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/sma.nix

@@ -76,33 +76,12 @@
     autosuggestions.enable = true;
     syntaxHighlighting.enable = true;
 
-    # Admin-focused aliases
+    # Admin-specific aliases (common ones in shell-aliases.nix)
     shellAliases = {
-      # System management (use current system configuration)
-      "rebuild" = "sudo nixos-rebuild switch";
-      "rebuild-test" = "sudo nixos-rebuild test";
-      "rebuild-boot" = "sudo nixos-rebuild boot";
-      "rebuild-flake" = "cd /tmp/home-lab-config && sudo nixos-rebuild switch --flake .";
-      "rebuild-flake-test" = "cd /tmp/home-lab-config && sudo nixos-rebuild test --flake .";
-      "rebuild-flake-boot" = "cd /tmp/home-lab-config && sudo nixos-rebuild boot --flake .";
-
-      # Container management
-      "pods" = "podman ps -a";
-      "images" = "podman images";
-      "logs" = "podman logs";
-
-      # System monitoring
-      "disk-usage" = "df -h";
-      "mem-usage" = "free -h";
-      "processes" = "ps aux | head -20";
-
-      # Network
-      "ports" = "ss -tulpn";
-      "connections" = "ss -tuln";
-
-      # Security
-      "audit-users" = "cat /etc/passwd | grep -E '/bin/(bash|zsh|fish)'";
-      "audit-sudo" = "cat /etc/sudoers.d/*";
+      # Flake management from remote deployments (sma uses temp directory)
+      "rebuild-remote" = "cd /tmp/home-lab-config && sudo nixos-rebuild switch --flake .";
+      "rebuild-remote-test" = "cd /tmp/home-lab-config && sudo nixos-rebuild test --flake .";
+      "rebuild-remote-boot" = "cd /tmp/home-lab-config && sudo nixos-rebuild boot --flake .";
     };
     interactiveShellInit = ''
       # Emacs-style keybindings