feat: Complete deploy-rs integration with status monitoring

✅ Completed Tasks:
- Task 6: Successfully tested deploy-rs on all machines (grey-area, reverse-proxy, congenital-optimist)
- Task 7: Added deploy-rs status monitoring to lab tool

🔧 Infrastructure Improvements:
- Added sma user to local machine for consistent SSH access
- Created shared shell-aliases.nix module to eliminate conflicts
- Enhanced lab status command with deploy-rs deployment info
- Added generation tracking, build dates, and uptime monitoring

🚀 Deploy-rs Status:
- All 4 machines successfully tested with both dry-run and actual deployments
- Automatic rollback protection working correctly
- Health checks and magic rollback functioning properly
- Tailscale connectivity verified across all nodes

📊 New Status Features:
- lab status --deploy-rs: Shows deployment details
- lab status -v: Verbose SSH connection info
- lab status -vd: Combined verbose + deploy-rs info
- Real-time generation and system closure information

The hybrid deployment approach is now fully operational with modern safety features while maintaining legacy compatibility.

modules/users/common.nix

@@ -5,6 +5,9 @@
   pkgs,
   ...
 }: {
+  imports = [
+    ./shell-aliases.nix
+  ];
   # Common user settings
   users = {
     # Use mutable users for flexibility
@@ -26,28 +29,6 @@
       eval "$(direnv hook zsh)"
     '';
 
-    # Common aliases for all users
-    shellAliases = {
-      # Modern CLI tool replacements (basic ones moved to base.nix)
-      "ll" = "eza -l --color=auto --group-directories-first";
-      "la" = "eza -la --color=auto --group-directories-first";
-      "tree" = "eza --tree";
-
-      # Git shortcuts (basic ones moved to base.nix)
-
-      # System shortcuts (some moved to base.nix)
-      "top" = "btop";
-
-      # Network
-      "ping" = "ping -c 5";
-      "myip" = "curl -s ifconfig.me";
-
-      # Safety
-      "rm" = "rm -i";
-      "mv" = "mv -i";
-      "cp" = "cp -i";
-    };
-
     # Common environment variables
     sessionVariables = {
       EDITOR = "emacs";