refactor(comms): migrate tgt to flake input

Migrate telegram-tui (tgt) from custom package overlay to direct flake input for better maintainability and upstream tracking. Add tgt flake input and update home/comms/misc.nix to use inputs.tgt instead of pkgs.custom.tgt.

Author: DivitMittal

flake.lock

@@ -330,6 +330,12 @@
         flake-utils.follows = "flake-utils";
       };
     };
+    tgt = {
+      url = "github:FedericoBruzzone/tgt";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+      };
+    };
     pkms = {
       url = "github:DivitMittal/pkms";
       flake = false;

flake.nix

@@ -1,13 +1,12 @@
 {
   lib,
   pkgs,
+  inputs,
+  hostPlatform,
   ...
 }: {
   home.packages = lib.attrsets.attrValues {
-    inherit
-      (pkgs.custom)
-      tgt # Telegram TUI
-      ;
+    telegram-tui = inputs.tgt.packages.${hostPlatform.system}.default;
     inherit
       (pkgs)
       gomuks # Matrix client TUI

home/comms/misc.nix

@@ -71,5 +71,6 @@
       if hostPlatform.isDarwin
       then pkgs.brewCasks.element
       else pkgs.element-desktop;
+    #else null;
   };
 }