Add synthetic test dataset

README.md

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+---
+license: cc0-1.0
+tags:
+- synthetic
+- test-data
+size_categories:
+- n<1K
+---
+
+# aggressive-breakfast-e7660a
+
+Synthetic products test data: 44 rows in `data.csv`.
+
+All values are randomly generated fictional examples, not real observations, products, or user activity. Intended only for CSV loading and pipeline tests; not suitable for scientific or business conclusions. Columns are sampled independently and do not model real-world correlations.
+
+## Fields
+
+- `sample_id`: random identifier for this generated sample.
+- `row_id`: sequential row number starting at 1.
+- `is_synthetic`: always true.
+- `price_usd`, `stock_units`: simulated values in the units named in each column.

data.csv

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+sample_id,row_id,is_synthetic,price_usd,stock_units
+cdbb28b6d15d5462,1,true,414.51,320
+cdbb28b6d15d5462,2,true,13.65,32
+cdbb28b6d15d5462,3,true,10.0,316
+cdbb28b6d15d5462,4,true,381.3,69
+cdbb28b6d15d5462,5,true,73.25,478
+cdbb28b6d15d5462,6,true,409.29,195
+cdbb28b6d15d5462,7,true,381.87,144
+cdbb28b6d15d5462,8,true,2.56,85
+cdbb28b6d15d5462,9,true,421.84,182
+cdbb28b6d15d5462,10,true,233.07,397
+cdbb28b6d15d5462,11,true,491.88,38
+cdbb28b6d15d5462,12,true,499.3,300
+cdbb28b6d15d5462,13,true,113.48,92
+cdbb28b6d15d5462,14,true,420.09,91
+cdbb28b6d15d5462,15,true,21.71,279
+cdbb28b6d15d5462,16,true,313.5,388
+cdbb28b6d15d5462,17,true,230.77,80
+cdbb28b6d15d5462,18,true,265.52,113
+cdbb28b6d15d5462,19,true,315.22,271
+cdbb28b6d15d5462,20,true,166.58,468
+cdbb28b6d15d5462,21,true,88.18,367
+cdbb28b6d15d5462,22,true,145.63,462
+cdbb28b6d15d5462,23,true,263.83,82
+cdbb28b6d15d5462,24,true,90.98,322
+cdbb28b6d15d5462,25,true,51.86,441
+cdbb28b6d15d5462,26,true,116.39,462
+cdbb28b6d15d5462,27,true,368.53,161
+cdbb28b6d15d5462,28,true,93.63,371
+cdbb28b6d15d5462,29,true,363.29,291
+cdbb28b6d15d5462,30,true,305.75,228
+cdbb28b6d15d5462,31,true,444.0,327
+cdbb28b6d15d5462,32,true,309.53,43
+cdbb28b6d15d5462,33,true,389.0,438
+cdbb28b6d15d5462,34,true,104.74,307
+cdbb28b6d15d5462,35,true,366.19,258
+cdbb28b6d15d5462,36,true,154.26,323
+cdbb28b6d15d5462,37,true,385.24,85
+cdbb28b6d15d5462,38,true,156.34,485
+cdbb28b6d15d5462,39,true,152.86,375
+cdbb28b6d15d5462,40,true,130.78,242
+cdbb28b6d15d5462,41,true,318.4,188
+cdbb28b6d15d5462,42,true,45.47,95
+cdbb28b6d15d5462,43,true,231.39,20
+cdbb28b6d15d5462,44,true,200.94,166