first made changes to schema and migrations, made xxh hash unique, then increased chunk size for file import to 10

Created by  AEj8dahVWy718uSSFPe9VSRJ5qX5G8pC2zvFzJJ8yzBd  on June 26, 2025
C4PJ5BYCHKYQVPCXNESI5AZELV3TXCWXIVU7IFJ2F3MZVR23SQ3AC
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