A working macOS File Provider extension - make a remote server appear as a real drive in Finder - and a written account of the framework traps it cost: identifiers leaking into system logs, noSuchItem deleting the user's file, cached capabilities that silently refuse every write.
macos swift sandbox webdav finder fileprovider app-extension swift6 nsfileprovider file-provider-extension
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Updated
Jul 30, 2026 - Swift