feat: isolate docker networks and add cyt-pi remote node config

- Refactor all 12 compose stacks to use isolated networks with Traefik as the hub
- Add openclaw-ssh sidecar to ai stack for reverse tunneling (port 2425)
- Add sshnode entrypoint to Traefik configuration
- Add cyt-pi host configuration for Pi Zero 2 W (headless)
- Include kismet and target_detector_cli services for remote Wi-Fi monitoring
- Add reverse SSH tunnel service via autossh

flake.nix

@@ -62,6 +62,21 @@
               ./modules/nixos/services/ollama_init_custom_models.nix
               ./modules/nixos/services/openclaw_node.nix
               ./users/gortium.nix
+              ./users/ai-worker.nix
+            ];
+          };
+
+          cyt-pi = nixpkgs.lib.nixosSystem {
+            specialArgs = { inherit self keys paths inputs; };
+            modules = [
+              {
+                nixpkgs.overlays = overlays;
+                nixpkgs.config.allowUnfree = true;
+                nixpkgs.hostPlatform = "aarch64-linux";
+                nix.package = lix.packages."aarch64-linux".default;
+              }
+              ./hosts/cyt-pi/configuration.nix
+              ./hosts/cyt-pi/hardware-configuration.nix
             ];
           };
         };