fix(lighthouse): use staticDistDir, drop Playwright dependency

- lighthouserc.json: replace startServerCommand:npm-run-preview
  with staticDistDir:./dist so LHCI serves files directly
- CI workflow: remove Playwright/Chromium install step and
  LHCI_CHROME_PATH env var (LHCI bundles its own Puppeteer)
- LHCI now uses its built-in static server + bundled Chromium

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.github/workflows/ci.yml

@@ -57,13 +57,7 @@ jobs:
           cache: npm
       - run: npm ci
       - run: npm run build
-      - name: Install Chromium
-        run: |
-          npm install -g playwright
-          npx playwright install chromium
       - name: Run Lighthouse CI
-        env:
-          LHCI_CHROME_PATH: /home/runner/.cache/ms-playwright/chromium-1208/chrome-linux/chrome
         run: |
           npm install -g @lhci/cli
           lhci autorun

lighthouserc.json

@@ -1,7 +1,7 @@
 {
   "ci": {
     "collect": {
-      "startServerCommand": "npm run preview",
+      "staticDistDir": "./dist",
       "url": ["http://localhost:4173/"],
       "numberOfRuns": 1
     },