process_command (close and minimize of the foreground window, four raise
calls) and monitor_reconciliator (four minimize calls) now call
backend().close/minimize/raise. WindowsBackend runs Window::close,
minimize and raise unchanged (minimize still leaves komorebi-bar alone).
docs/dev/backend-switch.md now holds the full table of what is switched
and what is left, including why the queries (window_rect,
foreground_window, cursor_pos, monitors) were NOT switched: each would drop
an error that callers use or report, or fabricate a default.
BEHAVIOUR: a dead window is skipped by an IsWindow check first; minimize
results are ignored as before. e2e gate needed: commands, monitor
reconciliation (monitor_reconciliator), lifecycle. Verified: Windows clippy
-D warnings via tools/fast-check PASS; e2e not run.
Switch the 40 Window::focus(mouse_follows)? call sites in process_event,
process_command, workspace, window_manager, focus_manager and the
stackbar click to backend().focus(WindowId::from_hwnd(..), mouse_follows).
WindowsBackend::focus runs Window::focus, so the deferral while a window
slides in, the already-foreground shortcut and the cursor centring are
unchanged. animation/transition.rs:534 stays on Window::focus (it is the
code Window::focus defers to). docs/dev/backend-switch.md records what is
switched.
BEHAVIOUR: a dead window now fails early with Error::WindowGone (before:
the Win32 error from raise_and_focus_window) and a failed focus of a window
that died meanwhile reports WindowGone; every caller uses ? or ignores the
result. e2e gate needed: commands, focus, focus_follows_mouse, stacking,
workspaces, lifecycle. Verified: Windows clippy -D warnings via
tools/fast-check PASS; e2e not run.
LGUG2Z