feat(flow): input feather, center puppet, smiley nav, arc buttons

- Input bar: show bouncing feather icon while typing (circle static); send
  after pause or on submit; debounced isTyping state
- Move puppet to center empty state (replacing feather); hide when there
  are messages
- Add smiley button next to mic; same as Talk (web: location, native: modal)
- Puppet actions: place four buttons in arc above puppet with icons; increase
  spacing between buttons and puppet

package-lock.json

@@ -22,12 +22,14 @@
         "buffer": "^6.0.3",
         "expo": "~52.0.0",
         "expo-asset": "~11.0.5",
+        "expo-av": "~15.0.2",
         "expo-constants": "~17.0.8",
         "expo-crypto": "~14.0.2",
         "expo-font": "~13.0.4",
         "expo-haptics": "~14.0.0",
         "expo-image-picker": "^17.0.10",
         "expo-linear-gradient": "~14.0.2",
+        "expo-speech": "~13.0.1",
         "expo-status-bar": "~2.0.0",
         "react": "18.3.1",
         "react-dom": "18.3.1",
@@ -39,6 +41,7 @@
         "react-native-svg": "^15.15.2",
         "react-native-view-shot": "^3.8.0",
         "react-native-web": "~0.19.13",
+        "react-native-webview": "13.12.2",
         "readable-stream": "^4.7.0",
         "vm-browserify": "^1.1.2"
       },
@@ -6134,6 +6137,23 @@
         "react-native": "*"
       }
     },
+    "node_modules/expo-av": {
+      "version": "15.0.2",
+      "resolved": "https://registry.npmjs.org/expo-av/-/expo-av-15.0.2.tgz",
+      "integrity": "sha512-AHIHXdqLgK1dfHZF0JzX3YSVySGMrWn9QtPzaVjw54FAzvXfMt4sIoq4qRL/9XWCP9+ICcCs/u3EcvmxQjrfcA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "expo": "*",
+        "react": "*",
+        "react-native": "*",
+        "react-native-web": "*"
+      },
+      "peerDependenciesMeta": {
+        "react-native-web": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/expo-constants": {
       "version": "17.0.8",
       "resolved": "https://registry.npmjs.org/expo-constants/-/expo-constants-17.0.8.tgz",
@@ -6278,6 +6298,15 @@
         "invariant": "^2.2.4"
       }
     },
+    "node_modules/expo-speech": {
+      "version": "13.0.1",
+      "resolved": "https://registry.npmjs.org/expo-speech/-/expo-speech-13.0.1.tgz",
+      "integrity": "sha512-J7tvFzORsFpIKihMnayeY5lCPc15giDrlN+ws2uUNo0MvLv1HCYEu/5p3+aMmZXXsY5I1QlconD4CwRWw3JFig==",
+      "license": "MIT",
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/expo-status-bar": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/expo-status-bar/-/expo-status-bar-2.0.1.tgz",
@@ -10034,6 +10063,20 @@
       "integrity": "sha512-rkpe71W0N0c0Xz6QD0eJETuWAJGnJ9afsl1srmwPrI+yBCkge5EycXXbYRyvL29zZVUWQCY7InPRCv3GDXuZNw==",
       "license": "MIT"
     },
+    "node_modules/react-native-webview": {
+      "version": "13.12.2",
+      "resolved": "https://registry.npmjs.org/react-native-webview/-/react-native-webview-13.12.2.tgz",
+      "integrity": "sha512-OpRcEhf1IEushREax6rrKTeqGrHZ9OmryhZLBLQQU4PwjqVsq55iC8OdYSD61/F628f9rURn9THyxEZjrknpQQ==",
+      "license": "MIT",
+      "dependencies": {
+        "escape-string-regexp": "^4.0.0",
+        "invariant": "2.2.4"
+      },
+      "peerDependencies": {
+        "react": "*",
+        "react-native": "*"
+      }
+    },
     "node_modules/react-native/node_modules/babel-plugin-syntax-hermes-parser": {
       "version": "0.23.1",
       "resolved": "https://registry.npmjs.org/babel-plugin-syntax-hermes-parser/-/babel-plugin-syntax-hermes-parser-0.23.1.tgz",

package.json

@@ -27,8 +27,10 @@
     "expo-crypto": "~14.0.2",
     "expo-font": "~13.0.4",
     "expo-haptics": "~14.0.0",
+    "expo-av": "~15.0.2",
     "expo-image-picker": "^17.0.10",
     "expo-linear-gradient": "~14.0.2",
+    "expo-speech": "~13.0.1",
     "expo-status-bar": "~2.0.0",
     "react": "18.3.1",
     "react-dom": "18.3.1",
@@ -39,6 +41,7 @@
     "react-native-screens": "~4.4.0",
     "react-native-svg": "^15.15.2",
     "react-native-view-shot": "^3.8.0",
+    "react-native-webview": "13.12.2",
     "react-native-web": "~0.19.13",
     "readable-stream": "^4.7.0",
     "vm-browserify": "^1.1.2"

src/components/puppet/FlowPuppetSlot.tsx

@@ -1,16 +1,35 @@
 /**
  * FlowPuppetSlot - Slot for FlowScreen to show interactive AI puppet.
  * Composes PuppetView and optional action buttons; does not depend on FlowScreen logic.
+ * Talk button: on web opens AI Studio in current tab (site blocks iframe); on native opens in-app WebView.
  */
 
 import React, { useState, useCallback } from 'react';
-import { View, Text, StyleSheet, TouchableOpacity } from 'react-native';
+import { View, Text, StyleSheet, TouchableOpacity, Modal, Platform } from 'react-native';
+import { SafeAreaView } from 'react-native-safe-area-context';
 import { PuppetView } from './PuppetView';
 import type { FlowPuppetSlotProps, PuppetAction } from './types';
 import { colors } from '../../theme/colors';
-import { borderRadius, spacing } from '../../theme/colors';
+import { borderRadius, spacing, shadows } from '../../theme/colors';
+import { Ionicons } from '@expo/vector-icons';
 
-const ACTIONS: PuppetAction[] = ['smile', 'jump', 'shake'];
+const isWeb = Platform.OS === 'web';
+
+// Only load WebView on native (it does not support web platform)
+const WebView = isWeb
+  ? null
+  : require('react-native-webview').WebView;
+
+const PUPPET_ACTIONS: PuppetAction[] = ['smile', 'jump', 'shake'];
+
+const TALK_WEB_URL = 'https://aistudio.google.com/apps/drive/1L39svCbfbRc48Eby64Q0rSbSoQZiWQBp?showPreview=true&showAssistant=true&fullscreenApplet=true';
+
+const ACTION_CONFIG: Record<string, { label: string; icon: keyof typeof Ionicons.glyphMap }> = {
+  smile: { label: 'Smile', icon: 'happy-outline' },
+  jump: { label: 'Jump', icon: 'arrow-up-circle-outline' },
+  shake: { label: 'Shake', icon: 'swap-horizontal' },
+  talk: { label: 'Talk', icon: 'chatbubble-ellipses-outline' },
+};
 
 export function FlowPuppetSlot({
   currentAction,
@@ -19,6 +38,7 @@ export function FlowPuppetSlot({
   showActionButtons = true,
 }: FlowPuppetSlotProps) {
   const [localAction, setLocalAction] = useState<PuppetAction>(currentAction);
+  const [showTalkWeb, setShowTalkWeb] = useState(false);
 
   const effectiveAction = currentAction !== 'idle' ? currentAction : localAction;
 
@@ -38,21 +58,72 @@ export function FlowPuppetSlot({
 
   return (
     <View style={styles.wrapper}>
-      <PuppetView action={effectiveAction} isTalking={isTalking} />
+      {/* Buttons in an arc above puppet, arc follows puppet shape; extra spacing to puppet */}
       {showActionButtons && (
-        <View style={styles.actions}>
+        <View style={styles.actionsRow}>
-          {ACTIONS.map((act) => (
+          {PUPPET_ACTIONS.map((act, index) => {
+            const config = ACTION_CONFIG[act];
+            const isCenter = index === 1 || index === 2;
+            return (
+              <View key={act} style={[styles.arcSlot, isCenter && styles.arcSlotCenter]}>
                 <TouchableOpacity
-              key={act}
                   style={styles.actionBtn}
                   onPress={() => handleAction(act)}
                   activeOpacity={0.8}
                 >
-              <Text style={styles.actionLabel}>{act}</Text>
+                  <Ionicons name={config.icon} size={22} color={colors.nautical.teal} />
+                  <Text style={styles.actionLabel}>{config.label}</Text>
                 </TouchableOpacity>
-          ))}
+              </View>
+            );
+          })}
+          <View style={styles.arcSlot}>
+            <TouchableOpacity
+              style={[styles.actionBtn, styles.talkBtn]}
+              onPress={() => {
+                if (isWeb && typeof (globalThis as any).window !== 'undefined') {
+                  (globalThis as any).window.location.href = TALK_WEB_URL;
+                } else {
+                  setShowTalkWeb(true);
+                }
+              }}
+              activeOpacity={0.8}
+            >
+              <Ionicons name={ACTION_CONFIG.talk.icon} size={22} color={colors.nautical.teal} />
+              <Text style={[styles.actionLabel, styles.talkLabel]}>Talk</Text>
+            </TouchableOpacity>
+          </View>
         </View>
       )}
+      <PuppetView action={effectiveAction} isTalking={isTalking} />
+
+      <Modal
+        visible={showTalkWeb}
+        animationType="slide"
+        onRequestClose={() => setShowTalkWeb(false)}
+      >
+        <SafeAreaView style={styles.webModal} edges={['top']}>
+          <View style={styles.webModalHeader}>
+            <TouchableOpacity
+              style={styles.webModalClose}
+              onPress={() => setShowTalkWeb(false)}
+              hitSlop={{ top: 12, bottom: 12, left: 12, right: 12 }}
+            >
+              <Ionicons name="close" size={28} color={colors.flow.text} />
+            </TouchableOpacity>
+            <Text style={styles.webModalTitle} numberOfLines={1}>AI Studio Talk</Text>
+          </View>
+          {WebView ? (
+            <WebView
+              source={{ uri: TALK_WEB_URL }}
+              style={styles.webView}
+              onError={(e) => console.warn('WebView error:', e.nativeEvent)}
+            />
+          ) : (
+            <View style={styles.webView} />
+          )}
+        </SafeAreaView>
+      </Modal>
     </View>
   );
 }
@@ -63,23 +134,71 @@ const styles = StyleSheet.create({
     justifyContent: 'center',
     paddingVertical: spacing.lg,
   },
-  actions: {
+  actionsRow: {
     flexDirection: 'row',
-    marginTop: spacing.lg,
+    flexWrap: 'wrap',
+    justifyContent: 'center',
+    alignItems: 'flex-end',
+    marginBottom: spacing.xxl,
     gap: spacing.sm,
   },
+  arcSlot: {
+    alignItems: 'center',
+    marginBottom: 0,
+  },
+  arcSlotCenter: {
+    marginBottom: 14,
+  },
   actionBtn: {
-    paddingHorizontal: spacing.md,
+    flexDirection: 'column',
+    alignItems: 'center',
+    justifyContent: 'center',
+    minWidth: 56,
     paddingVertical: spacing.sm,
-    borderRadius: borderRadius.lg,
+    paddingHorizontal: spacing.sm,
+    borderRadius: borderRadius.xl,
     backgroundColor: colors.flow.cardBackground,
     borderWidth: 1,
     borderColor: colors.flow.cardBorder,
+    ...shadows.soft,
   },
   actionLabel: {
-    fontSize: 12,
+    fontSize: 11,
     fontWeight: '600',
     color: colors.flow.primary,
+    marginTop: 4,
     textTransform: 'capitalize',
   },
+  talkLabel: {
+    color: colors.nautical.teal,
+  },
+  talkBtn: {
+    borderColor: colors.nautical.teal,
+    backgroundColor: colors.nautical.paleAqua,
+  },
+  webModal: {
+    flex: 1,
+    backgroundColor: colors.flow.cardBackground,
+  },
+  webModalHeader: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    paddingHorizontal: spacing.sm,
+    paddingVertical: spacing.sm,
+    borderBottomWidth: 1,
+    borderBottomColor: colors.flow.cardBorder,
+  },
+  webModalClose: {
+    padding: spacing.xs,
+    marginRight: spacing.sm,
+  },
+  webModalTitle: {
+    fontSize: 18,
+    fontWeight: '600',
+    color: colors.flow.text,
+    flex: 1,
+  },
+  webView: {
+    flex: 1,
+  },
 });

src/components/puppet/PuppetView.tsx

@@ -51,7 +51,7 @@ export function PuppetView({ action, isTalking }: PuppetViewProps) {
     const loop = Animated.loop(
       Animated.sequence([
         Animated.timing(smileScale, {
-          toValue: 1.12,
+          toValue: 1.18,
           duration: 400,
           useNativeDriver: true,
           easing: Easing.out(Easing.ease),
@@ -314,26 +314,26 @@ const styles = StyleSheet.create({
     backgroundColor: '#0c4a6e',
   },
   mouthSmile: {
-    width: 22,
+    width: 28,
-    height: 6,
+    height: 10,
-    borderBottomLeftRadius: 11,
+    borderBottomLeftRadius: 14,
-    borderBottomRightRadius: 11,
+    borderBottomRightRadius: 14,
     borderTopLeftRadius: 0,
     borderTopRightRadius: 0,
   },
   mouthOpen: {
     width: 18,
-    height: 6,
+    height: 8,
     top: BODY_SIZE * 0.51,
     borderRadius: 3,
     backgroundColor: 'rgba(12, 74, 110, 0.9)',
   },
   mouthBigSmile: {
-    width: 32,
+    width: 42,
-    height: 10,
+    height: 24,
-    top: BODY_SIZE * 0.51,
+    top: BODY_SIZE * 0.50,
-    borderBottomLeftRadius: 16,
+    borderBottomLeftRadius: 21,
-    borderBottomRightRadius: 16,
+    borderBottomRightRadius: 21,
     borderTopLeftRadius: 0,
     borderTopRightRadius: 0,
   },

src/config/index.ts

@@ -58,6 +58,7 @@ export const API_ENDPOINTS = {
   AI: {
     PROXY: '/ai/proxy',
     GET_ROLES: '/get_ai_roles',
+    SPEECH_TO_TEXT: '/ai/speech-to-text',
   },
 
   // Admin Operations

src/screens/FlowScreen.tsx

@@ -24,11 +24,15 @@ import {
   FlatList,
   Animated,
   Image,
+  Platform,
 } from 'react-native';
 import { LinearGradient } from 'expo-linear-gradient';
 import { Ionicons, Feather, FontAwesome5 } from '@expo/vector-icons';
 import * as ImagePicker from 'expo-image-picker';
+import { Audio } from 'expo-av';
+import * as Speech from 'expo-speech';
 import { AIRole } from '../types';
+import { speechToText } from '../services/voice.service';
 import { colors, typography, spacing, borderRadius, shadows } from '../theme/colors';
 import { aiService, AIMessage } from '../services/ai.service';
 import { langGraphService } from '../services/langgraph.service';
@@ -43,6 +47,10 @@ import { Buffer } from 'buffer';
 import { FlowPuppetSlot } from '../components/puppet';
 import type { PuppetAction } from '../components/puppet';
 
+const isWeb = Platform.OS === 'web';
+const WebView = isWeb ? null : require('react-native-webview').WebView;
+const TALK_WEB_URL = 'https://aistudio.google.com/apps/drive/1L39svCbfbRc48Eby64Q0rSbSoQZiWQBp?showPreview=true&showAssistant=true&fullscreenApplet=true';
+
 // =============================================================================
 // Type Definitions
 // =============================================================================
@@ -86,6 +94,7 @@ export default function FlowScreen() {
 
   // History modal state
   const [showHistoryModal, setShowHistoryModal] = useState(false);
+  const [showTalkModal, setShowTalkModal] = useState(false);
   const modalSlideAnim = useRef(new Animated.Value(0)).current;
 
   // Summary state
@@ -102,6 +111,45 @@ export default function FlowScreen() {
 
   // AI multimodal puppet (optional; does not affect existing chat logic)
   const [puppetAction, setPuppetAction] = useState<PuppetAction>('idle');
+  /** True while TTS is playing (puppet mouth open) */
+  const [isPuppetTalking, setIsPuppetTalking] = useState(false);
+  const recordingRef = useRef<Audio.Recording | null>(null);
+
+  /** True while user is actively typing; false after pause or send. Used to show feather vs send button. */
+  const [isTyping, setIsTyping] = useState(false);
+  const typingDebounceRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+  const featherBounceAnim = useRef(new Animated.Value(0)).current;
+
+  const typingActiveRef = useRef(false);
+  // Feather bounce loop when user is typing (like writing with a quill)
+  useEffect(() => {
+    if (!isTyping) {
+      typingActiveRef.current = false;
+      featherBounceAnim.setValue(0);
+      return;
+    }
+    typingActiveRef.current = true;
+    const bounce = () => {
+      if (!typingActiveRef.current) return;
+      featherBounceAnim.setValue(0);
+      Animated.sequence([
+        Animated.timing(featherBounceAnim, { toValue: 1, duration: 220, useNativeDriver: true }),
+        Animated.timing(featherBounceAnim, { toValue: 0, duration: 220, useNativeDriver: true }),
+      ]).start(({ finished }) => { if (finished && typingActiveRef.current) bounce(); });
+    };
+    bounce();
+    return () => {
+      typingActiveRef.current = false;
+      featherBounceAnim.stopAnimation();
+    };
+  }, [isTyping]);
+
+  const handleInputChange = (text: string) => {
+    setNewContent(text);
+    setIsTyping(true);
+    if (typingDebounceRef.current) clearTimeout(typingDebounceRef.current);
+    typingDebounceRef.current = setTimeout(() => setIsTyping(false), 1200);
+  };
 
   const [chatHistory, setChatHistory] = useState<ChatSession[]>([
     // Sample history data
@@ -271,6 +319,7 @@ export default function FlowScreen() {
     const hasText = !!newContent.trim();
     const hasImage = !!attachedImage;
     if ((!hasText && !hasImage) || isSending || !selectedRole) return;
+    setIsTyping(false);
 
     // Check authentication
     if (!token) {
@@ -396,11 +445,106 @@ export default function FlowScreen() {
   };
 
   /**
-   * Handle voice recording toggle
+   * Handle voice recording: start/stop, then STT -> chat -> TTS (puppet speaks).
+   * Does not affect existing text/image send logic.
    */
-  const handleVoiceRecord = () => {
+  const handleVoiceRecord = async () => {
-    setIsRecording(!isRecording);
+    if (isRecording) {
-    // TODO: Implement voice recording functionality
+      // Stop recording and run voice pipeline
+      const recording = recordingRef.current;
+      if (!recording) {
+        setIsRecording(false);
+        return;
+      }
+      try {
+        await recording.stopAndUnloadAsync();
+        const uri = recording.getURI();
+        recordingRef.current = null;
+        setIsRecording(false);
+        if (!uri || !token || !selectedRole) return;
+
+        setIsSending(true);
+        setPuppetAction('think');
+        const transcribed = await speechToText(uri, token);
+        if (!transcribed.trim()) {
+          setIsSending(false);
+          setPuppetAction('idle');
+          Alert.alert('Voice', 'No speech detected. Try again.');
+          return;
+        }
+
+        const userMsg: ChatMessage = {
+          id: Date.now().toString(),
+          role: 'user',
+          content: transcribed,
+          createdAt: new Date(),
+        };
+        setMessages(prev => [...prev, userMsg]);
+
+        const history: (HumanMessage | LangChainAIMessage | SystemMessage)[] = messages.map(msg => {
+          if (msg.role === 'user') return new HumanMessage(msg.content);
+          return new LangChainAIMessage(msg.content);
+        });
+        const systemPrompt = new SystemMessage(selectedRole?.systemPrompt || '');
+        const currentMsg = new HumanMessage(transcribed);
+        const fullMessages = [systemPrompt, ...history, currentMsg];
+        const aiResponse = await langGraphService.execute(fullMessages, token);
+
+        const aiMsg: ChatMessage = {
+          id: (Date.now() + 1).toString(),
+          role: 'assistant',
+          content: aiResponse,
+          createdAt: new Date(),
+        };
+        setMessages(prev => [...prev, aiMsg]);
+        setIsSending(false);
+        setPuppetAction('idle');
+
+        setIsPuppetTalking(true);
+        Speech.speak(aiResponse, {
+          onDone: () => setIsPuppetTalking(false),
+          onStopped: () => setIsPuppetTalking(false),
+          onError: () => setIsPuppetTalking(false),
+        });
+      } catch (e) {
+        console.error('Voice pipeline failed:', e);
+        setIsRecording(false);
+        setIsSending(false);
+        setPuppetAction('idle');
+        recordingRef.current = null;
+        const msg = e instanceof Error ? e.message : String(e);
+        if (msg.includes('503') || msg.includes('not configured')) {
+          Alert.alert('Voice', 'Speech-to-text is not configured (need active Gemini AI config). Use text input.');
+        } else {
+          Alert.alert('Voice', msg || 'Voice failed. Try again.');
+        }
+      }
+      return;
+    }
+
+    // Start recording
+    try {
+      const { status } = await Audio.requestPermissionsAsync();
+      if (status !== 'granted') {
+        Alert.alert('Permission', 'Microphone access is needed for voice.');
+        return;
+      }
+      await Audio.setAudioModeAsync({
+        allowsRecordingIOS: true,
+        playsInSilentModeIOS: true,
+        staysActiveInBackground: false,
+        shouldDuckAndroid: true,
+        playThroughEarpieceAndroid: false,
+      });
+      const { recording } = await Audio.Recording.createAsync(
+        Audio.RecordingOptionsPresets.HIGH_QUALITY
+      );
+      recordingRef.current = recording;
+      setIsRecording(true);
+    } catch (e) {
+      console.error('Start recording failed:', e);
+      Alert.alert('Voice', 'Could not start recording.');
+    }
   };
 
   /**
@@ -663,13 +807,16 @@ export default function FlowScreen() {
   };
 
   /**
-   * Render empty state when no messages
+   * Render empty state when no messages: center puppet (same position as before feather), hide after send
    */
   const renderEmptyState = () => (
     <View style={styles.emptyState}>
-      <View style={styles.emptyIcon}>
+      <FlowPuppetSlot
-        <Feather name="feather" size={48} color={colors.nautical.seafoam} />
+        currentAction={puppetAction}
-      </View>
+        isTalking={isSending || isPuppetTalking}
+        onAction={setPuppetAction}
+        showActionButtons={true}
+      />
       <Text style={styles.emptyTitle}>Chatting with {selectedRole?.name || 'AI'}</Text>
       <Text style={styles.emptySubtitle}>
         {selectedRole?.description || 'Loading AI Assistant...'}
@@ -765,14 +912,6 @@ export default function FlowScreen() {
             </TouchableOpacity>
           </View>
 
-          {/* AI multimodal puppet (optional slot; code in components/puppet) */}
-          <FlowPuppetSlot
-            currentAction={puppetAction}
-            isTalking={isSending}
-            onAction={setPuppetAction}
-            showActionButtons={true}
-          />
-
           {/* Chat Messages */}
           <ScrollView
             ref={scrollViewRef}
@@ -837,32 +976,80 @@ export default function FlowScreen() {
                   placeholder={attachedImage ? '输入对图片的说明（可选）...' : 'Message...'}
                   placeholderTextColor={colors.flow.textSecondary}
                   value={newContent}
-                  onChangeText={setNewContent}
+                  onChangeText={handleInputChange}
                   multiline
                   maxLength={500}
                 />
               </View>
 
-              {/* Send or Voice button: show send when has text or attached image */}
+              {/* Send / typing feather / Voice: feather while typing, send when paused or done, mic when empty */}
-              {newContent.trim() || attachedImage || isSending ? (
+              {(newContent.trim() || attachedImage) || isSending ? (
+                isSending ? (
                   <TouchableOpacity
-                  style={[styles.sendButton, isSending && styles.sendButtonDisabled]}
+                    style={[styles.sendButton, styles.sendButtonDisabled]}
-                  onPress={handleSendMessage}
+                    disabled
-                  activeOpacity={0.8}
-                  disabled={isSending}
                   >
                     <LinearGradient
                       colors={[colors.nautical.teal, colors.nautical.seafoam]}
                       style={styles.sendButtonGradient}
                     >
-                    {isSending ? (
                       <ActivityIndicator size="small" color="#fff" />
-                    ) : (
-                      <Ionicons name="arrow-up" size={20} color="#fff" />
-                    )}
                     </LinearGradient>
                   </TouchableOpacity>
+                ) : (newContent.trim() || attachedImage) && isTyping ? (
+                  <View style={styles.sendButton}>
+                    <View
+                      style={[
+                        styles.sendButtonGradient,
+                        { backgroundColor: colors.nautical.teal },
+                      ]}
+                    />
+                    <Animated.View
+                      style={[
+                        StyleSheet.absoluteFill,
+                        styles.sendButtonGradient,
+                        {
+                          transform: [{
+                            translateY: featherBounceAnim.interpolate({
+                              inputRange: [0, 1],
+                              outputRange: [0, -5],
+                            }),
+                          }],
+                        },
+                      ]}
+                    >
+                      <Feather name="feather" size={20} color="#fff" />
+                    </Animated.View>
+                  </View>
                 ) : (
+                  <TouchableOpacity
+                    style={styles.sendButton}
+                    onPress={handleSendMessage}
+                    activeOpacity={0.8}
+                  >
+                    <LinearGradient
+                      colors={[colors.nautical.teal, colors.nautical.seafoam]}
+                      style={styles.sendButtonGradient}
+                    >
+                      <Ionicons name="arrow-up" size={20} color="#fff" />
+                    </LinearGradient>
+                  </TouchableOpacity>
+                )
+              ) : (
+                <>
+                  <TouchableOpacity
+                    style={styles.inputBarButton}
+                    onPress={() => {
+                      if (isWeb && typeof (globalThis as any).window !== 'undefined') {
+                        (globalThis as any).window.location.href = TALK_WEB_URL;
+                      } else {
+                        setShowTalkModal(true);
+                      }
+                    }}
+                    activeOpacity={0.7}
+                  >
+                    <Feather name="smile" size={22} color={colors.flow.textSecondary} />
+                  </TouchableOpacity>
                   <TouchableOpacity
                     style={[styles.inputBarButton, isRecording && styles.recordingButton]}
                     onPress={handleVoiceRecord}
@@ -874,12 +1061,42 @@ export default function FlowScreen() {
                       color={isRecording ? '#fff' : colors.flow.textSecondary}
                     />
                   </TouchableOpacity>
+                </>
               )}
             </View>
           </View>
         </SafeAreaView>
       </LinearGradient>
 
+      {/* Talk / AI Studio modal (from smiley button on native) */}
+      <Modal
+        visible={showTalkModal}
+        animationType="slide"
+        onRequestClose={() => setShowTalkModal(false)}
+      >
+        <SafeAreaView style={styles.talkModal}>
+          <View style={styles.talkModalHeader}>
+            <TouchableOpacity
+              style={styles.talkModalClose}
+              onPress={() => setShowTalkModal(false)}
+              hitSlop={{ top: 12, bottom: 12, left: 12, right: 12 }}
+            >
+              <Ionicons name="close" size={28} color={colors.flow.text} />
+            </TouchableOpacity>
+            <Text style={styles.talkModalTitle} numberOfLines={1}>AI Studio Talk</Text>
+          </View>
+          {WebView ? (
+            <WebView
+              source={{ uri: TALK_WEB_URL }}
+              style={styles.talkWebView}
+              onError={(e: any) => console.warn('WebView error:', e.nativeEvent)}
+            />
+          ) : (
+            <View style={styles.talkWebView} />
+          )}
+        </SafeAreaView>
+      </Modal>
+
       <Modal
         visible={showHistoryModal}
         animationType="none"
@@ -1594,6 +1811,31 @@ const styles = StyleSheet.create({
   },
 
   // Modal styles
+  talkModal: {
+    flex: 1,
+    backgroundColor: colors.flow.cardBackground,
+  },
+  talkModalHeader: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    paddingHorizontal: spacing.sm,
+    paddingVertical: spacing.sm,
+    borderBottomWidth: 1,
+    borderBottomColor: colors.flow.cardBorder,
+  },
+  talkModalClose: {
+    padding: spacing.xs,
+    marginRight: spacing.sm,
+  },
+  talkModalTitle: {
+    fontSize: 18,
+    fontWeight: '600',
+    color: colors.flow.text,
+    flex: 1,
+  },
+  talkWebView: {
+    flex: 1,
+  },
   modalOverlay: {
     flex: 1,
     backgroundColor: 'rgba(26, 58, 74, 0.4)',

src/services/index.ts

@@ -29,3 +29,4 @@ export {
   type CreateVaultPayloadResult,
   type CreateAssetPayloadResult,
 } from './vault.service';
+export { speechToText, type SpeechToTextResult } from './voice.service';

src/services/voice.service.ts

@@ -0,0 +1,66 @@
+/**
+ * Voice Service
+ * Speech-to-text for puppet voice interaction (record -> STT -> chat -> TTS).
+ */
+
+import { NO_BACKEND_MODE, API_ENDPOINTS, buildApiUrl, logApiDebug } from '../config';
+
+export interface SpeechToTextResult {
+  text: string;
+}
+
+/**
+ * Send recorded audio to backend for transcription (OpenAI Whisper).
+ * @param audioUri - Local file URI from expo-av recording (e.g. file:///.../recording.m4a)
+ * @param token - JWT for auth
+ * @returns Transcribed text, or empty string on failure/not configured
+ */
+export async function speechToText(audioUri: string, token?: string): Promise<string> {
+  if (NO_BACKEND_MODE) {
+    logApiDebug('Voice', 'Using mock STT');
+    return 'Mock voice input (backend not connected)';
+  }
+
+  const url = buildApiUrl(API_ENDPOINTS.AI.SPEECH_TO_TEXT);
+  const headers: Record<string, string> = {};
+  if (token) headers['Authorization'] = `Bearer ${token}`;
+  // Do not set Content-Type; FormData sets multipart boundary
+
+  const formData = new FormData();
+  (formData as any).append('file', {
+    uri: audioUri,
+    name: 'voice.m4a',
+    type: 'audio/m4a',
+  });
+
+  try {
+    const response = await fetch(url, {
+      method: 'POST',
+      headers,
+      body: formData,
+    });
+    logApiDebug('Voice STT Status', response.status);
+
+    if (response.status === 503) {
+      const d = await response.json().catch(() => ({}));
+      throw new Error(d.detail || 'Speech-to-text not configured');
+    }
+    if (!response.ok) {
+      const errText = await response.text();
+      let detail = errText;
+      try {
+        const data = JSON.parse(errText);
+        detail = data.detail || errText;
+      } catch {}
+      throw new Error(detail);
+    }
+
+    const data = await response.json();
+    const text = (data.text ?? '').trim();
+    logApiDebug('Voice STT', { length: text.length });
+    return text;
+  } catch (e) {
+    logApiDebug('Voice STT Error', e);
+    throw e;
+  }
+}