I already tested StitchBuddy with an early beta version of macOS 13, and was positively surprised by its instant compatibility. Today I installed Ventura's final release and tested thoroughly StitchBuddy's main app, its QuickLook and Spotlight plugins, as well as all Automator actions: All tests were successfully passed, and StitchBuddy is confirmed to be compatible with macOS 13 "Ventura".

Please don't be shy to contact me with any issue which I might have overlooked.