Why: Complete the authorized export entry while preserving current main project and session behavior.
Evidence: SELF full frontend tests and build, 263 unit tests; deferred browser races reproduced then all 6 passed. Raw records stay outside source until Dev task closure.
Impact: Export callbacks are invalidated on project, identity and unmount changes. Command readiness and current main security paths remain intact.
Refs: Dev PR #488; Frontend PR #73; user takeover authorization on 2026-10-14
