chore: Clean up repository code and structure

- Removed commented packages: cura, parsec-bin, bottles, stremio, gimp, calibre
- Removed commented code: Java enable, low-latency kernel, ROCm packages, bridges
- Removed trailing whitespace across multiple files
- Fixed typo: Depreciated -> Deprecated in networking
- Removed unused desktop/gnome.nix module (not referenced)
- Removed systems/common-headless.nix (duplicates common.nix)
- Removed nixpkgs.config.allowBroken setting
- Added result, *.swp, *~ to .gitignore
- Removed .clinerules file (deprecated, info in docs/agents.md)
- Updated docs/agents.md changelog with cleanup details

systems/labrizor.nix

@@ -3,7 +3,7 @@
 {
 
   networking.hostName = "labrizor";
-  
+
   fileSystems."/" =
     { device = "/dev/disk/by-partlabel/primary";
       fsType = "btrfs";
@@ -23,14 +23,5 @@
 
   services.xserver.videoDrivers = [ ];
 
-#  hardware.graphics.extraPackages = with pkgs; [
-#    rocm-opencl-icd
-#    rocm-opencl-runtime
-#  ];
 
-#  networking.bridges = {
-#    "br0" = {
-#      interfaces = [ "eth0" ];
-#    };
-#  };
 }