统一 strategy、key_monitor、trade、hub 等共用库到 lib/ 子包，并补充 lib-structure 文档，便于四所与中控维护。 Co-authored-by: Cursor <cursoragent@cursor.com>
Replace full-page soft nav with a persistent shell and /api/embed/page loads so tab switches in the hub iframe avoid document.write flicker. Co-authored-by: Cursor <cursoragent@cursor.com>
dekun