Proposal: Add review stage to glossary.md

What

Update the Lifecycle definition and add a Review stage entry in the glossary.

Why

The glossary is the canonical reference for terminology. It must include the new review stage so its meaning is clear and consistent across the system.

Spec

Change 1 — Update the Lifecycle definition.

Replace:

- **Lifecycle** — The flow an FR follows: new → planned → in-progress → done. Each stage corresponds to a folder in `vault/10_features/`.

With:

- **Lifecycle** — The flow an FR follows: new → planned → in-progress → review → done. Each stage corresponds to a folder in `vault/10_features/`.

Change 2 — Add Review stage definition after the “In Progress” line:

  - **Review** — Opus considers work complete. Awaiting user verification.

Impact

Only vault/00_system/docs/glossary.md is affected. Documentation-only change adding the review stage to the project glossary.