优化工作流，添加app-icon

app-expo/src/app/(main)/conversation/[id].tsx

@@ -501,7 +501,6 @@ function ChatInputBar({
           styles.iconButton,
           pressed && styles.iconButtonPressed,
         ]}
-        disabled={disabled && !isRecording}
         accessibilityLabel={
           inputMode === 'text' ? switchToVoiceLabel : switchToTextLabel
         }
@@ -510,11 +509,7 @@ function ChatInputBar({
         <Icon
           as={inputMode === 'text' ? Mic : Type}
           size={22}
-          color={
-            disabled && !isRecording
-              ? 'rgba(141, 140, 144, 0.56)'
-              : CHAT_COLORS.onSurfaceVariant
-          }
+          color={CHAT_COLORS.onSurfaceVariant}
         />
       </Pressable>
       {/* 中间：文字输入 或 语音录制按钮 */}
@@ -531,7 +526,7 @@ function ChatInputBar({
             scrollEnabled
             textAlignVertical="top"
             maxLength={2000}
-            editable={!disabled}
+            editable
             onContentSizeChange={onInputContentSizeChange}
             onSubmitEditing={onSend}
             returnKeyType="send"
@@ -715,6 +710,15 @@ export default function ConversationScreen() {
   const handleSend = () => {
     const text = input.trim();
     if (!text) return;
+    if (connectionState !== 'connected') {
+      Alert.alert(
+        t('chatUnavailableTitle'),
+        connectionState === 'connecting'
+          ? t('chatUnavailableConnecting')
+          : t('chatUnavailableDisconnected'),
+      );
+      return;
+    }
     sendText(text);
     setInput('');
     setInputResetKey((k) => k + 1);
@@ -726,6 +730,12 @@ export default function ConversationScreen() {
       : connectionState === 'connecting'
         ? t('connectionConnecting')
         : t('connectionDisconnected');
+  const showConnectionBadge = __DEV__;
+  const showConnectionNotice = connectionState !== 'connected';
+  const connectionNoticeText =
+    connectionState === 'connecting'
+      ? t('chatUnavailableConnecting')
+      : t('chatUnavailableDisconnected');
 
   /** iOS：用键盘高度直接顶起根布局，替代 KAV（避免与 safe area 叠出缝，见 RN #52626） */
   const keyboardLift =
@@ -744,22 +754,25 @@ export default function ConversationScreen() {
         title={
           <View style={styles.headerTitleBlock}>
             <Text style={styles.headerTitle}>{tApp('name')}</Text>
-            <View
-              style={[
-                styles.statusBadge,
-                connectionState === 'connected' && styles.statusBadgeConnected,
-              ]}
-            >
-              <Text
+            {showConnectionBadge ? (
+              <View
                 style={[
-                  styles.statusBadgeText,
+                  styles.statusBadge,
                   connectionState === 'connected' &&
-                    styles.statusBadgeTextConnected,
+                    styles.statusBadgeConnected,
                 ]}
               >
-                {connectionLabel}
-              </Text>
-            </View>
+                <Text
+                  style={[
+                    styles.statusBadgeText,
+                    connectionState === 'connected' &&
+                      styles.statusBadgeTextConnected,
+                  ]}
+                >
+                  {connectionLabel}
+                </Text>
+              </View>
+            ) : null}
           </View>
         }
         backAccessibilityLabel={t('chatTitle')}
@@ -810,6 +823,16 @@ export default function ConversationScreen() {
           },
         ]}
       >
+        {showConnectionNotice ? (
+          <View style={styles.connectionNotice}>
+            <Text style={styles.connectionNoticeTitle}>
+              {t('chatUnavailableTitle')}
+            </Text>
+            <Text style={styles.connectionNoticeText}>
+              {connectionNoticeText}
+            </Text>
+          </View>
+        ) : null}
         <ChatInputBar
           value={input}
           onChangeText={setInput}
@@ -1028,6 +1051,28 @@ const styles = StyleSheet.create({
     shadowRadius: 12,
     elevation: 8,
   },
+  connectionNotice: {
+    marginHorizontal: 14,
+    marginTop: 14,
+    marginBottom: 4,
+    paddingHorizontal: 12,
+    paddingVertical: 10,
+    borderRadius: 14,
+    backgroundColor: 'rgba(186, 26, 26, 0.08)',
+    borderWidth: 1,
+    borderColor: 'rgba(186, 26, 26, 0.14)',
+  },
+  connectionNoticeTitle: {
+    fontSize: 13,
+    fontWeight: '700',
+    color: CHAT_COLORS.errorRed,
+    marginBottom: 2,
+  },
+  connectionNoticeText: {
+    fontSize: 13,
+    lineHeight: 18,
+    color: CHAT_COLORS.onSurface,
+  },
   inputBar: {
     flexDirection: 'row',
     alignItems: 'center',

app-expo/src/i18n/generated/resources.ts

@@ -66,6 +66,9 @@ interface Resources {
     cancel: 'Cancel';
     cancelRecording: 'Cancel recording';
     chatTitle: 'Conversation';
+    chatUnavailableConnecting: 'Reconnecting now. You can keep typing and send once the connection is back.';
+    chatUnavailableDisconnected: 'Connection lost. You can keep typing and send after reconnecting.';
+    chatUnavailableTitle: 'Chat unavailable';
     confirm: 'OK';
     confirmDeleteConversation: 'Are you sure you want to delete this conversation? It cannot be recovered.';
     connectionConnected: 'Connected';

app-expo/src/i18n/locales/en/conversation.json

@@ -1,6 +1,9 @@
 {
   "confirmDeleteConversation": "Are you sure you want to delete this conversation? It cannot be recovered.",
   "createError": "Unable to create conversation. Please check your network and try again.",
+  "chatUnavailableTitle": "Chat unavailable",
+  "chatUnavailableConnecting": "Reconnecting now. You can keep typing and send once the connection is back.",
+  "chatUnavailableDisconnected": "Connection lost. You can keep typing and send after reconnecting.",
   "confirm": "OK",
   "cancel": "Cancel",
   "delete": "Delete",

app-expo/src/i18n/locales/zh/conversation.json

@@ -1,6 +1,9 @@
 {
   "confirmDeleteConversation": "确定要删除此对话吗？删除后无法恢复。",
   "createError": "无法创建对话，请检查网络连接或稍后重试",
+  "chatUnavailableTitle": "聊天暂不可用",
+  "chatUnavailableConnecting": "正在重新连接。你仍可继续输入，恢复后再发送。",
+  "chatUnavailableDisconnected": "当前连接已断开。你仍可先输入，连接恢复后再发送。",
   "confirm": "知道了",
   "cancel": "取消",
   "delete": "删除",