feat: add HackerGadgets AIO v2 board module + enable on uConsole CM5

hosts/uconsole-cm5/configuration.nix

@@ -20,10 +20,15 @@
     users.ai-worker.main
   ];
 
+  # AI worker user (Hermes SSH access)
+
+  # Age secret for gortium password (file created by user)
   age.secrets.gortium_password = {
     file = ../../secrets/gortium_password.age;
   };
 
+  # Password file for gortium (merges with users/gortium/default.nix)
+
   # WiFi via NetworkManager + secret agenix
   networking.networkmanager.enable = true;
 
@@ -35,24 +40,19 @@
     enable = true;
     xwayland.enable = true;
   };
-
-  # Home-manager needs zsh enabled system-wide for gortium user
-  programs.zsh.enable = true;
-
   # HackerGadgets AIO v2 board
   hardware.uconsole-cm5-aio-v2 = {
     enable = true;
 
     # Rails actifs au boot
     bootRails = {
-      GPS  = false;  # activé à la demande via aiov2_ctl GPS on
-      LORA = false;  # activé à la demande via aiov2_ctl LORA on
-      SDR  = false;  # activé à la demande via aiov2_ctl SDR on
-      USB  = false;  # activé à la demande via aiov2_ctl USB on
+      GPS  = false;
+      LORA = false;
+      SDR  = false;
+      USB  = false;
     };
 
-    enableGPS = false; # activer quand antenne GPS branchée
+    enableGPS = false;
   };
 
-  # DSI display fix: les patches sont dans le fork gortium/nixos-uconsole (cm5_fix)
-}
+}