Transactions already opened in a panel next to the list. The panel just did not remember anything: a refresh lost it, Back left the page instead of closing it, and there was no way to send someone the thing you were looking at. This build fixes all of that and puts people in the same panel.
Everything you open has an address
Whatever is in the panel is now part of the page URL — ?peek= for a transaction, ?person= for a person. Refresh and it is still open, on the same list, at the same scroll position. Copy the address and send it, and whoever opens it lands on the same bill, subject to the same access rules as always.
Back now closes the panel rather than leaving the page, and the header has its own Back button that does the same thing without a trip to the browser chrome.
People open in the panel too
Clicking someone on the dashboard or in People used to take you to their page. It now opens them in the panel: balance, shared transactions, the lot. Their transactions open back into the panel, so you can follow a bill to a person to another of their bills and still be on the list you started from.
Names inside the panel — a line in a split, a comment, an entry in the activity log — behave the same way. ⌘-click, or Open on page in the header, still gets you the full screen.
Arrows through the list
With a transaction open, the header carries previous and next arrows that walk the list you opened from, in the order it is displayed. ↑ and ↓ do the same from the keyboard, and stand down while you are typing in a comment.
Drag it wider
The panel's left edge is a handle on desktop: drag it anywhere between 480 and 960 pixels, and the width is remembered for next time. Click the edge instead of dragging and the panel closes.
The panel is no longer a modal, so the list behind it stays live — scrollable, clickable, not dimmed. Escape closes the panel, except when you are typing, where the first press only leaves the field. On a phone nothing changes visually: the panel still takes the screen.
Also fixed
The highlight ring on the row you have open was drawn square, so it cut the corners of the first and last row in a card. It now follows the card's rounded edge.