Translates flex, direction, wrap, align, justify, gap, padding,
margin, width-height, position, display, and overflow tests from
Ink. Adds trimLines mode and trailing-newline strip to test helper.
Fixes Box type for alignContent (space-between/around/evenly) and
alignSelf (stretch/baseline).
21 tests fail due to behavioral differences (overflow clipping,
percentage dimensions, relative position offsets, align-content
space-* variants). These represent real gaps to investigate.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Stores raw (untrimmed) frames internally. lastFrame() still trims
by default for backward compat. lastFrame({ raw: true }) returns
the untrimmed output for layout tests asserting exact widths.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Provides render() for integration testing — async with auto-flush,
trimmed frames, fake terminal with resize(), stdin.write() with
auto-flush, and auto-cleanup via afterEach.
Exports: render, cleanup, RenderResult, RenderOptions, Terminal
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Yunfei He