Add navi deployment module and integrate SSH inventory for remote management

- Introduced a new `navi` module for managing deployments across multiple hosts.
- Enhanced SSH inventory management to support public key application for authorized hosts.
- Configured system deployment builder for seamless integration with Navi.
- Updated various host configurations to enable deployment capabilities and streamline SSH access.

modules/hosts/client-services.nix

@@ -1,7 +1,12 @@
 { self, ... }: {
   #TODO[epic=Moderate] Move this somewhere else, would prefer not relying on this module
   flake.nixosModules."client-services" = { ... }: {
-    imports = [ self.nixosModules.systemBluetooth ];
+    imports = [
+      self.nixosModules.systemBluetooth
+      self.nixosModules.systemDeployBuilder
+    ];
+
+    chiasson.system.deploy.builder.enable = true;
 
     # Lab-ish SSH defaults on clients — tighten for anything exposed.
     services.openssh = {