Split-screen panels

Clicking a relation chip, or a row in a list, opens that record in a panel beside the page you’re on rather than replacing it. Desktop only (md breakpoint and above) — on a narrower screen, or with a modifier held (⌘/Ctrl/Shift-click, middle-click), it falls through to an ordinary navigation or a new tab, exactly like before this existed.

Two ways a panel opens

From inside a record, clicking a relation stacks a new panel. Click another relation inside that panel and it stacks again — each click pushes one more panel onto the right.
From a list — My Work, or any table/board/gallery/list/feed/timeline view — clicking a row swaps the one open panel’s record in place. This is the queue-triage case: walking down a list reuses the same panel rather than leaving a rail behind for every row you passed.

Only one panel stays expanded at a time either way. Opening or expanding a second one docks the previously-active panel to a peek-rail on the right — a thin strip showing its name, click to bring it back.

Walking a queue with the keyboard

In My Work, once a record is open in the panel, ↑ / ↓ move to the next or previous item in the same list and swap the panel to show it — no re-navigation, no lost scroll position. The arrows are only armed while a record is open, and they never hijack input: typing in a field, a filter box, or any editable element takes the keystroke instead.

Controls, and they’re the same everywhere

Every pane — the original page you were on and every opened panel — carries the same three controls:

Collapse — dock the pane to its own peek-rail. The original page rails to the left; panels always rail to the right, so collapsing never jumps a pane across the screen.
Maximize / Restore — one pane fills the whole split area; every other participant docks to its rail. Restore brings back the shared side-by-side pair.
Close — removes a panel entirely. Closing the original page’s own pane instead restores it (there’s always something on the left).

A list surface (My Work, a database view) gets a thin control strip with the same three buttons only while a split is open — with nothing open it renders exactly as it always did, no extra chrome.

The divider between the two panes is draggable — drag to resize, double-click or press Home to reset to an even split, or focus it and use the arrow keys.

What this doesn’t cover yet

Search results and My Work’s own visual redesign are separate, unshipped work — this page describes the split-panel mechanism itself, not either of those.