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/geir.nix

@@ -132,28 +132,19 @@ in {
   programs.zsh = {
     enable = true;
 
-    # Shell aliases
+    # Shell aliases (user-specific only, common ones in shell-aliases.nix)
     shellAliases = {
-      # Development workflow
+      # Development workflow - geir specific
       "home-lab" = "z /home/geir/Home-lab";
       "configs" = "z /home/geir/Home-lab/user_configs/geir";
       "emacs-config" = "emacs /home/geir/Home-lab/user_configs/geir/emacs.org";
 
-      # Quick system management
-      "rebuild-test" = "sudo nixos-rebuild test --flake /home/geir/Home-lab";
-      "rebuild" = "sudo nixos-rebuild switch --flake /home/geir/Home-lab";
-      "collect" = "sudo nix-collect-garbage --d";
-      "optimise" = "sudo nix-store --optimise";
+      # Flake-specific rebuilds (geir has access to local flake directory)
+      "rebuild-local" = "sudo nixos-rebuild switch --flake /home/geir/Home-lab";
+      "rebuild-local-test" = "sudo nixos-rebuild test --flake /home/geir/Home-lab";
 
       # Git shortcuts for multi-remote workflow
       "git-status-all" = "git status && echo '--- Checking origin ---' && git log origin/main..HEAD --oneline && echo '--- Checking github ---' && git log github/main..HEAD --oneline";
-
-      # Container shortcuts
-      "pdm" = "podman";
-      "pdc" = "podman-compose";
-
-      # Media shortcuts
-      "youtube-dl" = "yt-dlp";
     };
 
     # History configuration