Support typed character and group readings through the shared ruby model.
Expose Chinese labels, presentation controls and selection guards without
changing Japanese controls or generating pronunciation.
Preserve complete source ranges for glyphs sharing a combining cluster.
Add pinned horizontal and vertical tone-mark fixtures and editor tests.
AI-assisted-by: GPT-6
Add named Chinese punctuation presets and a Korean keep-words mode for
horizontal and vertical layout. Preserve the saved spaces-only mode and
keep source offsets stable through safe emergency wrapping.
Apply bounded CJK spacing and justification, expose the new choices in the
sidebar, and document preset bounds and remaining release checks.
Verify renderer, frontend, common and exporter tests, both WASM builds,
and sample save/reload plus PNG, PDF and SVG exports. Existing CI failures
remain documented in the layout notes.
AI-assisted-by: GPT-6
