Goal

Set the v1 feature boundary (in/out) now that ADR-0006 locked the data-placement and space topology.

In scope (proposed)

• Signup (OAuth + XRPC + DNS ownership gate), custom + hosted-PDS + service domains
• Provisioning (postmaster records → Stalwart via Registry)
• Login (brokered atproto OAuth) + OIDC tokens + app passwords
• Webmail (fork) + app view (admin)
• Public at.sovrn.mail.service record at login

Out of scope / deferred (per ADR-0006 + docs/09)

• checkUserAccess managing-app hook + admin app-sharing UX (v2)
• GAL / roster-visibility flag (design later)
• Request→ratify member writes; per-user personal space; third-party client attestation
• Calendar/mail publication lexicons, open-calendar projection
• Multi-node Stalwart HA, paid tiers, E2EE

Deliverable

A single document (docs/roadmap-v1.md) or tracker comment listing the cut line, tied to Q2 (MVP cut line) and the Phase 0 exit gate (0d541aa).

Basis: docs/adr/0006-data-placement-and-space-topology.md, docs/09-open-questions.md.