604 is antipodal; its frame is saturated (alpha=240, DOI receipts)

The 604 record (Bianchi et al) is antipodal: 302 lines at 60deg, unremarked in the paper. Its frame is saturated - weight-4 max independent set = 240 (SCIP, gap 0), no 605 there. Receipts + theta cert: DOI 10.5281/zenodo.21306849