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Ilya Brykau
d6417ada0e
USAGE, WRITES and READS edges resolve through the same short-name registry as CALLS but never consulted the #725 cross-language guard. On a Go tree with eBPF C probes every Go identifier spelled like a C one produced a reference edge into the C file: 31.5% of all WRITES on the originally measured repo crossed the Go->C boundary, led by dozens of Go test locals named event writing a C probe's automatic variable. Add cbm_suppress_cross_language_ref() - the reference-edge analog of cbm_suppress_cross_language_suffix_match - and consult it on BOTH resolvers of each edge type: the sequential pass (pass_usages.c resolve_usage_edges registry-fallback branch, resolve_rw_edges) and their parallel twins (pass_parallel.c resolve_file_usages, resolve_file_rw). The sequential-only version of this change left 344 Go->C WRITES alive on a ~1150-file repo because large repos resolve through pass_parallel.c - the field census caught it, and the parallel-twin test now pins it. Unlike the CALLS guard the predicate takes no strategy parameter: a reference edge carries no import-closure evidence, so every registry strategy is a bare-name guess across a boundary. LSP-backed semantic references resolve before the fallback and are unaffected. JS/TS stay one family, and C/C++ count as one family too (.h maps to CBM_LANG_CPP, so a .c file referencing its own header is not a boundary). Field-validated on the ~1150-file Go+C repo: Go->C/C++ WRITES 835->0, USAGE 1545->0; C->Go 15/90->0; 6432 reference edges dropped in total, every one cross-language (Go->.json 3034, Go->.hpp/.h 1612, Go->.c 746, Go->.sh/.yaml/.yml 443, ...) and none same-language. CALLS and IMPORTS totals are byte-identical to main. Fixes #1928 Signed-off-by: Ilya Brykau <ilya.brykau@orca.security>