With a range selected, Left and Right were moving one character from
the focus instead of collapsing to the selection start or end. Match
standard text-field behavior and keep Shift+arrows extending.
Closes#12207
Click caret placement only moved the selection and never refreshed
current styles, so the Design tab kept showing the previous fill and
typography. Place the caret through place_caret_from_position so
StylesChanged is emitted like keyboard navigation.
Closes#12195
* ♻️ Share text layout paragraphs across modifier clones
Store Skia paragraphs in Rc so TextContentLayout::clone keeps the
cached layout for rotate/pan modifiers. Add layout.clear() and treat
needs_update as paragraphs-empty only.
* ⚡ Reuse cached Skia paragraphs when painting text
Add try_paint_from_layout_cache to paint from TextContent.layout when
versions match, skipping ParagraphBuilder rebuild and layout on each
frame. Wire into the layered text path for plain fills without strokes
or effects.
* ⚡ Paint plain text directly onto Current
Extend can_render_directly for stroke-free text and skip the empty
save_layer in draw_text when no stroke-group opacity is set. Plain text
paints into Current without the Fills/Strokes blit.
* 🐛 Fix dropdown shown Mixed Font Families for same family with different variant
* 🐛 Fix variants dropdown appearing blank on mixed variants but same family
* ✨ Add playwright test for mixed font families/variants
