fix(app): refine mobile session layout (#32796)

packages/app/e2e/regression/review-line-comment.spec.ts

@@ -74,6 +74,7 @@ test("stages a submitted line comment in the prompt context", async ({ page }) =
   await review.locator('[data-slot="line-comment-action"][data-variant="primary"]').click()
 
   await expect(review.getByText("Use the existing value instead", { exact: true })).toBeVisible()
+  await page.getByRole("tab", { name: "Session" }).click()
   const context = page.getByText("Use the existing value instead", { exact: true }).last()
   await expect(context).toBeVisible()
   await expect(context.locator("..")).toContainText("review.ts:2")

packages/app/src/components/session/session-header.tsx

@@ -10,6 +10,7 @@ import { Tooltip, TooltipKeybind } from "@opencode-ai/ui/tooltip"
 import { getFilename } from "@opencode-ai/core/util/path"
 import { createEffect, createMemo, createSignal, For, onMount, Show } from "solid-js"
 import { createStore } from "solid-js/store"
+import { createMediaQuery } from "@solid-primitives/media"
 import { Portal } from "solid-js/web"
 import { useCommand } from "@/context/command"
 import { useLanguage } from "@/context/language"
@@ -158,6 +159,7 @@ export function SessionHeader() {
   const isV2 = settings.general.newLayoutDesigns
   const search = settings.visibility.search
   const status = settings.visibility.status
+  const isDesktop = createMediaQuery("(min-width: 768px)")
 
   const [exists, setExists] = createStore<Partial<Record<OpenApp, boolean>>>({
     finder: true,
@@ -236,6 +238,7 @@ export function SessionHeader() {
     statusLabel: language.t("status.popover.trigger"),
     reviewLabel: language.t("command.review.toggle"),
     reviewKeybind: command.keybind("review.toggle"),
+    reviewVisible: isDesktop(),
     reviewOpened: view().reviewPanel.opened(),
     onReviewToggle: () => view().reviewPanel.toggle(),
   }))
@@ -518,6 +521,7 @@ type SessionHeaderV2ActionsState = {
   statusLabel: string
   reviewLabel: string
   reviewKeybind: string
+  reviewVisible: boolean
   reviewOpened: boolean
   onReviewToggle: () => void
 }
@@ -530,6 +534,7 @@ function SessionHeaderV2Actions(props: { state: SessionHeaderV2ActionsState }) {
           <StatusPopoverV2 />
         </Tooltip>
       </Show>
+      <Show when={props.state.reviewVisible}>
         <TooltipKeybind title={props.state.reviewLabel} keybind={props.state.reviewKeybind}>
           <IconButtonV2
             type="button"
@@ -544,6 +549,7 @@ function SessionHeaderV2Actions(props: { state: SessionHeaderV2ActionsState }) {
             icon={<IconV2 name="sidebar-right" />}
           />
         </TooltipKeybind>
+      </Show>
     </div>
   )
 }

packages/app/src/pages/session.tsx

@@ -1568,6 +1568,31 @@ export default function Page() {
     />
   )
 
+  const mobileTabs = (compact = false) => (
+    <Tabs value={store.mobileTab} class="h-auto">
+      <Tabs.List class={compact ? "!h-9" : undefined}>
+        <Tabs.Trigger
+          value="session"
+          class="!w-1/2 !max-w-none"
+          classes={{ button: compact ? "w-full !py-2" : "w-full" }}
+          onClick={() => setStore("mobileTab", "session")}
+        >
+          {language.t("session.tab.session")}
+        </Tabs.Trigger>
+        <Tabs.Trigger
+          value="changes"
+          class="!w-1/2 !max-w-none !border-r-0"
+          classes={{ button: compact ? "w-full !py-2" : "w-full" }}
+          onClick={() => setStore("mobileTab", "changes")}
+        >
+          {hasReview()
+            ? language.t("session.review.filesChanged", { count: reviewCount() })
+            : language.t("session.review.change.other")}
+        </Tabs.Trigger>
+      </Tabs.List>
+    </Tabs>
+  )
+
   return (
     <div class="relative size-full overflow-hidden flex flex-col">
       {sessionSync() ?? ""}
@@ -1578,30 +1603,7 @@ export default function Page() {
           "gap-2 p-2": settings.general.newLayoutDesigns(),
         }}
       >
-        <Show when={!isDesktop() && !!params.id}>
+        <Show when={!isDesktop() && !!params.id && !settings.general.newLayoutDesigns()}>{mobileTabs()}</Show>
-          <Tabs value={store.mobileTab} class="h-auto">
-            <Tabs.List>
-              <Tabs.Trigger
-                value="session"
-                class="!w-1/2 !max-w-none"
-                classes={{ button: "w-full" }}
-                onClick={() => setStore("mobileTab", "session")}
-              >
-                {language.t("session.tab.session")}
-              </Tabs.Trigger>
-              <Tabs.Trigger
-                value="changes"
-                class="!w-1/2 !max-w-none !border-r-0"
-                classes={{ button: "w-full" }}
-                onClick={() => setStore("mobileTab", "changes")}
-              >
-                {hasReview()
-                  ? language.t("session.review.filesChanged", { count: reviewCount() })
-                  : language.t("session.review.change.other")}
-              </Tabs.Trigger>
-            </Tabs.List>
-          </Tabs>
-        </Show>
 
         <div
           classList={{
@@ -1620,6 +1622,9 @@ export default function Page() {
               "shadow-[var(--v2-elevation-raised)]": settings.general.newLayoutDesigns() && !!params.id,
             }}
           >
+            <Show when={!isDesktop() && !!params.id && settings.general.newLayoutDesigns()}>
+              {mobileTabs(true)}
+            </Show>
             <div class="flex-1 min-h-0 overflow-hidden">
               <Switch>
                 <Match when={params.id && mobileChanges()}>
@@ -1627,8 +1632,8 @@ export default function Page() {
                     {reviewContent({
                       diffStyle: "unified",
                       classes: {
-                        root: "pb-8",
+                        root: "pb-8 [&_[data-slot=session-review-list]]:pb-0",
-                        header: "px-4",
+                        header: "px-4 !h-16 !pb-4",
                         container: "px-4",
                       },
                       loadingClass: "px-4 py-4 text-text-weak",
@@ -1684,7 +1689,7 @@ export default function Page() {
               </Switch>
             </div>
 
-            <Show when={params.id || !newSessionDesign()}>{composerRegion("dock")}</Show>
+            <Show when={(params.id || !newSessionDesign()) && !mobileChanges()}>{composerRegion("dock")}</Show>
           </div>
 
           <Show when={desktopReviewOpen()}>

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

@@ -1300,7 +1300,9 @@ export function MessageTimeline(props: {
               "sticky top-0 z-30 bg-[linear-gradient(to_bottom,var(--background-stronger)_48px,transparent)]": true,
               "w-full": true,
               "pb-4": true,
-              "pl-2 pr-3 md:pl-4 md:pr-3": true,
+              "pr-3": true,
+              "pl-4": settings.general.newLayoutDesigns(),
+              "pl-2 md:pl-4": !settings.general.newLayoutDesigns(),
               "md:max-w-200 md:mx-auto 2xl:max-w-[1000px]": props.centered,
             }}
           >

packages/ui/src/components/session-review.tsx

@@ -386,7 +386,7 @@ export const SessionReview = (props: SessionReviewProps) => {
       >
         <div data-slot="session-review-container" class={props.classes?.container}>
           <Show when={hasDiffs()} fallback={props.empty}>
-            <div class="pb-6">
+            <div data-slot="session-review-list" class="pb-6">
               <Accordion multiple value={open()} onChange={handleChange}>
                 <For each={files()}>
                   {(file) => {