memory.md: fix Phase 2 verify command (cargo from src-tauri/, not root)

Tauri keeps the crate in src-tauri/; cargo check from the project root
fails with "could not find Cargo.toml". Caught by the user after I
suggested the wrong cd. Added a preflight-checks rule to global
~/claude/CLAUDE.md so this generalises.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

memory.md

@@ -86,7 +86,7 @@ Two big features the user asked for in one session. Three commits on `main`: `1a
 - **`WindowEvent::CloseRequested` closure captures `Arc<WindowsState>` and `Arc<PendingInits>` by move.** `windows_state_for_event.forget(label)` is the cleanup path; `pending_inits_for_event.by_label.lock().remove(&label)` removes any unconsumed init payload (the consumed-then-window-died case).
 
 **Phase 2 verification needed** (user, on Windows host):
-1. `cd D:\dev\tiletopia && cargo check` — the Rust changes have to compile. Watch for: tauri 2 `WebviewWindowBuilder::new` signature, `on_window_event` handler closure types, my `Arc<Self>` method receiver style on WindowsState.
+1. `cd D:\dev\tiletopia\src-tauri && cargo check` — the Rust changes have to compile. **Note: `Cargo.toml` lives in `src-tauri/`, NOT the project root** (Tauri layout). I got this wrong in the original verification steps; user had to point it out. Added a preflight-checks rule to global `~/claude/CLAUDE.md`. Watch in the check output for: tauri 2 `WebviewWindowBuilder::new` signature, `on_window_event` handler closure types, my `Arc<Self>` method receiver style on WindowsState.
 2. `pnpm tauri dev` — smoke test:
    - Existing workspace loads as one tab named "Default" ✓ migrate
    - Ctrl+T spawns new tab with default-shell pane