irisandClaude Fable 5.1
7e7cbb5402
P1b (docs/RUST.md). `transcript-ui/src/tool.rs` draws a card per tool call and a group per run: collapsed, a card is its name and the one-line summary `parse_tool_input` derives; open, it is the description, the input (highlighted, on the verbatim surface) and the output, capped with a "Show all N lines". A run is one surface with a heading and a chevron bar at its foot, so it closes from either end. Three things worth knowing. **A collapsed card lays out its summary line and nothing else.** The fixture's tool outputs are tens of kilobytes and a collapsed card never builds a widget for one -- `collapsed_cards_shape_only_their_summary_ lines` opens a three-card group over 88 kB of output each and asserts the text-shape count equals the same group's over three bytes (17 either way; 17 against 20 when the discipline is deliberately broken, so the test is real). **A result arriving replaces one card.** `ToolRow::apply_calls` is the group's half of `RowBlocks::apply_delta`'s rule, and `build_row` now hands back one `TailRow` -- blocks for a message, cards for a run -- rather than two mechanisms chosen at each call site. **Every tap is a tap**: `GestureOutcome::Tapped` out of the `DragArbiter` `Selection` already owns, so a drag that started on a card scrolls the transcript instead of opening it. Three defects found by looking at the render, all recorded with their repro in docs/IRIS_TODO.md: a `Span` of padded children inside another `Span` places them a slot out of step (worked around by building the group as one span, which costs the 4dp inset); `scrollable_on(Axis::X)` on a non-editable text draws nothing, so a card's command is clipped rather than pannable; and `NotoSans-Regular` has no U+25B8/25BE/25B4 at all, so the expander mark is set in the monospace face. Screenshots: docs/bench/p1b-2026-09-06/. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>