SelfHost Atlas install-verification dataset

Self-hostable applications whose published install instructions were run end to end on a fresh cloud server (placeholder hostnames swapped for a real one, recorded in the transcript), with the OS and date of each run, plus idle first-boot RAM and disk measured on a named machine for a subset. Documented minimum RAM is included and labelled as documented, not measured. Also includes catalog.json / catalog.csv (catalog metadata: category, license, stack, difficulty, SaaS it replaces). Methodology: https://selfhostatlas.com/how-we-test