phase 2: move modules/ (server-*, desktop-*, shared); drop dotfiles no-rgb (superseded)

modules/no-rgb.nix

@@ -0,0 +1,66 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+{
+  systemd.services.no-rgb =
+    let
+      no-rgb = (
+        pkgs.writeShellApplication {
+          name = "no-rgb";
+          runtimeInputs = with pkgs; [
+            openrgb
+            coreutils
+            gnugrep
+          ];
+
+          text = ''
+            # Retry loop to wait for hardware to be ready
+            NUM_DEVICES=0
+            for attempt in 1 2 3 4 5; do
+              DEVICE_LIST=$(openrgb --noautoconnect --list-devices 2>/dev/null) || DEVICE_LIST=""
+              NUM_DEVICES=$(echo "$DEVICE_LIST" | grep -cE '^[0-9]+: ') || NUM_DEVICES=0
+              if [ "$NUM_DEVICES" -gt 0 ]; then
+                break
+              fi
+              if [ "$attempt" -lt 5 ]; then
+                sleep 2
+              fi
+            done
+
+            # If no devices found after retries, exit gracefully
+            if [ "$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 || true
+            done
+          '';
+        }
+      );
+    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" ];
+    };
+
+  services.hardware.openrgb = {
+    enable = true;
+    package = pkgs.openrgb-with-all-plugins;
+    motherboard = "amd";
+  };
+
+  services.udev.packages = [ pkgs.openrgb-with-all-plugins ];
+  hardware.i2c.enable = true;
+}