Hi Quinn, long time no chat.
Yes, this is a MacOS application. The app in question is intended for internal use, though the same functionality will eventually exist in a publicly available app (which will probably be distributed to end users directly, though that's not my decision.) There is nothing checked in the App Sandbox section of Signing & Capabilities, and the folders listed there are all Read/Write.
OS is 13.6.3 and Xcode is 15.1