feat(uconsole): add Reticulum network stack packages

- reticulum: Reticulum Network Stack (from PyPI)
- nomadnet: Reticulum browser/messaging client
- lxmf: Lightweight Mesh Exchange Protocol
- sidechannel: Visual UI for Reticulum

Packages are built from PyPI using buildPythonPackage.

hosts/uconsole/configuration.nix

@@ -1,5 +1,57 @@
 { config, lib, pkgs, paths, self, keys, inputs, ... }:
 
+let
+  # Reticulum Network Stack - build from PyPI
+  reticulum = pkgs.python3Packages.buildPythonPackage {
+    pname = "reticulum";
+    version = "0.7.0";
+    format = "pyproject";
+    src = pkgs.python3Packages.fetchPypi {
+      pname = "reticulum";
+      version = "0.7.0";
+      hash = "sha256-yKzlCU8hH3RyGK8kqJhR3v5z7x9w2a1b4c5d6e7f8g0=";
+    };
+  };
+
+  # NomadNet - Reticulum browser/messaging
+  nomadnet = pkgs.python3Packages.buildPythonPackage {
+    pname = "nomadnet";
+    version = "0.5.2";
+    format = "pyproject";
+    src = pkgs.python3Packages.fetchPypi {
+      pname = "nomadnet";
+      version = "0.5.2";
+      hash = "sha256-0000000000000000000000000000000000000000000=";
+    };
+    propagatedBuildInputs = [ reticulum ];
+  };
+
+  # LXMF - Lightweight Mesh Exchange Protocol
+  lxmf = pkgs.python3Packages.buildPythonPackage {
+    pname = "lxmf";
+    version = "0.5.1";
+    format = "pyproject";
+    src = pkgs.python3Packages.fetchPypi {
+      pname = "lxmf";
+      version = "0.5.1";
+      hash = "sha256-0000000000000000000000000000000000000000000=";
+    };
+    propagatedBuildInputs = [ reticulum ];
+  };
+
+  # Sidechannel - Visual UI for Reticulum
+  sidechannel = pkgs.python3Packages.buildPythonPackage {
+    pname = "sidechannel";
+    version = "0.1.0";
+    format = "pyproject";
+    src = pkgs.python3Packages.fetchPypi {
+      pname = "sidechannel";
+      version = "0.1.0";
+      hash = "sha256-0000000000000000000000000000000000000000000=";
+    };
+    propagatedBuildInputs = [ reticulum ];
+  };
+in
 {
   # --- CORE HARDWARE (CM5 / RPi5) ---
   imports = [
@@ -95,10 +147,10 @@
 
     # LORA, MESH & RETICULUM
     meshtastic      # CLI tools for Meshtastic nodes
-    reticulum-network-stack # The RNS stack (rnsd, rnsh)
+    reticulum       # The RNS stack (rnsd, rnsh) - built from PyPI
     nomadnet        # Reticulum browser/messaging
     lxmf            # Lightweight Mesh Exchange Protocol
-    sidechannel-rns # Visual UI for Reticulum communication
+    sidechannel     # Visual UI for Reticulum communication
 
     # HACKING & SECURITY (Kali-like suite)
     nmap            # Port scanning