Connects to browserless over CDP (playwright-core), extracts article
content with Defuddle/JSDOM, renders it through buildCleanHtml, and
prints a PDF on a second page. Adds an in-browser request filter as a
second line of SSRF defense against redirects to private/localhost
hosts, on top of assertPublicUrl's DNS check.
Integration test is gated by RUN_PDF_INTEGRATION=1 (describe.runIf) so
it is skipped in a normal npm run test and only runs against a real
browserless instance.
admins