diff --git a/apps/mobile/src/Stack.tsx b/apps/mobile/src/Stack.tsx
index ea46df3235f5835b3c9a9f5e5b9cbc9870e00f11..4dfa3f3a985698d9293a84c441834501b401a47b 100644
--- a/apps/mobile/src/Stack.tsx
+++ b/apps/mobile/src/Stack.tsx
@@ -51,6 +51,7 @@ import { useConnectOnboardingNavigation } from "./features/cloud/connectOnboardi
 import { AttachmentFileScreen } from "./features/files/AttachmentFileScreen";
 import { ThreadFilesTreeScreen, ThreadFileScreen } from "./features/files/ThreadFilesRouteScreen";
 import { AdaptiveWorkspaceLayout } from "./features/layout/AdaptiveWorkspaceLayout";
+import { selectedPullRequestKey } from "./features/pull-requests/pullRequestSelection";
 import {
   HardwareKeyboardCommandOverlay,
   HardwareKeyboardCommandProvider,
@@ -658,6 +659,7 @@ function RootStackLayout(props: {
           <AdaptiveWorkspaceLayout
             pathname={workspaceLocation.pathname}
             workspaceRouteKey={workspaceLocation.routeKey}
+            selectedPullRequestKey={selectedPullRequestKey(props.state)}
           >
             {props.children}
             <HardwareKeyboardCommandOverlay />
diff --git a/apps/mobile/src/features/layout/AdaptiveWorkspaceLayout.tsx b/apps/mobile/src/features/layout/AdaptiveWorkspaceLayout.tsx
index b750fd5f94a83869cb27d5c661ee895f03e2d198..b2981f63e2551bd3a694f460082e451dc2ee7f55 100644
--- a/apps/mobile/src/features/layout/AdaptiveWorkspaceLayout.tsx
+++ b/apps/mobile/src/features/layout/AdaptiveWorkspaceLayout.tsx
@@ -220,6 +220,7 @@ export function AdaptiveWorkspaceLayout(props: {
   readonly children: ReactNode;
   readonly pathname: string;
   readonly workspaceRouteKey: string | undefined;
+  readonly selectedPullRequestKey?: string | null;
 }) {
   const preferencesResult = useAtomValue(mobilePreferencesAtom);
   if (!AsyncResult.isSuccess(preferencesResult)) {
@@ -245,6 +246,7 @@ function AdaptiveWorkspaceLayoutContent(
     readonly children: ReactNode;
     readonly pathname: string;
     readonly workspaceRouteKey: string | undefined;
+    readonly selectedPullRequestKey?: string | null;
   } & {
     readonly projectGroupingMode: SidebarProjectGroupingMode;
     readonly savedThreadListFilters?: ThreadListFilters | undefined;
@@ -739,7 +741,10 @@ function AdaptiveWorkspaceLayoutContent(
                     />
                   )}
                 >
-                  <AndroidWorkspaceSidebar onRequestVisibility={revealPrimarySidebar}>
+                  <AndroidWorkspaceSidebar
+                    onRequestVisibility={revealPrimarySidebar}
+                    selectedPullRequestKey={props.selectedPullRequestKey ?? null}
+                  >
                     <AndroidHomeFabLayout sidebar onStartNewTask={handleStartNewTask}>
                       <ThreadNavigationSidebar
                         width={layout.listPaneWidth}
diff --git a/apps/mobile/src/features/pull-requests/PullRequestListRow.tsx b/apps/mobile/src/features/pull-requests/PullRequestListRow.tsx
index 5c2faca2b07efa1b3da37ecda27168f965bd45f6..7f59f2406d14cbe962447b956c25cbfea5831c7a 100644
--- a/apps/mobile/src/features/pull-requests/PullRequestListRow.tsx
+++ b/apps/mobile/src/features/pull-requests/PullRequestListRow.tsx
@@ -6,6 +6,11 @@ import { ControlPillMenu } from "../../components/ControlPillMenu";
 import type { ControlPillMenuProps } from "../../components/ControlPillMenu.types";
 import { cn } from "../../lib/cn";
 import { relativeTime } from "../../lib/time";
+import {
+  selectedThreadRowColors,
+  THREAD_LIST_V2_SIDEBAR_ROW_STYLE,
+  THREAD_LIST_V2_SIDEBAR_ROW_CONTAINER_STYLE,
+} from "../threads/thread-list-v2-row-appearance";
 import { PullRequestAvatar, PullRequestDiffStats } from "./PullRequestPresentation";
 import {
   pullRequestLabelColor,
@@ -20,11 +25,27 @@ export const PullRequestListRow = memo(
     readonly item: EnvironmentPullRequestListEntry;
     readonly onSelect: (item: EnvironmentPullRequestListEntry) => void;
     readonly selected: boolean;
+    readonly sidebar: boolean;
     readonly busy: boolean;
     readonly getActions: (item: EnvironmentPullRequestListEntry) => ControlPillMenuProps["actions"];
     readonly onAction: (item: EnvironmentPullRequestListEntry, action: string) => void;
   }) {
     const { item } = props;
+    const foreground = props.selected
+      ? selectedThreadRowColors.foregroundClassName
+      : props.sidebar
+        ? "text-drawer-foreground"
+        : "text-foreground";
+    const mutedForeground = props.selected
+      ? selectedThreadRowColors.mutedForegroundClassName
+      : props.sidebar
+        ? "text-drawer-foreground-muted"
+        : "text-foreground-muted";
+    const tertiaryForeground = props.selected
+      ? selectedThreadRowColors.mutedForegroundClassName
+      : props.sidebar
+        ? "text-drawer-foreground-muted"
+        : "text-foreground-tertiary";
     const status = pullRequestStatus(item);
     const review = pullRequestListReviewStatus(item);
     const checkTint =
@@ -34,123 +55,144 @@ export const PullRequestListRow = memo(
           ? "accent-danger-foreground"
           : "accent-warning-foreground";
     return (
-      <ControlPillMenu
-        shouldOpenOnLongPress
-        title={`#${item.number} · ${item.repository}`}
-        actions={props.getActions(item)}
-        onPressAction={({ nativeEvent }) => props.onAction(item, nativeEvent.event)}
-      >
-        <Pressable
-          accessibilityRole="button"
-          accessibilityState={{ selected: props.selected, busy: props.busy }}
-          accessibilityLabel={`Pull request ${item.number}, ${item.title}, ${status.label}, by ${item.author?.login ?? "unknown author"}${review ? `, ${review.accessibleLabel}` : ""}${item.checksState ? `, checks ${item.checksState}` : ""}${item.stack ? `, stack ${item.stack.position} of ${item.stack.size}` : ""}${item.labels.length ? `, ${item.labels.map((label) => label.name).join(", ")}` : ""}, ${item.additions} additions, ${item.deletions} deletions`}
-          accessibilityHint="Double tap to open. Touch and hold for quick actions."
-          onPress={() => props.onSelect(item)}
-          disabled={props.busy}
-          className={cn(
-            "flex-row gap-3 px-4 active:bg-row-hover",
-            props.selected && "bg-thread-selected",
-            props.busy && "opacity-50",
-          )}
+      <View style={props.sidebar ? THREAD_LIST_V2_SIDEBAR_ROW_CONTAINER_STYLE : undefined}>
+        <ControlPillMenu
+          shouldOpenOnLongPress
+          title={`#${item.number} · ${item.repository}`}
+          actions={props.getActions(item)}
+          onPressAction={({ nativeEvent }) => props.onAction(item, nativeEvent.event)}
         >
-          <View className="pt-2.5">
-            <SymbolView name={status.icon} size={20} tintColorClassName={status.tint} />
-          </View>
-          <View className="min-w-0 flex-1 gap-1 border-b border-border-subtle py-2.5">
-            <View className="flex-row items-center gap-1.5">
-              <PullRequestAvatar actor={item.author} size={16} />
-              <Text className="min-w-0 flex-1 text-xs text-foreground-muted" numberOfLines={1}>
-                {item.repository} <Text className="text-foreground-tertiary">#{item.number}</Text>
-              </Text>
-              {item.stack ? (
-                <View className="flex-row items-center gap-1">
-                  <SymbolView
-                    name="square.3.layers.3d"
-                    size={12}
-                    tintColorClassName="accent-icon-muted"
-                  />
-                  <Text className="text-2xs tabular-nums text-foreground-muted">
-                    {item.stack.position}/{item.stack.size}
-                  </Text>
-                </View>
-              ) : null}
-              <Text className="text-2xs tabular-nums text-foreground-tertiary">
-                {relativeTime(item.updatedAt)}
-              </Text>
+          <Pressable
+            accessibilityRole="button"
+            accessibilityState={{ selected: props.selected, busy: props.busy }}
+            accessibilityLabel={`Pull request ${item.number}, ${item.title}, ${status.label}, by ${item.author?.login ?? "unknown author"}${review ? `, ${review.accessibleLabel}` : ""}${item.checksState ? `, checks ${item.checksState}` : ""}${item.stack ? `, stack ${item.stack.position} of ${item.stack.size}` : ""}${item.labels.length ? `, ${item.labels.map((label) => label.name).join(", ")}` : ""}, ${item.additions} additions, ${item.deletions} deletions`}
+            accessibilityHint="Double tap to open. Touch and hold for quick actions."
+            onPress={() => props.onSelect(item)}
+            disabled={props.busy}
+            style={props.sidebar ? THREAD_LIST_V2_SIDEBAR_ROW_STYLE : undefined}
+            className={cn(
+              "flex-row gap-3 overflow-hidden",
+              !props.sidebar && "px-4 active:bg-row-hover",
+              props.sidebar && "bg-drawer",
+              props.sidebar && !props.selected && "active:bg-thread-hover",
+              props.selected && "bg-thread-selected",
+              props.busy && "opacity-50",
+            )}
+          >
+            <View className={props.sidebar ? "pt-0.5" : "pt-2.5"}>
+              <SymbolView name={status.icon} size={20} tintColorClassName={status.tint} />
             </View>
-            <Text
-              className="text-base leading-5 font-t3-medium text-foreground"
-              numberOfLines={2}
-              ellipsizeMode="tail"
+            <View
+              className={cn(
+                "min-w-0 flex-1 gap-1",
+                !props.sidebar && "border-b border-border-subtle py-2.5",
+              )}
             >
-              {item.title}
-            </Text>
-            <View className="flex-row items-center gap-1.5">
-              <View className="min-w-0 flex-1 flex-row items-center gap-1">
-                {item.labels.slice(0, 2).map((label) => {
-                  const color = pullRequestLabelColor(label.color);
-                  return (
-                    <View
-                      key={label.name}
-                      className="min-w-0 shrink flex-row items-center gap-1 rounded-md bg-subtle px-1.5 py-0.5"
-                      style={{ maxWidth: 160, ...(color ? { backgroundColor: `${color}20` } : {}) }}
-                    >
-                      {color ? (
-                        <View
-                          style={{ width: 5, height: 5, borderRadius: 3, backgroundColor: color }}
-                        />
-                      ) : null}
-                      <Text
-                        className="shrink text-2xs font-t3-medium text-foreground-muted"
-                        numberOfLines={1}
+              <View className="flex-row items-center gap-1.5">
+                <PullRequestAvatar actor={item.author} size={16} />
+                <Text className={cn("min-w-0 flex-1 text-xs", mutedForeground)} numberOfLines={1}>
+                  {item.repository} <Text className={tertiaryForeground}>#{item.number}</Text>
+                </Text>
+                {item.stack ? (
+                  <View className="flex-row items-center gap-1">
+                    <SymbolView
+                      name="square.3.layers.3d"
+                      size={12}
+                      tintColorClassName={
+                        props.selected
+                          ? selectedThreadRowColors.mutedIconTintClassName
+                          : props.sidebar
+                            ? "accent-drawer-foreground-muted"
+                            : "accent-foreground-muted"
+                      }
+                    />
+                    <Text className={cn("text-2xs tabular-nums", mutedForeground)}>
+                      {item.stack.position}/{item.stack.size}
+                    </Text>
+                  </View>
+                ) : null}
+                <Text className={cn("text-2xs tabular-nums", tertiaryForeground)}>
+                  {relativeTime(item.updatedAt)}
+                </Text>
+              </View>
+              <Text
+                className={cn("text-base leading-5 font-t3-medium", foreground)}
+                numberOfLines={2}
+                ellipsizeMode="tail"
+              >
+                {item.title}
+              </Text>
+              <View className="flex-row items-center gap-1.5">
+                <View className="min-w-0 flex-1 flex-row items-center gap-1">
+                  {item.labels.slice(0, 2).map((label) => {
+                    const color = pullRequestLabelColor(label.color);
+                    return (
+                      <View
+                        key={label.name}
+                        className="min-w-0 shrink flex-row items-center gap-1 rounded-md bg-subtle px-1.5 py-0.5"
+                        style={{
+                          maxWidth: 160,
+                          ...(color ? { backgroundColor: `${color}20` } : {}),
+                        }}
                       >
-                        {label.name}
-                      </Text>
-                    </View>
-                  );
-                })}
-                {item.labels.length > 2 ? (
-                  <Text className="shrink-0 text-2xs text-foreground-tertiary">
-                    +{item.labels.length - 2}
-                  </Text>
+                        {color ? (
+                          <View
+                            style={{ width: 5, height: 5, borderRadius: 3, backgroundColor: color }}
+                          />
+                        ) : null}
+                        <Text
+                          className={cn("shrink text-2xs font-t3-medium", mutedForeground)}
+                          numberOfLines={1}
+                        >
+                          {label.name}
+                        </Text>
+                      </View>
+                    );
+                  })}
+                  {item.labels.length > 2 ? (
+                    <Text className={cn("shrink-0 text-2xs", tertiaryForeground)}>
+                      +{item.labels.length - 2}
+                    </Text>
+                  ) : null}
+                </View>
+                {item.checksState ? (
+                  <View className="shrink-0" accessibilityLabel={`Checks ${item.checksState}`}>
+                    <SymbolView
+                      name={
+                        item.checksState === "passing"
+                          ? "checkmark.circle"
+                          : item.checksState === "failing"
+                            ? "xmark.circle.fill"
+                            : "clock"
+                      }
+                      size={13}
+                      tintColorClassName={checkTint}
+                    />
+                  </View>
                 ) : null}
-              </View>
-              {item.checksState ? (
-                <View className="shrink-0" accessibilityLabel={`Checks ${item.checksState}`}>
-                  <SymbolView
-                    name={
-                      item.checksState === "passing"
-                        ? "checkmark.circle"
-                        : item.checksState === "failing"
-                          ? "xmark.circle.fill"
-                          : "clock"
-                    }
-                    size={13}
-                    tintColorClassName={checkTint}
+                {review ? (
+                  <View className="shrink-0" accessibilityLabel={review.accessibleLabel}>
+                    <SymbolView name={review.icon} size={13} tintColorClassName={review.tint} />
+                  </View>
+                ) : null}
+                {item.additions || item.deletions ? (
+                  <PullRequestDiffStats
+                    additions={item.additions}
+                    deletions={item.deletions}
+                    compact
                   />
-                </View>
-              ) : null}
-              {review ? (
-                <View className="shrink-0" accessibilityLabel={review.accessibleLabel}>
-                  <SymbolView name={review.icon} size={13} tintColorClassName={review.tint} />
-                </View>
-              ) : null}
-              {item.additions || item.deletions ? (
-                <PullRequestDiffStats
-                  additions={item.additions}
-                  deletions={item.deletions}
-                  compact
-                />
-              ) : null}
+                ) : null}
+              </View>
             </View>
-          </View>
-        </Pressable>
-      </ControlPillMenu>
+          </Pressable>
+        </ControlPillMenu>
+      </View>
     );
   },
   (previous, next) =>
     pullRequestListRowsAreEqual(previous.item, next.item) &&
     previous.selected === next.selected &&
+    previous.sidebar === next.sidebar &&
     previous.busy === next.busy &&
     previous.onSelect === next.onSelect &&
     previous.onAction === next.onAction &&
diff --git a/apps/mobile/src/features/pull-requests/PullRequestsScreen.tsx b/apps/mobile/src/features/pull-requests/PullRequestsScreen.tsx
index 5120db3d8508a8530e062848f10263363c72c2b0..c90cdc98e50155a8b865314f66a451f5010a5f3a 100644
--- a/apps/mobile/src/features/pull-requests/PullRequestsScreen.tsx
+++ b/apps/mobile/src/features/pull-requests/PullRequestsScreen.tsx
@@ -53,7 +53,12 @@ function PullRequestScrollView(props: ScrollViewProps) {
   );
 }
 
-export function PullRequestsScreen() {
+export function PullRequestsScreen(
+  props: {
+    readonly sidebar?: boolean;
+    readonly selectedPullRequestKey?: string | null;
+  } = {},
+) {
   const navigation = useNavigation();
   const primaryColumn = use(NativePrimaryColumnContext);
   const workspace = useWorkspaceTabs()!;
@@ -135,7 +140,8 @@ export function PullRequestsScreen() {
     connectedTargets.map((target) => target.environmentId),
     result.updateEntry,
   );
-  const selectedKey = primaryColumn?.selectedPullRequestKey;
+  const sidebar = props.sidebar === true || primaryColumn !== null;
+  const selectedKey = props.selectedPullRequestKey ?? primaryColumn?.selectedPullRequestKey;
   const entries = useMemo(
     () =>
       filterPullRequestList(
@@ -179,9 +185,10 @@ export function PullRequestsScreen() {
         onAction={select}
         busy={busyKey === pullRequestKey(item)}
         selected={selectedKey === pullRequestKey(item)}
+        sidebar={sidebar}
       />
     ),
-    [selectPullRequest, selectedKey, actions, select, busyKey],
+    [selectPullRequest, selectedKey, actions, select, busyKey, sidebar],
   );
   const previousSearchMode = useRef(tab.searchMode);
   useEffect(() => {
@@ -199,11 +206,11 @@ export function PullRequestsScreen() {
     : -1;
 
   return (
-    <View className={primaryColumn ? "flex-1 bg-drawer" : "flex-1 bg-screen"}>
+    <View className={sidebar ? "flex-1 bg-drawer" : "flex-1 bg-screen"}>
       <LegendList
         ref={listRef}
         data={entries}
-        extraData={`${primaryColumn?.selectedPullRequestKey}:${busyKey}`}
+        extraData={`${selectedKey}:${busyKey}`}
         keyExtractor={pullRequestKey}
         itemsAreEqual={pullRequestListRowsAreEqual}
         // Default-size rows measure about 78pt with one title line and 98pt with two.
diff --git a/apps/mobile/src/features/pull-requests/pullRequestSelection.test.ts b/apps/mobile/src/features/pull-requests/pullRequestSelection.test.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fa950a8beeb7a6b6bd1d02822208a24d2ba25937
--- /dev/null
+++ b/apps/mobile/src/features/pull-requests/pullRequestSelection.test.ts
@@ -0,0 +1,80 @@
+import { describe, expect, it } from "vite-plus/test";
+import type { NavigationState } from "@react-navigation/native";
+import { selectedPullRequestKey } from "./pullRequestSelection";
+
+const params = {
+  environmentId: "environment-one",
+  projectId: "project-one",
+  host: "GitHub.COM",
+  repository: "Org/Repo",
+  number: 42,
+};
+const home = { key: "home", name: "Home" };
+const pullRequest = { key: "pr", name: "PullRequest", params };
+function selection(routes: NavigationState["routes"], index = routes.length - 1) {
+  return selectedPullRequestKey({ routes, index });
+}
+
+describe("displayed pull request selection", () => {
+  it("normalizes repository and host while retaining the environment scope", () => {
+    expect(selection([home, pullRequest])).toBe("environment-one:github.com:org/repo:42");
+    expect(
+      selection([
+        home,
+        { ...pullRequest, params: { ...params, environmentId: "environment-two" } },
+      ]),
+    ).toBe("environment-two:github.com:org/repo:42");
+  });
+
+  it.each([
+    "PullRequestFile",
+    "PullRequestFiles",
+    "PullRequestGuideStop",
+    "PullRequestDiscussion",
+    "PullRequestReviewers",
+    "PullRequestReview",
+    "PullRequestInlineComment",
+  ])("keeps the owning selection on %s", (name) => {
+    expect(selection([home, pullRequest, { key: name, name, params }])).toBe(
+      "environment-one:github.com:org/repo:42",
+    );
+  });
+
+  it("uses the most recently opened PR, including a different hosting service", () => {
+    expect(
+      selection([
+        home,
+        pullRequest,
+        {
+          key: "other-pr",
+          name: "PullRequest",
+          params: { ...params, host: "github.enterprise", repository: "Other/Repo", number: 7 },
+        },
+      ]),
+    ).toBe("environment-one:github.enterprise:other/repo:7");
+  });
+
+  it.each(["Home", "Thread", "ThreadFiles"])("clears an older selection on %s", (name) => {
+    expect(selection([home, pullRequest, { key: "current", name }])).toBeNull();
+  });
+
+  it("ignores inactive routes after the navigation index", () => {
+    expect(selection([home, pullRequest], 0)).toBeNull();
+  });
+
+  it("retains the owning PR behind an unrelated overlay", () => {
+    expect(selection([home, pullRequest, { key: "settings", name: "SettingsSheet" }])).toBe(
+      "environment-one:github.com:org/repo:42",
+    );
+  });
+
+  it("does not highlight an older PR when the current PR lacks its hosting identity", () => {
+    expect(
+      selection([
+        home,
+        pullRequest,
+        { key: "unresolved", name: "PullRequest", params: { environmentId: "environment-one" } },
+      ]),
+    ).toBeNull();
+  });
+});
diff --git a/apps/mobile/src/features/pull-requests/pullRequestSelection.ts b/apps/mobile/src/features/pull-requests/pullRequestSelection.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fa31d1de91601c261ee504a67b46d172b5d25e48
--- /dev/null
+++ b/apps/mobile/src/features/pull-requests/pullRequestSelection.ts
@@ -0,0 +1,32 @@
+import type { NavigationState } from "@react-navigation/native";
+import { pullRequestListKey } from "./pullRequestList";
+
+/** Follow the displayed PR through its detail routes and sheets, not an older stack entry. */
+export function selectedPullRequestKey(state: Pick<NavigationState, "routes" | "index">) {
+  for (let index = state.index; index >= 0; index--) {
+    const route = state.routes[index];
+    if (!route) continue;
+    if (route.name === "Home" || route.name.startsWith("Thread")) return null;
+    if (!route.name.startsWith("PullRequest")) continue;
+    const params = route.params;
+    if (
+      params &&
+      "environmentId" in params &&
+      "host" in params &&
+      "repository" in params &&
+      "number" in params &&
+      typeof params.environmentId === "string" &&
+      typeof params.host === "string" &&
+      typeof params.repository === "string" &&
+      typeof params.number === "number"
+    ) {
+      return `${params.environmentId}:${pullRequestListKey({
+        host: params.host,
+        repository: params.repository,
+        number: params.number,
+      })}`;
+    }
+    if (route.name === "PullRequest") return null;
+  }
+  return null;
+}
diff --git a/apps/mobile/src/features/threads/thread-list-v2-row-appearance.android.ts b/apps/mobile/src/features/threads/thread-list-v2-row-appearance.android.ts
index 8be6b240755dbe52597d62d0e4a293d3013749a5..c63d327764cb6e8bc68539336cb58f894594d9c5 100644
--- a/apps/mobile/src/features/threads/thread-list-v2-row-appearance.android.ts
+++ b/apps/mobile/src/features/threads/thread-list-v2-row-appearance.android.ts
@@ -4,6 +4,17 @@ import type { MobileThemeVariables } from "../../lib/mobileTheme";
 export const THREAD_LIST_V2_MONO_FONT = "monospace";
 export const THREAD_LIST_V2_ROW_CONTENT_CLASS_NAME = "px-3 py-2.5";
 export const THREAD_LIST_V2_ROW_DIVIDERS = false;
+export const THREAD_LIST_V2_SIDEBAR_ROW_STYLE = {
+  borderRadius: 20,
+  paddingHorizontal: 12,
+  paddingVertical: 10,
+} satisfies ViewStyle;
+export const THREAD_LIST_V2_SIDEBAR_ROW_CONTAINER_STYLE = {
+  borderRadius: 20,
+  overflow: "hidden",
+  marginHorizontal: 8,
+  marginVertical: 2,
+} satisfies ViewStyle;
 
 export const selectedThreadRowColors = {
   foregroundClassName: "text-thread-selected-foreground",
@@ -25,14 +36,9 @@ export function getThreadListV2RowAppearance(
   const backgroundColor = theme[sidebarPane ? "--color-drawer" : "--color-screen"];
   const style: ViewStyle = {
     backgroundColor: selected ? selectedBackgroundColor : backgroundColor,
-    borderRadius: 20,
-  };
-  const swipeContainerStyle: ViewStyle = {
-    borderRadius: 20,
-    overflow: "hidden",
-    marginHorizontal: 8,
-    marginVertical: 2,
+    borderRadius: THREAD_LIST_V2_SIDEBAR_ROW_STYLE.borderRadius,
   };
+  const swipeContainerStyle = THREAD_LIST_V2_SIDEBAR_ROW_CONTAINER_STYLE;
 
   return {
     className: undefined,
@@ -52,7 +58,7 @@ export function getThreadListV2RowAppearance(
       ? "accent-drawer-foreground-muted"
       : "accent-foreground-tertiary",
     style,
-    cardStyle: sidebarPane ? { ...style, paddingHorizontal: 12, paddingVertical: 10 } : style,
+    cardStyle: sidebarPane ? { ...style, ...THREAD_LIST_V2_SIDEBAR_ROW_STYLE } : style,
     swipeContainerStyle,
     swipeBackgroundColor: backgroundColor,
     providerIconSurfaceColor: selected ? selectedBackgroundColor : backgroundColor,
diff --git a/apps/mobile/src/features/threads/thread-list-v2-row-appearance.ts b/apps/mobile/src/features/threads/thread-list-v2-row-appearance.ts
index b73f87b86a2ad45c5922430595a3b537e3cb2bac..1b63ff57d65f4d01be76cdfc207fd603ec5672bc 100644
--- a/apps/mobile/src/features/threads/thread-list-v2-row-appearance.ts
+++ b/apps/mobile/src/features/threads/thread-list-v2-row-appearance.ts
@@ -4,6 +4,15 @@ import type { MobileThemeVariables } from "../../lib/mobileTheme";
 export const THREAD_LIST_V2_MONO_FONT = "Menlo";
 export const THREAD_LIST_V2_ROW_CONTENT_CLASS_NAME = "px-5 py-2.5";
 export const THREAD_LIST_V2_ROW_DIVIDERS = true;
+export const THREAD_LIST_V2_SIDEBAR_ROW_STYLE = {
+  borderRadius: 12,
+  paddingHorizontal: 12,
+  paddingVertical: 10,
+} satisfies ViewStyle;
+export const THREAD_LIST_V2_SIDEBAR_ROW_CONTAINER_STYLE = {
+  borderRadius: 12,
+  overflow: "hidden",
+} satisfies ViewStyle;
 
 export const selectedThreadRowColors = {
   foregroundClassName: "text-thread-selected-foreground",
@@ -25,11 +34,11 @@ export function getThreadListV2RowAppearance(
   const style: ViewStyle | undefined = sidebarPane
     ? {
         backgroundColor: selected ? selectedBackgroundColor : theme["--color-drawer"],
-        borderRadius: 12,
+        borderRadius: THREAD_LIST_V2_SIDEBAR_ROW_STYLE.borderRadius,
       }
     : undefined;
   const swipeContainerStyle: ViewStyle | undefined = sidebarPane
-    ? { borderRadius: 12, overflow: "hidden" }
+    ? THREAD_LIST_V2_SIDEBAR_ROW_CONTAINER_STYLE
     : undefined;
 
   return {
@@ -50,7 +59,7 @@ export function getThreadListV2RowAppearance(
       ? "accent-drawer-foreground-muted"
       : "accent-foreground-tertiary",
     style,
-    cardStyle: sidebarPane ? { ...style, paddingHorizontal: 12, paddingVertical: 10 } : undefined,
+    cardStyle: sidebarPane ? { ...style, ...THREAD_LIST_V2_SIDEBAR_ROW_STYLE } : undefined,
     swipeContainerStyle,
     swipeBackgroundColor: theme[sidebarPane ? "--color-drawer" : "--color-screen"],
     // Provider badges blend into the surface beneath them.
diff --git a/apps/mobile/src/features/workspace/AndroidWorkspaceSidebar.android.tsx b/apps/mobile/src/features/workspace/AndroidWorkspaceSidebar.android.tsx
index 8d65314da12d5fa9ad52e83cd4b4eba71260376c..711f8cbae5aa91cad07f069d428d27934dc39ae6 100644
--- a/apps/mobile/src/features/workspace/AndroidWorkspaceSidebar.android.tsx
+++ b/apps/mobile/src/features/workspace/AndroidWorkspaceSidebar.android.tsx
@@ -8,6 +8,7 @@ import { WorkspaceTabsContext, useWorkspaceTabs } from "./WorkspaceTabsContext";
 export function AndroidWorkspaceSidebar(props: {
   readonly children: ReactNode;
   readonly onRequestVisibility: () => void;
+  readonly selectedPullRequestKey: string | null;
 }) {
   const workspace = useWorkspaceTabs()!;
   const context = useMemo(() => ({ ...workspace, bottomClearance: 16 }), [workspace]);
@@ -18,7 +19,7 @@ export function AndroidWorkspaceSidebar(props: {
       <View className="flex-1 bg-header">
         <MaterialPullRequestToolbar onRequestVisibility={props.onRequestVisibility} />
         <MaterialScreenContent insetHorizontal>
-          <PullRequestsScreen />
+          <PullRequestsScreen sidebar selectedPullRequestKey={props.selectedPullRequestKey} />
         </MaterialScreenContent>
       </View>
     </WorkspaceTabsContext>
diff --git a/apps/mobile/src/features/workspace/AndroidWorkspaceSidebar.tsx b/apps/mobile/src/features/workspace/AndroidWorkspaceSidebar.tsx
index b31fadadbce22d94a235e423fa40df7a675db603..6dbfa1cfa949c5f42aa4b29494d52d464553c281 100644
--- a/apps/mobile/src/features/workspace/AndroidWorkspaceSidebar.tsx
+++ b/apps/mobile/src/features/workspace/AndroidWorkspaceSidebar.tsx
@@ -3,6 +3,7 @@ import type { ReactNode } from "react";
 export function AndroidWorkspaceSidebar(props: {
   readonly children: ReactNode;
   readonly onRequestVisibility: () => void;
+  readonly selectedPullRequestKey: string | null;
 }) {
   return props.children;
 }