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

hosts/cyt-pi/hardware-configuration.nix

@@ -0,0 +1,24 @@
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "usbhid" "sdhci_pci" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  # Pi Zero 2 W specific filesystem
+  fileSystems."/" =
+    { device = "/dev/disk/by-label/NIXOS_SD";
+      fsType = "ext4";
+      options = [ "noatime" ];
+    };
+
+  swapDevices = [ ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
+  hardware.enableRedistributableFirmware = true;
+}