feat: Terminal Tab — 远程exec命令执行界面

- Terminal标签: 命令输入+Run按钮+输出区域
- 等宽字体+绿字黑底终端风格
- 5个Tab: Chat/Term/Gateway/Device/Connection

packages/client-android/App.tsx

@@ -11,7 +11,7 @@ import { DEFAULT_GATEWAY_CONFIG } from '@yuzu-gca/shared';
 type Msg = { role: 'user' | 'assistant'; text: string; ts: number };
 
 export default function App() {
-  const [tab, setTab] = useState<'chat' | 'settings' | 'device' | 'connection'>('chat');
+  const [tab, setTab] = useState<'chat' | 'terminal' | 'settings' | 'device' | 'connection'>('chat');
 
   // Chat state
   const [messages, setMessages] = useState<Msg[]>([]);
@@ -85,10 +85,10 @@ export default function App() {
 
       {/* Tabs */}
       <View style={styles.tabBar}>
-        {(['chat', 'settings', 'device', 'connection'] as const).map(t => (
+        {(['chat', 'terminal', 'settings', 'device', 'connection'] as const).map(t => (
           <TouchableOpacity key={t} onPress={() => setTab(t)} style={[styles.tab, tab === t && styles.tabActive]}>
             <Text style={[styles.tabText, tab === t && styles.tabTextActive]}>
-              {t === 'chat' ? 'Chat' : t === 'settings' ? 'Gateway' : t === 'device' ? 'Device' : (connStatus === 'connected' ? '🟢' : '⚫')}
+              {t === 'chat' ? 'Chat' : t === 'terminal' ? 'Term' : t === 'settings' ? 'Gateway' : t === 'device' ? 'Device' : (connStatus === 'connected' ? '🟢' : '⚫')}
             </Text>
           </TouchableOpacity>
         ))}
@@ -128,6 +128,29 @@ export default function App() {
         </View>
       )}
 
+      {/* ── Terminal Tab ── */}
+      {tab === 'terminal' && (
+        <View style={styles.chatContainer}>
+          <View style={styles.termOutput}>
+            <ScrollView>
+              <Text style={styles.termText} selectable>Execute remote commands via Gateway MCP.{'\n'}Type a shell command and press Execute.{'\n'}</Text>
+            </ScrollView>
+          </View>
+          <View style={styles.inputBar}>
+            <TextInput
+              style={styles.chatInput}
+              placeholder="ls -la /home"
+              placeholderTextColor="#475569"
+              autoCapitalize="none"
+              autoCorrect={false}
+            />
+            <TouchableOpacity style={styles.sendBtn}>
+              <Text style={styles.sendBtnText}>Run</Text>
+            </TouchableOpacity>
+          </View>
+        </View>
+      )}
+
       {/* ── Settings Tab ── */}
       {tab === 'settings' && (
         <ScrollView style={styles.body}>
@@ -245,6 +268,8 @@ const styles = StyleSheet.create({
   conn_error: { backgroundColor: '#7f1d1d' },
   conn_disconnected: { backgroundColor: '#1e293b' },
   connText: { fontSize: 16, color: '#e2e8f0' },
+  termOutput: { flex: 1, backgroundColor: '#0a0f1a', margin: 8, borderRadius: 8, padding: 12 },
+  termText: { fontFamily: 'monospace', fontSize: 12, color: '#22c55e', lineHeight: 18 },
   btn: { borderRadius: 8, padding: 14, marginTop: 16, alignItems: 'center' },
   btnPrimary: { backgroundColor: '#1e40af' },
   btnDanger: { backgroundColor: '#991b1b' },