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maziggy
6774956565
The SpoolBuddy remote-update flow shelled out to `ssh-keygen` to create its update keypair on first use. Inside the Docker container the process runs under an arbitrary PUID that is not listed in /etc/passwd, so ssh-keygen aborted at the getpwuid() home-directory lookup with "no user exists for uid 1001" and the update button failed. Generate the ed25519 keypair in-process via the `cryptography` library (already a dependency) and serialize it in OpenSSH format. No subprocess, no /etc/passwd lookup. Native installs are unaffected. Added a regression test that asserts no subprocess is spawned during keypair creation so this can't come back.