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* Sprint 1: bidi and Arabic typography engine fonts: ISO 15924 script and a:latin/a:ea/a:cs slot classification; shape_range shapes an item with the whole paragraph as HarfRust pre/post context, explicit script/language/direction, glyphs kept in visual order; per-grapheme-cluster fallback (slot face, theme script font, OS cascade families, bundled craft-fonts face); GDEF ligature carets. text: UAX #9 levels for the whole paragraph (a:pPr/@rtl), itemization by level, script, face and shaping style (paint-only changes no longer split words), logical line breaking at cluster boundaries, per-line L1/L2 reordering (L4 mirroring by the shaper); RTL start edge and bullets, justLow kashida; caret Affinity, logical/visual movement, bidi hit testing and selection as the union of visual boxes. model/pptx: theme a:font script fonts and algn="justLow" round-trip. engine: format.rtl (Right-to-Left Text Direction), justifyLow align. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Fonts: the bundled script face comes before installed fonts; no Microsoft family names Arabic, Hebrew, Thai and Devanagari clusters try the craft-fonts face first, so every machine draws the same, then openly licensed or OS-native installed families, then any installed face. Installed Microsoft faces are still used through that scan, but not named (AGENTS.md §1.1). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Tayeb <tayeb@192.168.11.179> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>