fix(stasis): correct the unit path and pick up the config fix

The actions run as `sh -lc`, which sources /etc/profile and therefore resolves
swaylock and brightnessctl on its own; only a shell has to be present. niri,
pactl and notify-send are spawned directly, past the shell, so those stay. bash
resolved to bashInteractive, which pulled readline in for nothing.

The moonarch bump carries the suspend inhibit knobs, without which stasis
discarded the seeded config on every start.

modules/services.nix

@@ -103,10 +103,12 @@
     partOf = [ "graphical-session.target" ];
     after = [ "graphical-session.target" ];
     wantedBy = [ "graphical-session.target" ];
-    # stasis runs its actions as `sh -lc <command>` and spawns niri and pactl
-    # directly, all resolved against this PATH. pulseaudio is here for pactl
-    # alone; it stays off systemPackages, see modules/desktop.nix.
-    path = with pkgs; [ bash swaylock brightnessctl niri pulseaudio ];
+    # stasis runs the configured actions as `sh -lc`, so those resolve through
+    # /etc/profile and need nothing here beyond a shell to start. niri, pactl
+    # and notify-send it spawns directly, past the shell, and pactl is why
+    # pulseaudio appears at all — it stays off systemPackages, see
+    # modules/desktop.nix.
+    path = with pkgs; [ bashNonInteractive niri pulseaudio libnotify ];
     serviceConfig = {
       Type = "simple";
       ExecStart = "${lib.getExe pkgs.stasis}";