v1.2.1

Changes

• Fix: UI-size toggle contrast in the forum modal — now uses Flarum's own --button-primary-bg / --button-primary-color (and --button-bg / --button-color) variables instead of a hardcoded white, so the active button stays readable on any primary color.
• Improve: Header control placement — moved before the profile block. For logged-in users it sits immediately to the left of the avatar; for guests it sits to the left of the Sign Up / Log In buttons without splitting them.
• Security (defense in depth): Clamp the font scale to 100–150 and whitelist the UI value server-side in serializeToForum; clamp on save in the admin page; remove the only innerHTML usage in favor of textContent.
• Cleanup: Remove dead PSR-4 autoload for the non-existent src/ directory.