fix: start apps in subprocess

sims/modules/launcher/apps.py

@@ -1,3 +1,7 @@
+import re
+import shlex
+import subprocess
+
 from fabric.utils.helpers import DesktopApp, get_desktop_applications
 from fabric.widgets.box import Box
 from fabric.widgets.image import Image
@@ -9,6 +13,8 @@ from .base import FuzzyMenu
 
 ICON_SIZE = 32
 
+_FIELD_CODE_RE = re.compile(r"^%[fFuUickdDnNvm]$")
+
 
 class AppProvider:
     def items(self) -> list[DesktopApp]:
@@ -39,6 +45,14 @@ class AppProvider:
         return Box(name="slot-box", orientation="h", spacing=10, children=children)
 
     def activate(self, item: DesktopApp) -> None:
+        # Detach from sims's session so apps survive sims shutdown.
+        if item.command_line:
+            argv = [
+                t for t in shlex.split(item.command_line) if not _FIELD_CODE_RE.match(t)
+            ]
+            if argv:
+                subprocess.Popen(argv, start_new_session=True)
+                return
         item.launch()