v13.0.0

Features

• Observer directives: :mount, :change, :intersect, :resize
• Web component boundaries: directives on custom elements are treated as prop setters, parent traversal stops at component boundary
• define-element integration
• :ref path refs and callback refs

Changes

• :value is now one-way state → DOM
• Use :change for DOM → state write-back
• Use :mount for setup/cleanup instead of lifecycle-style :ref
• :intersect and :resize handle their own modifiers

Fixes

• Fixed radio and select-multiple handling in :value
• Fixed style property filtering
• Caret preservation in :text

Improvements

• Faster clsx, class iteration, and sequence parse setup
• More tests for portal, fx, hidden, events, text, default attrs, forms, and custom elements
• Docs, recipes, and comparison updates for v13

Full Changelog: v12.4.17...v13.0.0