ZipPacker now captures the full BAT_DEBUG log stream into an in-memory
buffer for the lifetime of the pack and writes it as bat-debug.log inside
the produced zip, so archives are self-describing for post-mortem
debugging (which assets were found, where they were rewritten to, which
files were missing, etc.).
The capture forces the blender_asset_tracer logger to DEBUG only on a
dedicated handler, so terminal verbosity is unchanged. The log is flushed
into the closed zip via append mode in close(), which also covers
post-transfer messages and KeyboardInterrupt / FileTransferError paths.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
