spec_store's tree() read every file under the root while a Store was open; on Windows SQLite holds byte-range locks on its database, so the read failed (os error 33) in two tests. The lock seam locks only wanderbooks.lock, never data, so it is not the cause. tree() now leaves out the live database and its -wal/-shm/-journal; the tests compare the journal, blobs and kept-aside files. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01HS8WZziDnyxunC23MUxrLp