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After merging PR #314, a header-only file's seeded File proposal means the category check alone no longer refuses an import that kept no record. nothing_to_import does, and this pins it. The docs now name from_merge (switched to from_csv in the merge) among the CSV entry points. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VdfEGXA7aJ6ftMsCc9PJze