test(subagent): rewrite continuation spec for activation lifecycle

Covers the inbox-acceptance return boundary, pre-acceptance rollback,
caller-signal ownership on both sides of acceptance, residency-only routing,
single-inbox FIFO ordering across parent and user origins, waiting wakeup with
a retained handle, cold resume without the historical parent, ownership
registration and release, child-first disposal, send-versus-dispose races,
durability failure without an ownership leak, per-epoch lifecycle pairing, and
the absence of cancellation, steering, and report surfaces.
This commit is contained in:
Dudu-0223
2026-07-30 13:31:02 +08:00
committed by Tianyi Cui
parent 26a117f842
commit 1c30548068

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