Adds Android unit coverage for raw CP1252 printer output used by admission labels, including an accented ZPL label and exact byte assertions.\n\nValidated:\n- targeted PrinterEncodingTest passes\n- Android assembleDebug and assembleRelease pass\n- package build, lint, and formatting checks pass\n\nThe full verify:android task still has two pre-existing InsecureCertificateAllowlistTest failures caused by the JVM JSONArray mock; the printer suite passes.