sunshine config and todo_rollover script

hosts/mainframe/sway/headless.conf

@@ -29,6 +29,29 @@ exec systemctl --user import-environment WAYLAND_DISPLAY DISPLAY SWAYSOCK XDG_CU
 # though nobody is sitting at this machine. Without them the Desktop app
 # streams an empty screen with no way to open anything.
 set $mod Mod4
+
+# Floating, not tiling. Nobody sits at this machine and nothing here is a
+# workstation: the stream shows one thing at a time, usually Steam fullscreen.
+# Tiling only ever meant a dialog box stealing half the screen. Both criteria
+# are needed - app_id matches Wayland clients, class matches Xwayland ones,
+# and Steam is an X client.
+for_window [app_id=".*"] floating enable
+for_window [class=".*"]  floating enable
+
+# Title bars are the handle you grab with the mouse, so floating windows keep
+# a real border rather than the thin default.
+default_floating_border normal 2
+
+# Super+drag moves a window, Super+right-drag resizes it. Without this the
+# only way to move a window is the title bar, which a fullscreen app has none of.
+floating_modifier $mod normal
+
+# The stream forwards a mouse, so pointing and clicking is the primary way
+# around; these are for when the pointer is not enough.
+bindsym Alt+Tab       focus next
+bindsym Alt+Shift+Tab focus prev
+bindsym $mod+f        fullscreen
+
 bindsym $mod+Return exec kitty
 bindsym $mod+d      exec wofi --show drun
 bindsym $mod+Shift+q kill