Annotates the v1.1.x design notes with the resolutions for the 20 open
calls — pub/sub split, universal outbox, NATS-style sync HTTP, status
code strategy, retry policy, dead-letter recursion-stop, realtime
auth model, frontend client library scope. Captured ahead of the
v1.1.1 implementation so the schema + API decisions in this branch
have a single load-bearing source of truth.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>