1. MVP is the content-change loop, not the full P0 feature list

Status: Accepted
Date: 2026-08-15

Context

PRD §7.1 lists plugin-install and site-build playbooks as P0 ("launch-blocking"), but IMPLEMENTATION.md schedules them into Phase 2 (Sprints 9–10). The two documents disagreed on what "P0" meant.

Decision

The MVP is the Phase 1 exit criterion only: a new user signs up, pairs a WordPress site, types "change the homepage heading", sees the change in a sandbox preview, and approves — in under five minutes.

Plugin-install, site-build, design picker, and multi-step workflows are explicitly deferred to Phase 2.

Options considered

Ship the full PRD P0 (plugin install + site build in the first release).
Thin vertical slice even smaller than Phase 1 (fixture-only, deploy stubbed).
Chosen: Phase 1 exit only.

Rejected

Full P0 — a plugin-install playbook requires the catalog, reputation gate, and egress watch (ADR 4) that are not built; shipping them prematurely reintroduces R2.
Thinner slice — deploy/rollback is the product's trust guarantee (R3); stubbing it hides the one thing that can break a live site.

Consequences

Clear, single exit test: e2e/phase1-exit-criteria.test.ts.
PRD §7.1 will be annotated to move plugin/site-build out of P0 (doc-sync follow-up).
Fewer parallel workstreams; content + deploy are the critical path.

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