diff --git a/.gsd/STATE.md b/.gsd/STATE.md
index 50957b66d..8ec3ce6b2 100644
--- a/.gsd/STATE.md
+++ b/.gsd/STATE.md
@@ -1,17 +1,18 @@
 # GSD State
 
-**Active Milestone:** M001-1ya5a3 — GSD Studio MVP
-**Active Slice:** S01 — Electron Shell + Design System Foundation
-**Active Task:** none (slice not yet planned)
-**Phase:** Planning S01
+**Active Milestone:** M001-1ya5a3: GSD Studio MVP
+**Active Slice:** S01: Electron Shell + Design System Foundation
+**Phase:** executing
+**Requirements Status:** 12 active · 0 validated · 4 deferred · 2 out of scope
+
+## Milestone Registry
+- 🔄 **M001-1ya5a3:** GSD Studio MVP
 
 ## Recent Decisions
-- D001-D011: Full architecture, library, and convention decisions captured during discussion
-- Electron + Vite + React, Radix + Tailwind, Monaco, Shiki, Phosphor, Inter + JetBrains Mono
-- Dark monochrome + warm amber accent, continuous document flow, three-column resizable layout
+- None recorded
 
 ## Blockers
 - None
 
 ## Next Action
-Plan S01 — decompose into tasks, write S01-PLAN.md and task plans, then execute.
+Execute T01: Scaffold Electron project with electron-vite, React, Tailwind v4, and design system tokens.