refactor: 重构tabs栏

app/(tabs)/_layout.tsx

@@ -1,10 +1,13 @@
 import { Tabs } from 'expo-router';
+import Ionicons from "@expo/vector-icons/MaterialIcons"
 
 export default function TabLayout() {
   return (
     <Tabs>
-      <Tabs.Screen name="index" options={{ title: 'Home' }} />
-      <Tabs.Screen name="about" options={{ title: 'About' }} />
+      <Tabs.Screen name="index" options={{ title: '消息', tabBarIcon: ({ color }) => <Ionicons size={28} name="message" color={color} /> }} />
+      <Tabs.Screen name="contacts" options={{ title: '通讯录', tabBarIcon: ({ color }) => <Ionicons size={28} name="assignment-ind" color={color} /> }} />
+      <Tabs.Screen name="discover" options={{ title: '发现', tabBarIcon: ({ color }) => <Ionicons size={28} name="compass-calibration" color={color} /> }} />
+      <Tabs.Screen name="profile" options={{ title: '我', tabBarIcon: ({ color }) => <Ionicons size={28} name="person" color={color} /> }} />
     </Tabs>
   );
 }

app/(tabs)/about.tsx

@@ -1,5 +0,0 @@
-import { Text } from "react-native";
-
-export default function AboutRoute() {
-  return <Text>About Route</Text>;
-}

app/(tabs)/contacts.tsx

@@ -0,0 +1,3 @@
+export default function ContactsRoute() {
+  return <></>;
+}

app/(tabs)/discover.tsx

@@ -0,0 +1,3 @@
+export default function ContactsRoute() {
+  return <></>;
+}

app/(tabs)/index.tsx

@@ -1,5 +1,5 @@
 import { Text } from "react-native";
 
 export default function IndexRoute() {
-  return <Text>Index Route</Text>;
+  return <Text>Chat Route</Text>;
 }

app/(tabs)/profile.tsx

@@ -0,0 +1,3 @@
+export default function ProfileRoute() {
+  return <></>;
+}

features/home/screens/home-screen.tsx

@@ -1,38 +0,0 @@
-import { Link } from "expo-router";
-import { StyleSheet, Text, View } from "react-native";
-
-export function HomeScreen() {
-  return (
-    <View style={styles.container}>
-      <Text style={styles.title}>lamp</Text>
-      <Text style={styles.subtitle}>OpenIM powered messaging workspace</Text>
-      <Link href="/modal" style={styles.link}>
-        Open modal preview
-      </Link>
-    </View>
-  );
-}
-
-const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-    justifyContent: "center",
-    alignItems: "center",
-    gap: 10,
-    padding: 24,
-  },
-  title: {
-    fontSize: 32,
-    fontWeight: "700",
-    letterSpacing: 0.5,
-  },
-  subtitle: {
-    fontSize: 15,
-    color: "#5c6169",
-  },
-  link: {
-    marginTop: 8,
-    fontSize: 16,
-    fontWeight: "600",
-  },
-});

features/system/screens/modal-screen.tsx

@@ -1,38 +0,0 @@
-import { Link } from "expo-router";
-import { StyleSheet, Text, View } from "react-native";
-
-export function ModalScreen() {
-  return (
-    <View style={styles.container}>
-      <Text style={styles.title}>Modal Route</Text>
-      <Text style={styles.subtitle}>This screen is presented with modal behavior on native.</Text>
-      <Link href="/" dismissTo style={styles.link}>
-        Back to home
-      </Link>
-    </View>
-  );
-}
-
-const styles = StyleSheet.create({
-  container: {
-    flex: 1,
-    alignItems: "center",
-    justifyContent: "center",
-    padding: 20,
-    gap: 8,
-  },
-  title: {
-    fontSize: 24,
-    fontWeight: "700",
-  },
-  subtitle: {
-    fontSize: 14,
-    color: "#5c6169",
-    textAlign: "center",
-  },
-  link: {
-    marginTop: 8,
-    fontSize: 16,
-    fontWeight: "600",
-  },
-});