v0.5.76 - Fix Update Checker

What's Changed

Fixed Auto-Update

• Downloads now save to Downloads folder (not temp)
• Platform-specific installer execution:
  • Windows: msiexec for .msi, cmd start for .exe
  • macOS: open command for .dmg
  • Linux: chmod +x then open file manager
• Added shell:allow-execute permission for running installers
• Added GitHub release page link as fallback option

Technical

• Use Command.create() instead of open() for executing local files
• Better error logging for debugging

Full Changelog: v0.5.75...v0.5.76