Supered v0.6.1

Global Codex submission packet release.\n\nHighlights:\n- Added docs/codex-global-listing-submission.md with reviewer-ready listing copy, install steps, verification evidence, security notes, and privacy details.\n- Added Supered-owned privacy and terms pages under the public site.\n- Updated Codex plugin metadata to point at the Supered privacy and terms pages.\n- Extended Codex plugin verification to check the global submission packet and compliance URLs.\n- Extended site verification to load the privacy and terms pages in Chromium.\n\nVerification passed:\n- npm test\n- npm run validate\n- npm run smoke-install\n- npm run verify-package\n- npm run verify-codex-plugin\n- npm run verify-site\n- npm audit --audit-level=high\n- clean-temp Codex install from local marketplace layout