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/Services/OsqueryService.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+
+using Newtonsoft.Json.Linq;
+
+namespace LD_SysInfo.Services
+{
+    public static class OsqueryService
+    {
+        private static string GetOsqueryPath()
+        {
+            var baseDir = AppContext.BaseDirectory;
+            var path = Path.Combine(baseDir, "Assets", "osqueryi.exe");
+
+            if (!File.Exists(path))
+            {
+                File.AppendAllText("osquery_error.log", $"[{DateTime.Now}] ❌ osqueryi.exe not found at {path}\n");
+                throw new FileNotFoundException("osqueryi.exe not found", path);
+            }
+
+            return path;
+        }
+
+        private static string RunQuery(string sql)
+        {
+            var processInfo = new ProcessStartInfo
+            {
+                FileName = GetOsqueryPath(),
+                Arguments = $"--json \"{sql}\"",
+                RedirectStandardOutput = true,
+                UseShellExecute = false,
+                CreateNoWindow = true
+            };
+
+            using var process = Process.Start(processInfo);  // ✅ FIXED — actually start the process
+            if (process == null)
+                throw new Exception("Failed to start osquery process");
+
+            string output = process.StandardOutput.ReadToEnd();
+            process.WaitForExit();
+
+            // Optional debug logging
+            File.AppendAllText("osquery_debug.log",
+                $"[{DateTime.Now}] Ran query: {sql}\nOutput length: {output.Length}\n");
+
+            return output;
+        }
+
+        public static List<Dictionary<string, string>> Query(string sql)
+        {
+            string json = RunQuery(sql);
+
+            try
+            {
+                var jArray = JArray.Parse(json);
+                var results = new List<Dictionary<string, string>>();
+
+                foreach (var obj in jArray)
+                {
+                    var dict = new Dictionary<string, string>();
+                    foreach (var prop in (JObject)obj)
+                        dict[prop.Key] = prop.Value?.ToString() ?? "";
+                    results.Add(dict);
+                }
+
+                return results;
+            }
+            catch (Exception ex)
+            {
+                File.AppendAllText("osquery_error.log",
+                    $"[{DateTime.Now}] ⚠️ JSON parse failed for query '{sql}': {ex.Message}\n");
+                return new List<Dictionary<string, string>>();
+            }
+        }
+    }
+}