vibed improved gc

nixos/modules/profiles/workstation.nix

@@ -1,4 +1,12 @@
-{ pkgs, pkgs-unstable, ... }:
+{ pkgs, pkgs-unstable, lib, ... }:
+let
+  commands = import ../../../lib/commands.nix { inherit pkgs; };
+  systemNotify = commands."system-notify";
+  notify = urgency: title: body:
+    "${systemNotify} ${lib.escapeShellArgs [ urgency title body ]}";
+  notifyFailure = title: service:
+    "${systemNotify} ${lib.escapeShellArgs [ "critical" title ]} \"${service} ended with: $SERVICE_RESULT\"";
+in
 {
   boot = {
     plymouth = {
@@ -53,6 +61,34 @@
     8888
   ];
 
+  systemd.services = {
+    nixos-upgrade = {
+      preStart = lib.mkBefore ''
+        ${notify "normal" "System update started" "Updating flake inputs and preparing the NixOS switch."}
+      '';
+      postStop = ''
+        if [ "$SERVICE_RESULT" = "success" ]; then
+          ${notify "normal" "System update finished" "The automated NixOS update completed successfully."}
+        else
+          ${notifyFailure "System update failed" "nixos-upgrade.service"}
+        fi
+      '';
+    };
+
+    nix-gc = {
+      preStart = ''
+        ${notify "normal" "Garbage collection started" "Cleaning old Nix generations and unreferenced store paths."}
+      '';
+      postStop = ''
+        if [ "$SERVICE_RESULT" = "success" ]; then
+          ${notify "normal" "Garbage collection finished" "Nix store garbage collection completed successfully."}
+        else
+          ${notifyFailure "Garbage collection failed" "nix-gc.service"}
+        fi
+      '';
+    };
+  };
+
   environment = {
     systemPackages = [
       pkgs-unstable.discord