHub-hosted runners.
+name: Run Node 24 Checks
 
 on:
+  workflow_dispatch:
   push:
     branches: [ master ]
   pull_request:
@@ -16,18 +15,24 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x, 15.x]
+        node-version: [24.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
+    - name: Setup PNPM
+      uses: pnpm/action-setup@v4
+      with:
+        version: 10.12.1
+        run_install: false
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v2
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ matrix.node-version }}
+        cache: pnpm
     - run: |
         touch .env
         echo ${{ secrets.GH_ENV }} >> .env
-    - run: npm ci
-    - run: npm run generate
-    - run: npm test
+    - run: pnpm install --frozen-lockfile
+    - run: pnpm build
+    - run: pnpm test