diff --git a/CLAUDE.md b/CLAUDE.md
index 22c765f..0dcf4c7 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -11,7 +11,7 @@ A Windows desktop app for running and arranging many WSL terminals at once. Buil
 
 ## Project-specific notes
 
-- **Stack:** Tauri 2 + Svelte 5 + TypeScript + Vite + pnpm + xterm.js + `portable-pty`. Mirrors `~/claude/projects/claude-usage-widget/` for toolchain choices.
+- **Stack:** Tauri 2 + React 18 + TypeScript + Vite + pnpm + xterm.js + `portable-pty`. Mirrors `~/claude/projects/claude-usage-widget/` for toolchain choices. (Originally Svelte 5; migrated to React in commit `774b863` — released as 0.2.0.)
 - **Build target:** Windows `.exe` only. Rust toolchain lives on the Windows host, not WSL.
 - **Source location:** `D:\dev\tiletopia\` (Windows-native NTFS). Symlinked into WSL at `~/claude/projects/tiletopia` for editing convenience, but **all pnpm and cargo commands must run on the Windows host** against the `D:\` path — never the `\\wsl.localhost\...` UNC path (pnpm 11.x crashes inside `isDriveExFat`, and the underlying error gets swallowed).
 - **Run:**
@@ -21,6 +21,6 @@ A Windows desktop app for running and arranging many WSL terminals at once. Buil
   pnpm tauri dev          # iterate
   pnpm tauri build        # NSIS installer at src-tauri\target\release\bundle\nsis\
   ```
-- **Validate in WSL:** `pnpm check` (svelte-check) runs in WSL and validates the Svelte/TS side without needing the Rust toolchain.
+- **Validate in WSL:** `pnpm check` (`tsc --noEmit`) runs in WSL and validates the React/TS side without needing the Rust toolchain.
 - **Plan reference:** `~/.claude/plans/imperative-coalescing-feigenbaum.md` — the approved plan that drove the scaffold and the full M0–M5 milestone roadmap.
 - **Archived idea history:** the brainstorm phase + full session log lives at `~/claude/archive/ideas/wsl-mux/plan.md`.