Update flake to unstable, add chromium/opencode modules, update emacs config

nixos/configuration.nix

@@ -113,17 +113,17 @@
     git
     tmux
     killall
+    brightnessctl
   ];
 
   fonts.enableDefaultPackages = true;
 
   services.upower.enable = true;
-  programs.light.enable = true;
 
   systemd.targets.sleep.enable = false;
   systemd.targets.suspend.enable = false;
   systemd.targets.hibernate.enable = false;
   systemd.targets.hybrid-sleep.enable = false;
 
-  system.stateVersion = "25.05"; # Did you read the comment?
+  system.stateVersion = "25.11"; # Did you read the comment?
 }

nixos/lauretta-hardware-configuration.nix

@@ -46,12 +46,11 @@
 
   #Oh my god disable sleep on lid closed
   services.logind.settings.Login.HandleLidSwitchExternalPower = "ignore";
-  systemd.sleep.extraConfig = ''
-    [Sleep]
-    AllowSuspend=yes
-    AllowHibernation=no
-    AllowSuspendThenHibernate=no
-  '';
+  systemd.sleep.settings.Sleep = {
+    AllowSuspend = true;
+    AllowHibernation = false;
+    AllowSuspendThenHibernate = false;
+  };
   systemd.targets.sleep.enable = false;
   systemd.targets.suspend.enable = false;
   systemd.targets.hibernate.enable = false;