mslicer: ship it! and stop shipping cassini, since it didnt seem to work

hosts/common/programs/assorted.nix

@@ -223,11 +223,12 @@ in
 
     pcTuiApps = declPackageSet [
       "aerc"  # email client
-      "cassini"  # Elegoo printer control. need here especially, for opening firewalls.
+      # "cassini"  # Elegoo printer control. need here especially, for opening firewalls.
+      "mslicer"  # TODO: upstream, and then move this to the phone-case-cq repo
       # "msmtp"  # sendmail
       # "offlineimap"  # email mailbox sync
       # "sfeed"  # RSS fetcher
-      "uvtools"  # TODO: upstream (then i can move this to the phone-case-cq repo; i don't need it more broadly than that).
+      # "uvtools"
       "visidata"  # TUI spreadsheet viewer/editor
       "w3m"  # web browser
     ];
@@ -866,6 +867,8 @@ in
       "records/finance/cryptocurrencies/monero"
     ];
 
+    mslicer.sandbox.method = null;  #< TODO: sandbox
+
     nano.sandbox.autodetectCliPaths = "existingFileOrParent";
 
     netcat.sandbox.net = "all";