fix(no-rgb): handle transient hardware unavailability during deploy

modules/no-rgb.nix

@@ -17,13 +17,26 @@
           ];
 
           text = ''
-            #!/bin/sh
-            set -e
+            # Retry loop to wait for hardware to be ready
+            NUM_DEVICES=0
+            for attempt in 1 2 3 4 5; do
+              NUM_DEVICES=$(openrgb --noautoconnect --list-devices 2>/dev/null | grep -cE '^[0-9]+: ' || echo 0)
+              if [ "$NUM_DEVICES" -gt 0 ]; then
+                break
+              fi
+              if [ "$attempt" -lt 5 ]; then
+                sleep 2
+              fi
+            done
 
-            NUM_DEVICES=$(openrgb --noautoconnect --list-devices | grep -cE '^[0-9]+: ')
+            # If no devices found after retries, exit gracefully
+            if [ "$NUM_DEVICES" -eq 0 ]; then
+              exit 0
+            fi
 
+            # Disable RGB on each device
             for i in $(seq 0 $((NUM_DEVICES - 1))); do
-              openrgb --noautoconnect --device "$i" --mode direct --color 000000
+              openrgb --noautoconnect --device "$i" --mode direct --color 000000 || true
             done
           '';
         }
@@ -31,9 +44,12 @@
     in
     {
       description = "disable rgb";
+      after = [ "systemd-udev-settle.service" ];
       serviceConfig = {
         ExecStart = lib.getExe no-rgb;
         Type = "oneshot";
+        Restart = "on-failure";
+        RestartSec = 5;
       };
       wantedBy = [ "multi-user.target" ];
     };