Pass 7: a pending Save over an existing ship.cc is refused and leaves it; a failed Save keeps the files that were in
the ship folder; New Ship takes no hardpoints from the ship before it; a buffer that belongs to another ship is neither
saved nor rasterised. Pass 8: operators called with undo=True push a native step in background Blender only when they
carry UNDO, so Rasterise, Flip Nose and New Ship undo as one step and Save does not. Nine hand mutants, all caught.
Closes no finding; every commit builds (Python only).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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