- Added @tailwindcss/upgrade support, new height/line‑height utilities, and transition handling for display, visibility, content‑visibility, overlay, and pointer‑events.
- Fixed class‑scanning exclusions (.geojson, .db), shadow suggestion hiding, @utility formatting, color‑mix opacity handling, and made PostCSS import errors recoverable.
- Improved upgrade process: bumped Tailwind dependencies, prevented adding variants starting with @, and skipped formatting unchanged stylesheets.