Revert "fix(app): more startup efficiency (#18985)"

This reverts commit 98b3340cee.

packages/app/src/pages/home.tsx

@@ -113,14 +113,6 @@ export default function Home() {
             </ul>
           </div>
         </Match>
-        <Match when={!sync.ready}>
-          <div class="mt-30 mx-auto flex flex-col items-center gap-3">
-            <div class="text-12-regular text-text-weak">{language.t("common.loading")}</div>
-            <Button class="px-3" onClick={chooseProject}>
-              {language.t("command.project.open")}
-            </Button>
-          </div>
-        </Match>
         <Match when={true}>
           <div class="mt-30 mx-auto flex flex-col items-center gap-3">
             <Icon name="folder-add-left" size="large" />

packages/app/src/pages/session.tsx

@@ -1184,6 +1184,8 @@ export default function Page() {
     on(
       () => sdk.directory,
       () => {
+        void file.tree.list("")
+
         const tab = activeFileTab()
         if (!tab) return
         const path = file.pathFromTab(tab)
@@ -1638,9 +1640,6 @@ export default function Page() {
     sessionID: () => params.id,
     messagesReady,
     visibleUserMessages,
-    historyMore,
-    historyLoading,
-    loadMore: (sessionID) => sync.session.history.loadMore(sessionID),
     turnStart: historyWindow.turnStart,
     currentMessageId: () => store.messageId,
     pendingMessage: () => ui.pendingMessage,
@@ -1712,7 +1711,7 @@ export default function Page() {
           <div class="flex-1 min-h-0 overflow-hidden">
             <Switch>
               <Match when={params.id}>
-                <Show when={messagesReady()}>
+                <Show when={lastUserMessage()}>
                   <MessageTimeline
                     mobileChanges={mobileChanges()}
                     mobileFallback={reviewContent({

packages/app/src/pages/session/use-session-hash-scroll.ts

@@ -8,9 +8,6 @@ export const useSessionHashScroll = (input: {
   sessionID: () => string | undefined
   messagesReady: () => boolean
   visibleUserMessages: () => UserMessage[]
-  historyMore: () => boolean
-  historyLoading: () => boolean
-  loadMore: (sessionID: string) => Promise<void>
   turnStart: () => number
   currentMessageId: () => string | undefined
   pendingMessage: () => string | undefined
@@ -184,21 +181,6 @@ export const useSessionHashScroll = (input: {
     queue(() => scrollToMessage(msg, "auto"))
   })
 
-  createEffect(() => {
-    const sessionID = input.sessionID()
-    if (!sessionID || !input.messagesReady()) return
-
-    visibleUserMessages()
-
-    let targetId = input.pendingMessage()
-    if (!targetId && !clearing) targetId = messageIdFromHash(location.hash)
-    if (!targetId) return
-    if (messageById().has(targetId)) return
-    if (!input.historyMore() || input.historyLoading()) return
-
-    void input.loadMore(sessionID)
-  })
-
   onMount(() => {
     if (typeof window !== "undefined" && "scrollRestoration" in window.history) {
       window.history.scrollRestoration = "manual"