Owner round (2026-10-05), Slice D — the dock mechanics:
- INTENT-GATED FOLD: a ResizeObserver on the scroller's content stamps
the existing 400ms mute whenever the transcript GROWS — growth frames
(a live turn streaming under stick-to-bottom's chase) can never fold
the dock; and a fold now needs the distance AND stick-to-bottom's
isAtBottom agreeing the learner left. Fixes the generation churn
(dock disappearing and reappearing while the agent works). Shrinks
stamp nothing (the fold's own morph must not self-mute re-expand).
- MEASURED HEIGHT CAPS: the question (55dvh) and problem (40vh) areas
now cap at the available column (scroller clientHeight − 2rem,
re-measured on resize) via --dock-max-h — questions stretch to the
top bar with sensible padding and scroll internally only when
genuinely huge.
- The practice dock's statement area carries the 'Problem' eyebrow —
the quiz cards' label row, mirrored (dock and transcript card read
identically).
- The fold's CONTENT fade: a 160ms WAAPI fade/rise on the bar↔form
toggle — no remount, so the question form's state survives; the
shell height morph was already animated.
amosblomqvist
a5a554582e