🧪 Add preview command to static-site SDK E2E tests (#185)

## Summary

- Adds `vizzly preview` step to the static-site SDK E2E workflow
- Uploads the test-site as a preview after cloud mode tests complete
- Tests the preview command in real CI conditions

## Test plan

- [ ] CI runs the static-site SDK E2E job
- [ ] Preview upload step succeeds after `vizzly run`
- [ ] Preview URL is generated and linked to the build

Author: Robdel12

.github/workflows/sdk-e2e.yml

@@ -248,6 +248,12 @@ jobs:
           VIZZLY_COMMIT_MESSAGE: ${{ github.event.pull_request.head.commit.message || github.event.head_commit.message }}
           VIZZLY_COMMIT_SHA: ${{ github.event.pull_request.head.sha || github.event.head_commit.id }}
 
+      - name: Upload preview
+        working-directory: ./clients/static-site
+        run: ../../bin/vizzly.js preview ../../test-site
+        env:
+          VIZZLY_TOKEN: ${{ secrets.VIZZLY_STATIC_SITE_CLIENT_TOKEN }}
+
   # Ember SDK
   ember:
     name: Ember SDK

clients/static-site/tests/sdk-integration.test.js

@@ -326,9 +326,9 @@ describe('Static-Site E2E with shared test-site', { skip: !runE2E }, () => {
       pool = createTabPool(browser, 2);
 
       let pages = [
-        { path: '/index.html', source: 'html' },
-        { path: '/features.html', source: 'html' },
-        { path: '/pricing.html', source: 'html' },
+        { path: '/', source: 'html' },
+        { path: '/features', source: 'html' },
+        { path: '/pricing', source: 'html' },
       ];
 
       let config = {