feat(clipboard): add cross-platform clipboard support

Install `wl-clipboard` on NixOS for Wayland clipboard integration.
Implement a platform-aware clipboard command, using `pbcopy` on macOS and `wl-copy` on Linux.
Update `lumen` commands to utilize this new cross-platform clipboard logic.

Author: DivitMittal

common/hosts/nixos/misc.nix

@@ -1,6 +1,7 @@
 {
   lib,
   config,
+  pkgs,
   ...
 }: let
   inherit (lib) mkDefault;
@@ -18,4 +19,12 @@ in {
       isNormalUser = true;
     };
   };
+
+  environment.systemPackages = lib.attrsets.attrValues {
+    inherit
+      (pkgs)
+      bluez # bluetooth protocol
+      wl-clipboard
+      ;
+  };
 }

home/tty/vcs/git/ancillary.nix

@@ -2,8 +2,16 @@
   pkgs,
   config,
   lib,
+  hostPlatform,
   ...
-}: {
+}: let
+  clipboardCmd =
+    if hostPlatform.isDarwin
+    then "pbcopy"
+    else if hostPlatform.isLinux
+    then "${pkgs.wl-clipboard}/bin/wl-copy"
+    else "cat >/dev/null";
+in {
   home.packages = lib.attrsets.attrValues {
     inherit
       (pkgs)
@@ -137,14 +145,14 @@
         {
           key = "<c-l>";
           context = "files";
-          command = "lumen draft | tee >(pbcopy)";
+          command = "lumen draft | tee /dev/tty | ${clipboardCmd}";
           loadingText = "Generating message...";
           outupt = "popup";
         }
         {
           key = "<c-k>";
           context = "files";
-          command = ''lumen draft -c {{.Form.Context | quote}} | tee >(pbcopy)'';
+          command = "lumen draft -c {{.Form.Context | quote}} | tee /dev/tty | ${clipboardCmd}";
           loadingText = "Generating message...";
           outupt = "popup";
           prompts = [