Implement modular Plasma taskbar pinning system

- Add modular pinning system using NixOS module options
- Each desktop module now defines its own pinned applications:
  * plasma.nix: konsole, dolphin, firefox, tigervnc
  * gaming.nix: steam, discord
  * office.nix: slack, signal, libreoffice-writer, libreoffice-calc
  * dev.nix: windsurf
  * media.nix: rustdesk
  * dnm.nix: tor-browser, kleopatra (moved from crypto.nix)
- Move Plasma config from user-specific to desktop module for consistency
- Rename crypto.nix to dnm.nix and update references
- All users with Plasma desktop get automatic taskbar pinning
- Applications only appear when their desktop modules are active

desktop/dev.nix

@@ -1,8 +1,12 @@
-{ config, pkgs, pkgs-unstable, ... }:
+{ config, pkgs, pkgs-unstable, lib, ... }:
 
 {
+  # Add this module's pinned applications
+  desktop.plasma.pinnedApps = [
+    "applications:windsurf.desktop"     # Windsurf IDE
+  ];
 
-environment.systemPackages = with pkgs; [
+  environment.systemPackages = with pkgs; [
    (python3.withPackages(ps: with ps; [ pandas requests python-dotenv pip uv ]))
   nodejs
   rpi-imager
@@ -15,4 +19,6 @@ programs.nix-ld.enable = true;
   # Android Development
   programs.adb.enable = true;
 
+
+
 }