diff --git a/CLAUDE.md b/CLAUDE.md
index b88c081..b148f8a 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -27,12 +27,19 @@ inventor's own point is that it cannot be understood from prose alone.
 
 ## Current State
 
-- **Phase:** spec complete; implementation not started.
-- **Repo:** `git.sethpc.xyz/Seth/duplicate_chess`.
-- **Deploy target:** n/a — runs locally (`pnpm dev`).
+- **Phase:** v1 **implemented and merged to `main`** — the engine and the compass
+  UI are complete. Not yet manually browser-tested.
+- **Repo:** `git.sethpc.xyz/Seth/duplicate_chess` (`main`).
+- **Deploy target:** n/a — runs locally (`pnpm install && pnpm dev`).
 - **Stack:** Vite + Svelte 5 + TypeScript, `chess.js`. Single package; engine in
-  `src/engine/` (pure, DOM-free, vitest-tested), UI in `src/lib/`.
-- **Next:** implementation plan via the writing-plans skill, then build.
+  `src/engine/` (pure, DOM-free; 27 vitest tests passing), UI in `src/lib/`.
+- **Commands:** `pnpm dev` (run) · `pnpm build` · `pnpm test` (engine) ·
+  `pnpm exec svelte-check --tsconfig ./tsconfig.json` (typecheck).
+- **Known follow-ups (not blocking):** interactive browser test still pending (a
+  human task — `svelte-check` + manual is the design, see spec §8); history scrubbing
+  is view-only whereas spec §4.3 says truncate-on-move (deviation — confirm which to
+  keep); `deserialize` trusts the `player` field on replay; move log has no round
+  numbers. See the latest handoff in `.claude/handoffs/`.
 
 ## Conventions