Fetch.enable was setting page.intercept_enabled to false and clearing
intercept_block_patterns, which caused should_block_url() to always
return false. As a result, Fetch.requestPaused events were never
triggered and Playwright's page.route() handlers never executed.
- Set intercept_enabled to true (was false)
- Propagate URL patterns to page.intercept_block_patterns (was cleared)
Fixes#49
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>