Parent: #433\nBlocks: #429\n\nAdd real optimizer call-link metadata and concurrency-safe publication for call operations. Profiles remain advisory: every installed direct target must be revalidated at link time, guarded at use, and replaced/reset as one coherent record.\n\n## Acceptance\n\n- [x] Represent callee identity, target artifact generation, and entry as one immutable published record.\n- [x] Make concurrent slow-path writers converge without torn or lost publication.\n- [x] Revalidate the callee and target generation immediately before installation.\n- [x] Retire replaced call-link records through the owning artifact epoch.\n- [x] Preserve rooted runtime fallback, side exits, exceptions, and tail-call semantics.\n- [x] Add writer/writer, reset/read, no-GIL, and TSan evidence.\n
Parent: #433\nBlocks: #429\n\nAdd real optimizer call-link metadata and concurrency-safe publication for call operations. Profiles remain advisory: every installed direct target must be revalidated at link time, guarded at use, and replaced/reset as one coherent record.\n\n## Acceptance\n\n- [x] Represent callee identity, target artifact generation, and entry as one immutable published record.\n- [x] Make concurrent slow-path writers converge without torn or lost publication.\n- [x] Revalidate the callee and target generation immediately before installation.\n- [x] Retire replaced call-link records through the owning artifact epoch.\n- [x] Preserve rooted runtime fallback, side exits, exceptions, and tail-call semantics.\n- [x] Add writer/writer, reset/read, no-GIL, and TSan evidence.\n