diff --git a/android/app/src/main/java/com/hyzq/boss/WechatSurfaceMapper.java b/android/app/src/main/java/com/hyzq/boss/WechatSurfaceMapper.java
new file mode 100644
index 0000000..0ac3adf
--- /dev/null
+++ b/android/app/src/main/java/com/hyzq/boss/WechatSurfaceMapper.java
@@ -0,0 +1,75 @@
+package com.hyzq.boss;
+
+import java.util.Arrays;
+import java.util.List;
+
+public final class WechatSurfaceMapper {
+    private static final List<String> ROOT_ME_MENU_TITLES = Arrays.asList(
+            "账号与安全",
+            "AI 账号",
+            "设置",
+            "技能",
+            "关于"
+    );
+
+    private static final List<String> PROJECT_QUICK_ACTIONS = Arrays.asList(
+            "项目目标",
+            "版本记录"
+    );
+
+    private WechatSurfaceMapper() {
+    }
+
+    public static ConversationRow toConversationRow(
+            String title,
+            String preview,
+            String timeLabel,
+            int unreadCount
+    ) {
+        return new ConversationRow(title, preview, timeLabel, unreadCount);
+    }
+
+    public static DeviceRow toDeviceRow(String title, boolean online, String account) {
+        return new DeviceRow(title, buildSubtitle(online, account));
+    }
+
+    public static String[] rootMeMenuTitles() {
+        return ROOT_ME_MENU_TITLES.toArray(new String[0]);
+    }
+
+    public static String[] projectQuickActions() {
+        return PROJECT_QUICK_ACTIONS.toArray(new String[0]);
+    }
+
+    private static String buildSubtitle(boolean online, String account) {
+        String status = online ? "在线" : "离线";
+        if (account == null || account.isEmpty()) {
+            return status;
+        }
+        return status + " · 账号 " + account;
+    }
+
+    public static final class ConversationRow {
+        public final String title;
+        public final String preview;
+        public final String timeLabel;
+        public final int unreadCount;
+
+        public ConversationRow(String title, String preview, String timeLabel, int unreadCount) {
+            this.title = title;
+            this.preview = preview;
+            this.timeLabel = timeLabel;
+            this.unreadCount = unreadCount;
+        }
+    }
+
+    public static final class DeviceRow {
+        public final String title;
+        public final String subtitle;
+
+        public DeviceRow(String title, String subtitle) {
+            this.title = title;
+            this.subtitle = subtitle;
+        }
+    }
+}
diff --git a/android/app/src/test/java/com/hyzq/boss/WechatSurfaceMapperTest.java b/android/app/src/test/java/com/hyzq/boss/WechatSurfaceMapperTest.java
new file mode 100644
index 0000000..0050699
--- /dev/null
+++ b/android/app/src/test/java/com/hyzq/boss/WechatSurfaceMapperTest.java
@@ -0,0 +1,105 @@
+package com.hyzq.boss;
+
+import org.junit.Test;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+
+public class WechatSurfaceMapperTest {
+    @Test
+    public void toConversationRow_keepsOnlyWechatFields() throws Exception {
+        Object row = invokeStatic(
+                "toConversationRow",
+                new Class<?>[]{String.class, String.class, String.class, int.class},
+                "项目 A",
+                "最近消息预览",
+                "10:24",
+                3
+        );
+
+        assertEquals("项目 A", readField(row, "title"));
+        assertEquals("最近消息预览", readField(row, "preview"));
+        assertEquals("10:24", readField(row, "timeLabel"));
+        assertEquals(3, readField(row, "unreadCount"));
+        assertEquals(
+                Arrays.asList("title", "preview", "timeLabel", "unreadCount"),
+                Arrays.asList(readDeclaredFieldNames(row.getClass()))
+        );
+    }
+
+    @Test
+    public void toDeviceRow_keepsOnlySimpleSubtitle() throws Exception {
+        Object row = invokeStatic(
+                "toDeviceRow",
+                new Class<?>[]{String.class, boolean.class, String.class},
+                "Mac Studio",
+                true,
+                "17600003315"
+        );
+
+        assertEquals("Mac Studio", readField(row, "title"));
+        assertEquals("在线 · 账号 17600003315", readField(row, "subtitle"));
+        assertEquals(
+                Arrays.asList("title", "subtitle"),
+                Arrays.asList(readDeclaredFieldNames(row.getClass()))
+        );
+    }
+
+    @Test
+    public void rootMeMenuTitles_matchApprovedSimpleMenu() throws Exception {
+        Object titles = invokeStatic("rootMeMenuTitles", new Class<?>[0]);
+        assertArrayEquals(
+                new String[]{"账号与安全", "AI 账号", "设置", "技能", "关于"},
+                toStringArray(titles)
+        );
+    }
+
+    @Test
+    public void projectQuickActions_keepOnlyGoalsAndVersions() throws Exception {
+        Object titles = invokeStatic("projectQuickActions", new Class<?>[0]);
+        assertArrayEquals(
+                new String[]{"项目目标", "版本记录"},
+                toStringArray(titles)
+        );
+    }
+
+    private static Object invokeStatic(String methodName, Class<?>[] parameterTypes, Object... args) throws Exception {
+        Class<?> mapperClass = Class.forName("com.hyzq.boss.WechatSurfaceMapper");
+        Method method = mapperClass.getDeclaredMethod(methodName, parameterTypes);
+        return method.invoke(null, args);
+    }
+
+    private static Object readField(Object target, String fieldName) throws Exception {
+        Field field = target.getClass().getField(fieldName);
+        return field.get(target);
+    }
+
+    private static String[] readDeclaredFieldNames(Class<?> type) {
+        Field[] fields = type.getDeclaredFields();
+        String[] names = new String[fields.length];
+        for (int i = 0; i < fields.length; i++) {
+            names[i] = fields[i].getName();
+        }
+        return names;
+    }
+
+    private static String[] toStringArray(Object value) {
+        if (value instanceof String[]) {
+            return (String[]) value;
+        }
+        if (value instanceof List) {
+            List<?> list = (List<?>) value;
+            String[] result = new String[list.size()];
+            for (int i = 0; i < list.size(); i++) {
+                result[i] = String.valueOf(list.get(i));
+            }
+            return result;
+        }
+        throw new IllegalStateException("Unexpected return type: " + value.getClass());
+    }
+}