Project windows only joined a tab group when merged explicitly or restored at startup; the macOS "Prefer tabs when opening documents" setting was never read, so opening another project or a workspace always created a separate window.
New project windows now follow that preference: with Always they join the active project window's tab group (forming one if needed) and are selected; with In Full Screen they do so only while the active window is full screen; with Manually they stay separate. This covers every path that creates a project window — Open, recent projects, workspaces, drag and drop, and opening from the command line or Finder — while LightEdit windows and restored groups keep their behaviour. New Workspace now opens through the same Open project in policy as Open Workspace, and a race when toggling full screen during the join is fixed.
Fixes#678
On Linux the window-state plugin restored the saved size before GTK's decorations and output scale had settled, so the saved physical inner size went through the creation-time CSD/scale conversion and drifted on every restart (52 px per axis under Mutter, the remembered size collapsing on other setups), and maximize transitions overwrote the remembered normal size.
Linux now builds project and settings windows hidden and restores them after the first configure, keeping the normal size apart from maximize, fullscreen and minimize, protecting it during transitions, and snapshotting each window before close instead of querying GTK during exit. The state file format is unchanged; macOS and Windows keep the plugin as before.
Verified under Mutter and Weston: three restarts at 1234×678, three maximized restarts followed by unmaximize, the settings window, several project windows across a full exit, and window groups all restore exactly. macOS restore is unchanged. Not run: GNOME on real hardware, mixed-DPI monitors, X11.
Fixes#594Fixes#636
Workspaces open several local project folders in one IDE session (File › New / Open / Manage Workspace…, or Attach when opening a project, which creates a workspace automatically for a plain project window). Member folders are the Project view roots and take part in indexing, Find in Files, Git, language servers, run configurations and builds; agent tasks choose which member they work in. Window › Merge All Project Windows groups project windows into one window with project tabs (switch, reorder, close, move to a new window), restored on reopen.
Closes#241Closes#198Closes#286