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Follow-on design ticket from #5672 — its decomposition sketch names this as a separate design, and the parent's acceptance requires these tickets to be filed and linked. Filed in the 2026-11-04 gap pass (WS-F) so the design work exists and can be prioritised on its own merits; implementation timing is a separate decision, possibly months out.
What this design must settle
Subset snapshot plus scoped updates, existence privacy (a share must not leak what it does not include), and dangling-reference handling when a shared slice points outside itself.
Context from the parent
The parent design fixes the selective-sharing grants model, the existence-privacy rule, and the foreign data-store adapter contract. The parent issue carries the surrounding decisions this ticket must not re-decide; where this ticket's answer would change a parent decision, record that explicitly rather than silently forking it.
Decision record expected
Close this design with a recorded decision (on this issue or in a doc/ record linked from it): the chosen shape, the alternatives rejected and why, and the invariants implementation must hold. If the design splits further, file the splits and link them here rather than growing this issue.
Relations
Parent: #5672. Programme: epic #2056. Filed by WS-F (2026-11-04 ID design gap & expansion pass).
State resumed, not restarted: the preliminary protocol inventory for task 10609 (posted on this issue 2026-11-05T16:40:17Z by lane code-x) was verified present and still accurate against the unchanged gate; no dependent protocol detail was settled, per the packet.
Activity
developing-today commentedon Nov 5, 2026
CODE-1483
dezren39 commentedon Nov 5, 2026
🤖 Agent note · handed off
dezren39 commentedon Nov 5, 2026
🤖 Agent note · handed off
38 remaining items
dezren39 commentedon Nov 5, 2026
🤖 Agent note · parked — gate #5799 still unresolved
doc/record); then settle items 1–5 from the inventory into the id: design: partial replication protocol (from #5672) #5800 decision record.developing-today commentedon Nov 5, 2026
🤖 Agent note · parked — gate #5799 still unresolved (re-check)
dezren39 commentedon Nov 5, 2026
🤖 Agent note · parked