irisandClaude Fable 5.1
69525bd131
The defect P1a's screenshots found, and the one that mattered: `Rect::is_size_independent()` answered `true`. A `Rect` fills whatever region it is handed, so its content *is* the region -- and `draw_inner`'s fast path, which rewrites a widget's primitives with `r.outside(&from).within(®ion)` instead of redrawing it, cannot reproduce that once a region carries both `rel` and `abs`. What it looked like: a fenced code block's background kept the height of the provisional full-region draw `Span` does in its first phase, so one fence's panel covered every block below it and every row below that, with the text underneath laid out correctly. Likely the same cause as RUST.md's older "the composer bar's grey background is not drawn". Also here: a quote's bar is a `Stack` background behind padded text rather than a two-child `Span(Dir::RIGHT)` (one widget fewer and no provisional pass), and `transcript-ui`'s `transcript` example gains a row holding one of every block kind -- the fixture's own heading, paragraph, fence and table source, plus a list and a quote, which the fixture has neither of. docs/bench/p1a-2026-09-06/ has the pairs and docs/RUST.md's P1a box names what still differs. The iris half is from the desktop backend because this emulator cannot draw iris's glyphs at all (solid boxes, reproduced on the previous commit, with Compose drawing text correctly on the same AVD); both routes to Vulkan on this AVD were tried and both fail. Bench stream phase, assertions live, no abort: p50 53.0ms p90 108.6ms p99 132.0ms against 52.8/108.1/137.3 before -- unchanged. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>