SimurgArray: master plan, repo scaffolding and data/ref fetch scripts

Phase 0 deliverables: full technical specification and roadmap
(SIMURGARRAY_MASTER_PLAN.md), bootstrap script for reference
open-source repos and tiered dataset fetch script with checksums.

README.md

@@ -0,0 +1,11 @@
+# SimurgArray
+
+Personal research toolkit for Illumina Infinium genotyping BeadChip data
+(IDAT → normalization → genotype calling → BAF/LRR → QC → VCF/PLINK; later CN/LOH, PGx, cluster training).
+
+Start with **SIMURGARRAY_MASTER_PLAN.md** (full specification and roadmap).
+
+```bash
+bash scripts/bootstrap_refs.sh     # clone reference open-source repos into refs/
+bash scripts/fetch_data.sh p0      # download small test datasets into data/
+```