sway: allow config reloading

hosts/common/programs/sway/default.nix

@@ -162,6 +162,11 @@ in
       "/sys/dev/char"
       "/sys/devices"
     ];
+    sandbox.extraHomePaths = [
+      # bind ALL of ~/.config/sway into the sandbox instead of just the individual configs.
+      # this way `swaymsg -- reload` can work even if the fd for ~/.config/sway/config changes.
+      ".config/sway"
+    ];
     sandbox.extraConfig = [
       "--sane-sandbox-keep-namespace" "pid"
     ];