Public Access
ONE PRESS WAS DOING TWO JOBS. A group card was the only place a group could be selected — it is what EDIT and DELETE aim at — and it was also the control that narrowed the grid to that group. So there was no way to name a group in order to rename it without every host outside it leaving the screen at the same moment, and no way back except a SHOW ALL button that appeared beside the heading. Two gestures instead. A click selects and does nothing else; a double-click opens, which is what the host cards below already do to get a shell and what the transfers screen's directories already do to go inside one. The grid now has one vocabulary rather than one per list. The gesture is wired in the code-behind beside the host one, and guarded the same way: a double-click on the space around the cards must not open whichever group happened to be selected. THE CARDS ARE ONE LEVEL NOW, not every group in the keychain. Groups nest, and drawing all of them flat was the only honest thing to do while a card was a filter — a filter nobody can see is a filter nobody can turn off. Once opening one became navigation the cards became its contents, and VisibleGroups is that level beside Groups the way VisibleHosts sits beside Hosts. Groups itself is untouched: it is what every lookup reads and what the phone's headings are built from, and the phone binds none of the new members. Which is what the trail is for. A level with no name and no way out is a grid that has quietly hidden things, so a breadcrumb sits above the cards — drawn exactly as the transfers screen draws a directory path, same flat crumbs and same separator, because it is the same control answering the same question and a window with two breadcrumbs that look different has two ideas of what a path is. The first crumb is always there and always goes back to every host, which is what SHOW ALL was; that button went with it, because a control that only says "stop" beside a trail that says where you are is a second control for one job, and this one also gets you back one level rather than all the way. EDIT AND DELETE AIM AT GroupTarget: the selected card, or the open group when no card is selected. Without the fallback a group with nothing inside it could be opened and then never edited, because opening a group is exactly what takes its own card off the screen. It is also what a file manager does — act on the selection, and on the current folder when there is none — and the pair is now hidden with nothing to act on rather than shown doing nothing. A DANGLING PARENT AND A CYCLE BOTH HAD TO END UP SOMEWHERE REACHABLE. Neither is prevented: a parent id may point at a group deleted on another machine, and two clients can each re-parent A under B and B under A while offline, which no merge can see because the pointer is inside the payload. EffectiveParents promotes both to the outermost level, which is the same degradation the resolver's visited set produces for inheritance. The repair for either is the group's own editor and the editor is opened from its card, so a group drawn nowhere would be a broken state with the fix locked inside it. Three tests in HostGridTests: the split rule through the properties the cards bind, the pointer gesture itself in two windows so that "one press still only selects" is asserted separately from the pair, and a nested group opened, emptied of cards and walked back out of one level. The last presses the trail as it is actually rendered rather than calling the command, because a crumb reaches the vault through a $parent binding — a string that compiles whether or not it resolves, and would otherwise leave a row of buttons that do nothing. 85 layout tests and 234 shell-flow tests pass. Manual-checks 3.2, 7.6 and 7.7 follow the new gestures, and 3.2a and 3.4a are new: nesting, and the two states above, both of which need two machines and neither of which headless Avalonia can reach.