[docs]: sync docs-production w/ main

Merged
SE
11h ago
+24108-2915

Summary by cubic

Brings the production docs branch up to date with main ahead of the v4.3.0 SDK release.

  • Documents page.waitForFunction(), the getExtensionArchive() helpers, and the extensionCdpUrl / headers options on localBrowser.connect().
  • Updates the WebMCP launch flag for Chromium newer than 157 and the deployment guide's extension upload flow.
  • Adds the browse cloud search provider and mode flags and the new waitForFunction() migration entries.
  • Rewrites the evals README around the v4.3.0 run experience and rewrites the CLI/skill docs for search flags.