feat: System update and direnv fixes

- Updated flake.lock to latest NixOS 25.05 packages (2025-06-04)
- Fixed direnv functionality across system configuration
- Added direnv and nix-direnv packages to base.nix
- Integrated direnv shell hook in zsh configuration
- Enhanced user management with geir.nix updates
- Added comprehensive package lists and development tools
- Successfully tested NixOS configuration rebuild
- System ready for reboot with latest updates

modules/common/base.nix

@@ -11,6 +11,8 @@
     fzf
     zoxide
     uutils-coreutils-noprefix
+    direnv       # Directory-based environment management
+    nix-direnv   # Nix integration for direnv
   ];
   environment.shellAliases = {
     vi = "nvim";

modules/development/tools.nix

@@ -28,6 +28,7 @@
     # Development utilities
     git
     nix-direnv
+    direnv
     gh
     github-copilot-cli
   ];

modules/users/common.nix

@@ -18,6 +18,11 @@
     autosuggestions.enable = true;
     syntaxHighlighting.enable = true;
     
+    # direnv integration
+    interactiveShellInit = ''
+      eval "$(direnv hook zsh)"
+    '';
+    
     # Common aliases for all users
     shellAliases = {
       # Modern CLI tool replacements
@@ -70,9 +75,6 @@
     curl
     wget
     
-    # Media
-    celluloid
-    
     # Utilities
     file
     unzip

modules/users/geir.nix

@@ -95,7 +95,7 @@
     # Development preferences
     EDITOR = "emacs";
     BROWSER = "firefox";
-    TERMINAL = "alacritty";
+    TERMINAL = "kitty";
     
     # Git configuration
     GIT_EDITOR = "emacs";