run in background

Signed-off-by: Hadi <hadi@example.com>

home/system/caelestia-shell/default.nix

@@ -58,7 +58,13 @@
   ];
 
   # shell.json is managed by home-manager (read-only symlink) but caelestia
-  # needs to write to it at runtime: replace the symlink with a mutable copy
+  # needs to write to it at runtime: replace the symlink with a mutable copy.
+  # The stale .hm-backup must be removed before linkGeneration so HM can
+  # back up the runtime-modified shell.json without hitting a conflict.
+  home.activation.caelestiaCleanBackup = lib.hm.dag.entryBefore ["linkGeneration"] ''
+    $DRY_RUN_CMD rm -f "$HOME/.config/caelestia/shell.json.hm-backup"
+  '';
+
   home.activation.caelestiaWritableShellConfig = lib.hm.dag.entryAfter ["linkGeneration"] ''
     if [ -L "$HOME/.config/caelestia/shell.json" ]; then
       $DRY_RUN_CMD cp --remove-destination \

home/system/caelestia-shell/launcher.nix

@@ -154,6 +154,21 @@
           enabled = true;
           dangerous = false;
         }
+        {
+          name = "Run in background";
+          icon = "play_circle";
+          description = "Type and run any shell command in the background";
+          command = [
+            "ghostty"
+            "--title=run-bg"
+            "-e"
+            "bash"
+            "-c"
+            "printf 'Run: '; read -r cmd; [ -n \"$cmd\" ] && hyprctl dispatch exec \"$cmd\""
+          ];
+          enabled = true;
+          dangerous = false;
+        }
       ];
       dragThreshold = 50;
       enableDangerousActions = false;