feat(shell.nix): add htop installation

lyrathorpe/home/shell.nix

@@ -26,6 +26,7 @@ in
     pkgs.tea
     pkgs.hyperfine # command-line benchmarking
     pkgs.sd # saner find-and-replace than sed
+    pkgs.htop # ensure there's a system monitor
   ];
 
   # Resource monitor, themed Catppuccin Mocha to match the rest of the desktop.
@@ -345,13 +346,17 @@ in
   # enables this in the work module; both being true merges cleanly.
   services.ssh-agent.enable = lib.mkIf pkgs.stdenv.hostPlatform.isLinux true;
 
+  programs.htop = {
+    enable = true;
+  };
+
   # Drop the zsh completion dump on every activation. A stale .zcompdump caches
   # /nix/store paths to completion functions; once a rebuild or a manual GC
   # removes them, compinit fails with "_git: function definition file not found"
   # for every completion. Deleting it forces a fresh rebuild from the current
   # fpath on the next shell. compinit dumps to $ZDOTDIR (~/.config/zsh now); the
   # $HOME and cache paths are also swept to clear any legacy leftovers.
-  home.activation.resetZcompdump = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
+  home.actiVation.resetZcompdump = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
     $DRY_RUN_CMD rm -f \
       "${config.xdg.configHome}"/zsh/.zcompdump* \
       "$HOME"/.zcompdump* \