As a bit of background information, OmniOutliner documents in a DEVONthink macOS database display the contents of the documents with Quick Look and are also recognized as an OO document, where the Open With command will open the selected document in OO.
With DEVONthink to Go, the contents of an OO document cannot be displayed as on iOS OO apparently does not include a Quick Look viewer. Don’t know if that’s an Omni thing or an iOS thing, but that is not important to this request. Additionally, DEVONthink does not recognize the OO document as belonging to OO so the user cannot do anything with the document outside of sending it somewhere with the Share extension.
The iOS Files.app handles things differently, and while it also cannot Quick Look the document, it does recognize it as belonging to OO, even displays the correct document icon. When I click on an OO document in Files.app, it opens the document in OO which works nicely. As a result, the best way that I have found to open OO documents in a DEVONthink to Go database is to browse the database with Files.app and open it there. I would really like to eliminate the need for Files.app to accomplish this.
Would it be possible to add this functionality to DEVONthink to Go, where it recognizes the document as an OO document, and clicking on the document opens it in OO, same as how it works using the Files.app?