feat(mobile): Add highlights page to mobile app (#2156)

* feat: Add highlights page to mobile app

This commit adds a new highlights page to the mobile app where users can
view all their highlights with the following features:

- HighlightCard component: Displays individual highlights with colored borders,
  text, optional notes, timestamps, and a link to the source bookmark
- HighlightList component: Renders a scrollable list of highlights with
  pull-to-refresh and infinite scroll pagination
- UpdatingHighlightList component: Handles data fetching using tRPC infinite
  queries with automatic cache invalidation
- New /dashboard/highlights route with large header title
- Added navigation link in Settings tab under "App Settings"

All components follow the existing mobile app patterns and integrate with
the existing highlights API.

* make it a tab

---------

Co-authored-by: Claude <noreply@anthropic.com>

2 files changed, 70 insertions, 1 deletions

diff --git a/apps/mobile/app/dashboard/(tabs)/_layout.tsx b/apps/mobile/app/dashboard/(tabs)/_layout.tsx
index 316eddcf..5cc6aa92 100644
--- a/apps/mobile/app/dashboard/(tabs)/_layout.tsx
+++ b/apps/mobile/app/dashboard/(tabs)/_layout.tsx
@@ -2,7 +2,13 @@ import React, { useLayoutEffect } from "react";
 import { Tabs, useNavigation } from "expo-router";
 import { StyledTabs } from "@/components/navigation/tabs";
 import { useColorScheme } from "@/lib/useColorScheme";
-import { ClipboardList, Home, Settings, Tag } from "lucide-react-native";
+import {
+  ClipboardList,
+  Highlighter,
+  Home,
+  Settings,
+  Tag,
+} from "lucide-react-native";
 
 export default function TabLayout() {
   const { colors } = useColorScheme();
@@ -45,6 +51,13 @@ export default function TabLayout() {
         }}
       />
       <Tabs.Screen
+        name="highlights"
+        options={{
+          title: "Highlights",
+          tabBarIcon: ({ color }) => <Highlighter color={color} />,
+        }}
+      />
+      <Tabs.Screen
         name="settings"
         options={{
           title: "Settings",
diff --git a/apps/mobile/app/dashboard/(tabs)/highlights.tsx b/apps/mobile/app/dashboard/(tabs)/highlights.tsx
new file mode 100644
index 00000000..7879081b
--- /dev/null
+++ b/apps/mobile/app/dashboard/(tabs)/highlights.tsx
@@ -0,0 +1,56 @@
+import { View } from "react-native";
+import FullPageError from "@/components/FullPageError";
+import HighlightList from "@/components/highlights/HighlightList";
+import CustomSafeAreaView from "@/components/ui/CustomSafeAreaView";
+import FullPageSpinner from "@/components/ui/FullPageSpinner";
+import PageTitle from "@/components/ui/PageTitle";
+
+import { api } from "@karakeep/shared-react/trpc";
+
+export default function Highlights() {
+  const apiUtils = api.useUtils();
+  const {
+    data,
+    isPending,
+    isPlaceholderData,
+    error,
+    fetchNextPage,
+    isFetchingNextPage,
+    refetch,
+  } = api.highlights.getAll.useInfiniteQuery(
+    {},
+    {
+      initialCursor: null,
+      getNextPageParam: (lastPage) => lastPage.nextCursor,
+    },
+  );
+
+  if (error) {
+    return <FullPageError error={error.message} onRetry={() => refetch()} />;
+  }
+
+  if (isPending || !data) {
+    return <FullPageSpinner />;
+  }
+
+  const onRefresh = () => {
+    apiUtils.highlights.getAll.invalidate();
+  };
+
+  return (
+    <CustomSafeAreaView>
+      <HighlightList
+        highlights={data.pages.flatMap((p) => p.highlights)}
+        header={
+          <View className="flex flex-row justify-between">
+            <PageTitle title="Highlights" />
+          </View>
+        }
+        onRefresh={onRefresh}
+        fetchNextPage={fetchNextPage}
+        isFetchingNextPage={isFetchingNextPage}
+        isRefreshing={isPending || isPlaceholderData}
+      />
+    </CustomSafeAreaView>
+  );
+}