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Keep only image-backed rows (drop prompt-only placeholders)
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Upload full question bank: all designed items (image rows + prompt-only rows)
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Add HC6 (invented-melody notation, retrieval-proof pass)
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Add HC4 (solved OUR novel sudoku, 81/81) — overturns retrieval hypothesis
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Add HC5 (full 42-note Twinkle, 5/5 pass)
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Add HC3 (24 solar terms clock dial, 6/6 pass)
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Add HC1/HC2 (retrieval finding); meta now includes checklist (judging criteria) + difficulty
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Add H5,N3,N8,N10 + HB1,HB2,HB5,HB6,HB7 (all with eval)
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Add H5, N3, N10, N8 (+eval); v1 now 10 items
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Add H4, N7, N9 (+eval); v1 now 6 items
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Add eval results (chatgpt-5.5-high) to meta
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Add v1: first 3 items (G6, H2, H3)
