v2027.0.1

Fixed

• Updated the PDF export's libraries (DOMPurify 3.4.17, fflate 0.8.3) and the self-host server's Express dependencies (body-parser 2.4.0 and others) to versions without known security advisories

Added

• Appearance setting: Match system, Light or Dark. Firefox gives extension pages the system's light or dark setting rather than Firefox's own theme, so the popup and sidebar could disagree with the browser; now you can pick
• docs/STORE-CHECKLIST.md: what to check before each store upload, built from the Firefox, Edge, Opera and Chrome store policies
• SECURITY.md with what MeterX trusts and how to report privately, issue forms for bugs and features, and npm run check:docs, which checks the docs' sections, links, spelling and headings as part of npm test

Changed

• README rewritten around install, privacy and data, how a test works and a FAQ, with dark-mode images and live store user, download and star counts; CONTRIBUTING covers loading the extension in Firefox and the pull request rules