The toggle shows the panel-right open glyph while the panel is open and
the close glyph while it is shut, both mirrored so the chevron points the
way the panel moves on a click. Docked and open, the toggle keeps the
panel's width as its right margin, so it sits beside the panel's leading
edge and travels with it (200 ms, none under reduced motion). Labels and
aria-expanded are unchanged.
The Coach page cancelled the shell's container padding with negative
margins, so <main> kept its reserved scrollbar gutter and painted a dead
strip to the right of the panel on classic-scrollbar platforms. The shell
now renders /coach full bleed: no centred container, no padding and no
reserved gutter, and the page fills what <main> leaves below the top bar.
A refusal card (shared record, module off) keeps the padded frame.
The panel header takes one 12 px inset with a gap of 8 between title and
icons, a text-lg title, and 28 px icon buttons beside a pointer (44 px on
touch). Conversation rows take the control radius and a 36 px pointer
floor.
/coach?settings=data opened the conversations sheet from the first
render. The server and hydration renders do not know the viewport and
take the narrow layout, so on a desktop the sheet was open until the
docked panel replaced it; only the batching of the hydration re-render
kept it off the screen. The deep link now opens the sheet only once
hydrated on a viewport that does not dock the panel; on a docked one the
panel is revealed as before.
The desktop deep-link spec records every mount of the sheet from the
first byte and expects none; a phone deep-link spec covers the sheet
path and serves as the watcher's positive control.
Measures that the thread and composer keep the same width with the panel
open and closed, that the choice survives a reload, Escape and focus
return for the panel, the sheet and the settings overlay, rename and
delete with undo from the row menu, the settings deep link, and axe on the
panel and the overlay in both themes. Screenshots are attached to the
report.
Marc-André Bombeck