Supered v0.6.2

Plugin logo sizing release.\n\nHighlights:\n- Added assets/supered-plugin-logo.svg, a tight-cropped plugin logo that fills the Codex marketplace tile more clearly.\n- Updated the Codex plugin manifest and public marketplace mirror to use the new logo asset.\n- Kept 1.svg unchanged for the website and source logo.\n- Extended Codex plugin verification to require the dedicated plugin logo asset.\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