Zachary D. Rowitsch e0aae716b0 Add vertical-align support for inline-block elements ...

Inline-block elements now participate in vertical alignment within
inline formatting contexts. Previously, inline-blocks were positioned
at the parent's content origin regardless of their vertical-align
property. Now they are correctly repositioned based on CSS 2.1 §10.8.1
baseline calculation rules.

Key changes:
- Extended AtomicInline with vertical-align, baseline-offset fields
- Create positioning-only InlineFragment for each atomic inline
- Reposition inline-block LayoutBoxes after vertical alignment
- Compute baseline from last line box (or bottom margin edge)
- Made offset_layout_box pub(crate) for reuse across modules
- Skip atomic fragments in display list builder
- Comprehensive test coverage (23 new tests)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-06 17:00:04 -05:00

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