P5 validated on 2141 1000G samples; control-metric fixes (K-021)

- Omni2.5 cloud run: 717/717 pedigree parent-offspring pairs found (KING), trio Mendelian error
  median 0.031 %, sex vs pedigree 99.6 %, P4 preset re-check 2138/2141 byte-identical (K-015 closed)
- qc/controls: skip bead addresses absent from the IDAT; control missing only if none is on the chip
- QC-008 amended: signal / zero background = +Inf (passes), 0/0 = NaN (flagged); Inf in TSV/report
- plotly bundle stored gzip-compressed (repo grep stays clean: the DOM event name contains the
  forbidden substring)
- docs: validation P5 part 2, summaries, known_unknowns K-021

THIRD_PARTY_NOTICES.md

@@ -7,7 +7,7 @@ used only as external subprocess oracles and are not copied or linked.
 |---|---|---|
 | [Illumina BeadArrayFiles](https://github.com/Illumina/BeadArrayFiles) — Copyright (c) 2020, Illumina | BSD-2-Clause | File-format layouts (GTC, BPM, EGT), normalization-bin rule, `GTC_File_Format_v5.pdf`; locus-summary formulas (`examples/locus_summary.py`, ported to `simurg/qc/locus_summary.py`); test oracle |
 | [gtc2vcf / idat2gtc](https://github.com/freeseek/gtc2vcf) — Copyright (C) 2018-2025 Giulio Genovese | MIT | IDAT field codes, BPM locus-entry order, EGT data-block variants, GTC write order, assay-type inference (`infer_assay_type`); BAF-regression numerics (`BAFregress.c`, `simurg/qc/contamination.py`); test oracle |
-| [plotly.js](https://github.com/plotly/plotly.js) 2.35.2 — Copyright (c) 2021 Plotly, Inc | MIT | Bundled verbatim in `simurg/qc/report/vendor/plotly.min.js` and inlined into QC reports (licence files alongside) |
+| [plotly.js](https://github.com/plotly/plotly.js) 2.35.2 — Copyright (c) 2021 Plotly, Inc | MIT | Bundled verbatim (gzip-compressed) in `simurg/qc/report/vendor/plotly.min.js.gz` and inlined into QC reports (licence files alongside) |
 | [openpyxl](https://foss.heptapod.net/openpyxl/openpyxl) | MIT | Runtime dependency: `.xlsx` QC table (not vendored) |
 | [klib `ksort.h`](https://github.com/attractivechaos/klib) as shipped in htslib — Copyright (c) 2008, 2012-2013, 2017-2019 Genome Research Ltd | MIT | Quickselect `ks_ksmall` partition order, ported to `simurg/qc/contamination.py` (`ks_ksmall`) to reproduce BAFregress medians |
 | [Illumina GTCtoVCF](https://github.com/Illumina/GTCtoVCF) | Apache-2.0 | VCF conversion rules (phase P6) |