fix(app): scroll jitter/loop

packages/app/src/pages/session/message-timeline.tsx

@@ -193,8 +193,7 @@ export function MessageTimeline(props: {
   onAutoScrollHandleScroll: () => void
   onMarkScrollGesture: (target?: EventTarget | null) => void
   hasScrollGesture: () => boolean
-  isDesktop: boolean
-  onScrollSpyScroll: () => void
+  onUserScroll: () => void
   onTurnBackfillScroll: () => void
   onAutoScrollInteraction: (event: MouseEvent) => void
   centered: boolean
@@ -205,8 +204,6 @@ export function MessageTimeline(props: {
   onLoadEarlier: () => void
   renderedUserMessages: UserMessage[]
   anchor: (id: string) => string
-  onRegisterMessage: (el: HTMLDivElement, id: string) => void
-  onUnregisterMessage: (id: string) => void
 }) {
   let touchGesture: number | undefined
 
@@ -574,9 +571,9 @@ export function MessageTimeline(props: {
             props.onScheduleScrollState(e.currentTarget)
             props.onTurnBackfillScroll()
             if (!props.hasScrollGesture()) return
+            props.onUserScroll()
             props.onAutoScrollHandleScroll()
             props.onMarkScrollGesture(e.currentTarget)
-            if (props.isDesktop) props.onScrollSpyScroll()
           }}
           onClick={props.onAutoScrollInteraction}
           class="relative min-w-0 w-full h-full"
@@ -763,10 +760,6 @@ export function MessageTimeline(props: {
                     <div
                       id={props.anchor(messageID)}
                       data-message-id={messageID}
-                      ref={(el) => {
-                        props.onRegisterMessage(el, messageID)
-                        onCleanup(() => props.onUnregisterMessage(messageID))
-                      }}
                       classList={{
                         "min-w-0 w-full max-w-full": true,
                         "md:max-w-200 2xl:max-w-[1000px]": props.centered,