Task — engineering-spec@1

"Notification extras: offline email digest, delivery-ticks decision, Zalo/SMS bridge spike"

draftTASK-CHAT-263
module chat · class product · priority p1 · created 2026-07-08 · shipped null
depends on TASK-CHAT-223 · blocks none

TASK-CHAT-263: Notification extras: offline email digest, delivery-ticks decision, Zalo/SMS bridge spike

1. Description

Author the normative clauses when this task is picked up; it was migrated as a draft stub.

Migrated 2026-07-08 from the chat improvement backlog, folded into the task system as class: improvement. Source report refs: C43, C44, C45.

Acceptance criteria