Refactor and enhance monitor control logic

- Consolidated brightness and capabilities retrieval logic with `GetBrightnessInfoCore` and `RetryHelper` for improved modularity and resiliency.
- Introduced `LockedDictionary` for thread-safe dictionary operations, replacing manual locking in `PhysicalMonitorHandleManager` and `MonitorStateManager`.
- Refactored monitor discovery in `MonitorManager` to separate discovery, initialization, and validation steps for better maintainability.
- Simplified event registration in `App.xaml.cs` with helper methods to reduce repetitive code.
- Enhanced VCP code handling with new methods for formatted and sorted VCP code retrieval.
- Added `SuspendNotifications` in `MonitorInfo` to optimize batch property updates and improve UI performance.
- Simplified parameter update methods in `MonitorViewModel` by removing redundant `fromProfile` logic.
- Improved state management with synchronous save support and reusable JSON building logic in `MonitorStateManager`.
- Updated UI bindings in `ProfileEditorDialog.xaml` and improved VCP code display in `MainViewModel`.
- Cleaned up redundant code, improved logging, and standardized method naming for better readability and maintainability.

src/modules/powerdisplay/PowerDisplay.Lib/Utils/MonitorFeatureHelper.cs

@@ -6,6 +6,7 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using ManagedCommon;
+using PowerDisplay.Common.Drivers;
 
 namespace PowerDisplay.Common.Utils
 {
@@ -15,26 +16,6 @@ namespace PowerDisplay.Common.Utils
     /// </summary>
     public static class MonitorFeatureHelper
     {
-        /// <summary>
-        /// VCP code for Brightness (0x10) - Standard VESA MCCS brightness control
-        /// </summary>
-        public const int VcpCodeBrightness = 0x10;
-
-        /// <summary>
-        /// VCP code for Contrast (0x12) - Standard VESA MCCS contrast control
-        /// </summary>
-        public const int VcpCodeContrast = 0x12;
-
-        /// <summary>
-        /// VCP code for Select Color Preset (0x14) - Color temperature control
-        /// </summary>
-        public const int VcpCodeSelectColorPreset = 0x14;
-
-        /// <summary>
-        /// VCP code for Audio Speaker Volume (0x62)
-        /// </summary>
-        public const int VcpCodeVolume = 0x62;
-
         /// <summary>
         /// Result of parsing monitor feature support from VCP capabilities
         /// </summary>
@@ -81,10 +62,10 @@ namespace PowerDisplay.Common.Utils
             // Determine feature support based on VCP codes
             return new FeatureSupportResult
             {
-                SupportsBrightness = vcpCodeInts.Contains(VcpCodeBrightness),
-                SupportsContrast = vcpCodeInts.Contains(VcpCodeContrast),
-                SupportsColorTemperature = vcpCodeInts.Contains(VcpCodeSelectColorPreset),
-                SupportsVolume = vcpCodeInts.Contains(VcpCodeVolume),
+                SupportsBrightness = vcpCodeInts.Contains(NativeConstants.VcpCodeBrightness),
+                SupportsContrast = vcpCodeInts.Contains(NativeConstants.VcpCodeContrast),
+                SupportsColorTemperature = vcpCodeInts.Contains(NativeConstants.VcpCodeSelectColorPreset),
+                SupportsVolume = vcpCodeInts.Contains(NativeConstants.VcpCodeVolume),
                 CapabilitiesStatus = "available",
             };
         }