Release v1.2.0: Integrate osquery for enhanced system information

Major Features:
- Integrated osquery for comprehensive system information gathering
- Added OsqueryService for executing SQL queries against system tables
- Implemented Osquery Console tab for interactive SQL queries

System Info Improvements:
- Enhanced system info collection using osquery tables
- Added support for multiple GPU detection
- Improved memory detection with proper GB formatting
- Fixed OS Architecture detection (x64/x86)
- Better network interface detection (IPv4 only)
- Human-readable timestamp formatting

UI/UX Enhancements:
- Added window resizing with corner drag support
- Implemented dynamic window sizing (SizeToContent)
- Added ScrollViewer for content overflow
- Improved IP address formatting with bullet points
- Added field labels to all system info displays
- Set minimum/maximum window size constraints

Bug Fixes:
- Fixed XAML StackPanel Spacing property issue
- Merged duplicate MainWindow constructors
- Fixed non-nullable field warnings
- Fixed EventHandler nullability signatures
- Removed redundant hostname/OS name fields
- Fixed GPU registry query to detect all GPUs

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

LD-SysInfo/Config.cs

@@ -0,0 +1,39 @@
+#nullable disable
+using System;
+using System.IO;
+
+using Newtonsoft.Json;
+
+namespace LD_SysInfo
+{
+    public class AppConfig
+    {
+        [JsonProperty("ServerUrl")] public string ServerUrl { get; set; } = "https://yourserver.com/api/status";
+        [JsonProperty("EnableLogging")] public bool EnableLogging { get; set; } = true;
+        [JsonProperty("KeepAlivePeriod")] public int KeepAlivePeriod { get; set; } = 30;
+        [JsonProperty("SystemInfoInterval")] public int SystemInfoInterval { get; set; } = 60;
+        [JsonProperty("ClientIdentifier")] public string ClientIdentifier { get; set; } = "your-default-client-id";
+        [JsonProperty("Auth")] public AuthConfig Auth { get; set; } = new();
+    }
+
+    public class AuthConfig
+    {
+        [JsonProperty("Username")] public string Username { get; set; } = "testuser";
+        [JsonProperty("Password")] public string Password { get; set; } = "testpassword";
+    }
+
+    public static class ConfigManager
+    {
+        private static readonly string ConfigPath = Path.Combine(AppContext.BaseDirectory, "config.json");
+
+        public static AppConfig LoadConfig(string? pathOverride = null)
+        {
+            string path = pathOverride ?? ConfigPath;
+            if (!File.Exists(path))
+                throw new FileNotFoundException($"Config file not found at {path}");
+
+            string json = File.ReadAllText(path);
+            return JsonConvert.DeserializeObject<AppConfig>(json) ?? new AppConfig();
+        }
+    }
+}