feat(machine): landscape layout and fullscreen mode

- Switch Electron window to landscape (1920x1080) with fullscreen fallback
- Rearrange IdleView for horizontal layout (logo+badges left, action cards right)
- Fix hostname command in provision/build scripts (use ip route instead of hostname -I)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

deploy/nixos/live.nix

@@ -24,34 +24,23 @@ let
   # .env template with regtest defaults pointing to the dev machine
   envTemplate = pkgs.writeText "lamassu-atm-env" ''
     # Lamassu ATM Live USB Configuration
-    # Edit this file and restart: sudo systemctl restart lamassu-atm
-    #
-    # Dev machine LAN address (adjust to your network)
+    # Run provision-atm.sh from your dev machine, or edit manually:
+    #   sudo nano /var/lib/lamassu-atm/.env && sudo systemctl restart lamassu-atm
+
     VITE_RELAY_URL=ws://192.168.1.190:7777
     VITE_LIGHTNING_PUB_API_URL=http://192.168.1.190:1776
     VITE_EXTENSION_API_URL=http://192.168.1.190:1777
 
-    # Lightning.Pub credentials (fill in after boot)
     VITE_LIGHTNING_PUB_PUBKEY=
     VITE_ATM_PRIVATE_KEY=
     VITE_ADMIN_TOKEN=
     VITE_APP_ID=
     VITE_APP_TOKEN=
-    VITE_LINKING_TOKEN=
 
-    # Machine configuration
     VITE_LAMASSU_MACHINE_MODEL=sintra
     VITE_LAMASSU_FIAT_CODE=USD
 
-    # Hardware (uncomment and set for real hardware)
-    # VITE_LAMASSU_VALIDATOR_DEVICE=/dev/ttyUSB0
-    # VITE_LAMASSU_DISPENSER_DEVICE=/dev/ttyUSB1
-    # VITE_LAMASSU_CASSETTES=
-
-    # Force production mode when running via `electron /path`
     ELECTRON_FORCE_PROD=1
-
-    # Display
     DISPLAY=:0
   '';
 in
@@ -159,7 +148,7 @@ in
     };
   };
 
-  # Install the .env template on first boot
+  # Install the .env on first boot
   system.activationScripts.lamassu-env = ''
     mkdir -p /var/lib/lamassu-atm
     if [ ! -f /var/lib/lamassu-atm/.env ]; then