diff --git a/memory.md b/memory.md
index a2d53d2..72ba11f 100644
--- a/memory.md
+++ b/memory.md
@@ -209,6 +209,7 @@ Smoke test on Windows revealed bugs specific to detached (non-main) windows. Mai
 - **Window position persistence across restart.** User chose "tabs persist, not windows" in the design Q&A so this is by design, but if a power user ever wants restored window geometry, the `WindowsState` map already has the structure to track it; just add inner_size/outer_position to the per-window entry.
 - **Drag-out across monitors with mismatched DPI.** Tauri 2's `outerPosition()` is physical px while `clientX/Y` is CSS px. My implementation only uses clientX/Y (no async query at drag start), so multi-monitor drag works as long as the user releases far enough from the source window's edge. New window appears at the OS default position; user manually drags it to the target monitor. Acceptable v1.
 - **Drag a pane INTO an existing other window.** Only NEW-window drag in v1. Adding "drag to existing window" needs cross-window pointer-event coordination (Tauri 2 doesn't expose this). Defer.
+- **Reattach window to an existing window** (user request 2026-05-28). The inverse of drag-out: take a detached window's pane(s) and merge them back into another open window as new tab(s) or splits, then close the now-empty source window. Same hard problem as the pane-into-window item above — Tauri 2 doesn't expose cross-window pointer drag, so this likely needs a non-drag affordance instead: e.g. a "Send to window ▸ <pick target>" entry in the pane toolbar right-click menu (reuses the existing PTY-transfer path — `mark_pane_transferring` → target adopts via `existingPaneId`/`claim_pane` — just targeting an existing window's label instead of `create_pane_window`). Needs a live window/label registry the menu can list. Defer.
 - **CLAUDE.md still says Svelte 5** (called out in 5+ session logs now). Bump it next time someone touches the file.
 
 ### 2026-05-26 — **v0.3.0 shipped to Forgejo releases**