Combine BND identity with endpoint genes
Source:R/structural_identity.R
rduckvep_prepare_breakend_fusion.Rd`pairs_table` holds the result of [rduckvep_prepare_breakend_pairs()] and `genes_table` has `event_index` and `gene_id`, one row per gene overlapped by that physical endpoint. Each source record keeps its own row and gene list. `candidate_partner_genes` records partner-gene evidence only: the result never asserts a fusion, frame or phase.