create mvp path

mvp/README.md

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+# mvp/ — the only three documents you need right now
+
+Everything else that used to live in `product/`, `docs/`, and the old `archive/` has been consolidated under
+[`archive/`](../archive/README.md) as historical/reference material. It is not required reading to answer
+"what's next" — these three files are:
+
+| File | Answers |
+| --- | --- |
+| [test-flows.md](test-flows.md) | "How do I manually test that X works?" — plain-language, click-by-click walkthroughs of every user journey, no engineering knowledge required. |
+| [blockers.md](blockers.md) | "What has to be fixed before this is a real product?" — what's broken today, and what must happen before real money/real users touch it. |
+| [forgotten-features.md](forgotten-features.md) | "What's missing that we haven't clearly scheduled?" — planning gaps that don't show up as an app bug, plus a short list of things already deliberately cut so they don't get re-litigated by accident. |
+
+> Last verified: 2026-08-02.