codebase/gnomancer ? reverse-engineered prompt

Build me a local DNA analysis app that takes a raw data file from AncestryDNA, 23andMe, MyHeritage, FamilyTreeDNA, LivingDNA, or a VCF and turns it into one easy to read HTML report.

I want it to run entirely on the user’s computer, with nothing uploaded, and to produce a clean report that explains the results in plain language first. It should cover basic quality checks, Y and mtDNA haplogroups, common traits like pigmentation and lactose, and health related sections like ClinVar scans, carrier findings, and pharmacogenomics, but keep the health parts collapsed by default so they are not in your face.

Please also include a family mode that can compare three files, show shared DNA, likely relationships, and which parent each allele came from. If possible, make it easy to use from the command line and from an AI assistant, with only derived results being shared, not the raw DNA file. Use current docs or tools online if you need to.