ExtractBench v1.1: tighter boxes, new box ground truth, value fixes (#2)

Sync repaired ExtractBench ground truth

Update README.md

Reground ishares printed values: subtotal amounts and inline issuer names cite their printed text, not the row region

Repair evidence bboxes: wrapped-run unions marked coarse, row grounding rebuilt from the printed ordinal column (45 docs)

Repair evidence bboxes: wrapped-run unions marked coarse, row grounding rebuilt from the printed ordinal column (45 docs)

Repair evidence bboxes: wrapped-run unions marked coarse, row grounding rebuilt from the printed ordinal column (45 docs)

Restore ExtractBench

initial commit