The launch window no longer probes each recent library with the lock check
of File > Open Library (which created catalog.lock and wrote
catalog.lock.owner into every free library at every launch, including
other drives, network shares and sleeping disks). A row is now checked by
looking only: the path exists, is a folder, can be listed, holds a
LightCraft catalog, and that catalog opens for reading. A library another
program has open is found when Open is pressed: the open fails with the
lock owner's message, the window stays and greys the row out.
New test: listing (and drawing the window) leaves every library folder
byte-identical (contents and modification times); it fails with the old
probe. Docs (What's New, parity row, control protocol) say so.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AbegtYaPuwqZ81pGfELsFK
Claude
3fe02631e6