Add Ctrl+Shift+double-click as a mouse alternative to move tab to new window

Plain double-click is already the word-selection gesture inside a
pane, so binding the new-window action there would break normal text
selection. Reusing the Ctrl+Shift modifier convention already proven
to work for the menu-open binding avoids that collision.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

wezterm.lua

@@ -863,6 +863,14 @@ config.mouse_bindings = {
 		mods = "CTRL",
 		action = act.OpenLinkAtMouseCursor,
 	},
+	{
+		-- 수정키 없는 더블클릭은 단어 선택 제스처라 겹치지 않게 Ctrl+Shift로 묶음
+		event = { Up = { streak = 2, button = "Left" } },
+		mods = "CTRL|SHIFT",
+		action = wezterm.action_callback(function(window, pane)
+			pane:move_to_new_window()
+		end),
+	},
 }
 
 -- [3] Quick select 패턴 추가 (기본 URL/git hash 외에 IP주소, K8s pod명 등 추가 가능)