Fix: Use AppData directory for log files to avoid permission errors

Issue: Application crashed when installed in Program Files due to
UnauthorizedAccessException when trying to write log files to the
installation directory.

Changes:
- SystemInfo.cs: Updated error logging to use LocalApplicationData/PSG-Oversight
- OsqueryService.cs: Added GetLogPath() helper method and updated all log writes
  to use user's AppData directory instead of current directory
- Added try-catch wrappers to silently handle any remaining logging failures

All log files now write to: %LOCALAPPDATA%\PSG-Oversight\

This fixes the startup crash reported in Event Viewer when running
the installed application.

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

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

LD-SysInfo/SystemInfo.cs

@@ -218,7 +218,17 @@ namespace LD_SysInfo
             }
             catch (Exception ex)
             {
-                File.AppendAllText("osquery_error.log", $"[{DateTime.Now}] {ex}\n");
+                try
+                {
+                    string logDir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "PSG-Oversight");
+                    Directory.CreateDirectory(logDir);
+                    string logPath = Path.Combine(logDir, "osquery_error.log");
+                    File.AppendAllText(logPath, $"[{DateTime.Now}] {ex}\n");
+                }
+                catch
+                {
+                    // Silently fail if we can't write logs
+                }
             }
 
             return info;