Auto-updater + clipping improvements + bug fixes

• The workflow will now auto-update.
• Improvements to the clipaction:
  • It now works with all major browsers. However, due to limitations imposed by Mozilla, Firefox support is very hacky and unreliable.
  • It automatically detects the browser being used (it must be the active application). You no longer have to set a browser environment variable.
• Refactored search to avoid problematic dependencies.
• Minor improvement to global search (Cmd+Shift+L)