P1 validated on 1000 Genomes Omni2.5 (2141 vendor GTCs + IDATs)

All 2141 vendor-written GTC v3 files match BeadArrayFiles field by field
and re-encode byte-identically; all IDAT pairs parse; the 2.45M-locus BPM,
dbv-7 EGT and CSV manifest agree with BeadArrayFiles and each other.
Run on a self-destructing AWS spot instance (42 min, ~$0.20).

docs/validation/P1_omni2141_summary.json

@@ -0,0 +1,53 @@
+{
+  "root": "/work/omni/data",
+  "started": "2026-09-27T19:00:42Z",
+  "n_gtc": 2141,
+  "n_idat_pairs": 2141,
+  "unpaired_idats": 0,
+  "gtc_ok": 2141,
+  "gtc_roundtrip_identical": 2141,
+  "gtc_versions": [
+    3
+  ],
+  "gtc_autocall_versions": [
+    "1.6.2.2"
+  ],
+  "gtc_failures": [],
+  "gtc_roundtrip_failures": [],
+  "idat_ok": 2141,
+  "idat_failures": [],
+  "idat_midblock_itemsizes": [
+    4
+  ],
+  "idat_chip_types": [
+    "BeadChip 4x10"
+  ],
+  "bpm": {
+    "num_loci": 2450000,
+    "names": true,
+    "snps": true,
+    "chroms": true,
+    "map_infos": true,
+    "address_a": true,
+    "assay_types": true,
+    "normalization_lookups": true,
+    "n_bins": 51
+  },
+  "egt": {
+    "num_records": 2450000,
+    "dbv": 7,
+    "extra_floats": 15,
+    "record_mismatches": 0
+  },
+  "bpm_csv_problems": [],
+  "gtc_vs_bpm_num_snps": [
+    2450000,
+    2450000
+  ],
+  "gtc_transforms_vs_bins": [
+    51,
+    51
+  ],
+  "seconds": 1098.7,
+  "passed": true
+}