fix: persist maximize + corners as free placement (exact size/pos), edges as dock

src/ui.tsx

@@ -215,6 +215,9 @@ function Plugin () {
             width: window.innerWidth,
             height: window.innerHeight
           })
+          // Maximize is NOT a held dock — persist the exact size+position so re-open
+          // restores it (overrides the edge-dock save done by DOCK_REFINE above).
+          emit('SAVE_FREE')
           refreshInfo()
         })
       })