Add session-cached call relationships and exact incoming xrefs using a body-free graph and bounded native queries. Reuse existing graph/path tools, preserve coverage and exact u64 identities, and retain native cleanup owners and admission leases.
Validated with 136 tests, real Linux Kuna workflows on SQLite/zlib and source-owned fixtures, independent native xref comparisons, resource measurements, CI and review.
Co-authored-by: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>
Co-authored-by: Kaoru0822 <208281322+kaoru0822-kitauji@users.noreply.github.com>
