refactor(chat): simplify input send button

src/app/chat/components/chat-input-bar.module.css

@@ -24,13 +24,6 @@
   box-shadow: 0 4px 12px var(--color-input-box-shadow, rgba(0, 0, 0, 0.1));
 }
 
-.barExpanded {
-  padding-right: 0;
-  padding-bottom: 0;
-  padding-left: 0;
-  background: #fff1f4;
-}
-
 /* 内层：白底 + 大圆角（Dart AppRadius.radius32）+ focused 时 accent 边框 */
 .row {
   display: flex;
@@ -46,9 +39,3 @@
 .rowFocused {
   border-color: var(--color-accent, #f84d96);
 }
-
-.rowExpanded {
-  margin: 0 var(--spacing-md, 12px) var(--spacing-md, 12px);
-  border-color: #ff8fc7;
-  box-shadow: 0 2px 10px rgba(246, 87, 160, 0.16);
-}

src/app/chat/components/chat-input-bar.tsx

@@ -2,11 +2,9 @@
 import { useRef, useState } from "react";
 
 import { useChatDispatch } from "@/stores/chat/chat-context";
-import { useUserState } from "@/stores/user/user-context";
 import { useKeyboardHeight } from "@/hooks";
 import { Logger } from "@/utils";
 
-import { ChatInputActionPanel } from "./chat-input-action-panel";
 import { ChatInputTextField } from "./chat-input-text-field";
 import { ChatSendButton } from "./chat-send-button";
 import styles from "./chat-input-bar.module.css";
@@ -19,15 +17,11 @@ export interface ChatInputBarProps {
 
 export function ChatInputBar({ disabled = false }: ChatInputBarProps) {
   const dispatch = useChatDispatch();
-  const { currentUser } = useUserState();
   const [input, setInput] = useState("");
   const [isFocused, setIsFocused] = useState(false);
-  const [isActionPanelOpen, setIsActionPanelOpen] = useState(false);
   const textareaRef = useRef<HTMLTextAreaElement>(null);
 
   const hasContent = input.trim().length > 0;
-  const isActive = isFocused || isActionPanelOpen;
-  const voiceMinutesRemaining = currentUser?.voiceMinutesRemaining ?? 0;
 
   useKeyboardHeight({
     targetRef: textareaRef,
@@ -37,9 +31,6 @@ export function ChatInputBar({ disabled = false }: ChatInputBarProps) {
 
   const handleInputChange = (value: string) => {
     setInput(value);
-    if (value.trim().length > 0) {
-      setIsActionPanelOpen(false);
-    }
   };
 
   const handleSend = () => {
@@ -56,34 +47,9 @@ export function ChatInputBar({ disabled = false }: ChatInputBarProps) {
     textareaRef.current?.focus();
   };
 
-  const handleActionButtonClick = () => {
-    if (hasContent) {
-      handleSend();
-      return;
-    }
-
-    textareaRef.current?.blur();
-    setIsFocused(false);
-    setIsActionPanelOpen((open) => !open);
-  };
-
-  const handleVoiceMessageClick = () => {
-    log.debug("[chat-input-bar] voice message action clicked", {
-      voiceMinutesRemaining,
-    });
-  };
-
   return (
-    <div
-      className={`${styles.bar} ${isActive ? styles.barFocused : ""} ${
-        isActionPanelOpen ? styles.barExpanded : ""
-      }`}
-    >
-      <div
-        className={`${styles.row} ${isActive ? styles.rowFocused : ""} ${
-          isActionPanelOpen ? styles.rowExpanded : ""
-        }`}
-      >
+    <div className={`${styles.bar} ${isFocused ? styles.barFocused : ""}`}>
+      <div className={`${styles.row} ${isFocused ? styles.rowFocused : ""}`}>
         <ChatInputTextField
           ref={textareaRef}
           value={input}
@@ -94,17 +60,9 @@ export function ChatInputBar({ disabled = false }: ChatInputBarProps) {
         />
         <ChatSendButton
           disabled={disabled}
-          hasContent={hasContent}
-          isExpanded={isActionPanelOpen}
-          onClick={handleActionButtonClick}
+          onClick={handleSend}
         />
       </div>
-      {isActionPanelOpen ? (
-        <ChatInputActionPanel
-          voiceMinutesRemaining={voiceMinutesRemaining}
-          onVoiceMessageClick={handleVoiceMessageClick}
-        />
-      ) : null}
     </div>
   );
 }

src/app/chat/components/chat-send-button.tsx

@@ -8,38 +8,30 @@
  *   - 默认：粉色背景 + 渐变边缘
  *   - 聚焦 / 激活：完整 primaryGradient（accent → 透明）
  *
- * 图标：空输入显示 <Plus />，有内容时显示 <ArrowUp />
+ * 图标：固定显示 <ArrowUp />，按钮只负责发送消息。
  */
-import { ArrowUp, Plus } from "lucide-react";
+import { ArrowUp } from "lucide-react";
 
 import styles from "./chat-send-button.module.css";
 
 export interface ChatSendButtonProps {
   disabled: boolean;
-  hasContent: boolean;
-  isExpanded?: boolean;
   onClick: () => void;
 }
 
 export function ChatSendButton({
   disabled,
-  hasContent,
-  isExpanded = false,
   onClick,
 }: ChatSendButtonProps) {
-  const Icon = hasContent ? ArrowUp : Plus;
-  const ariaLabel = hasContent ? "Send message" : "Open chat actions";
-
   return (
     <button
       type="button"
       className={`${styles.button} ${disabled ? "" : styles.buttonActive}`}
       disabled={disabled}
       onClick={onClick}
-      aria-expanded={hasContent ? undefined : isExpanded}
-      aria-label={ariaLabel}
+      aria-label="Send message"
     >
-      <Icon className={styles.icon} size={24} aria-hidden="true" />
+      <ArrowUp className={styles.icon} size={24} aria-hidden="true" />
     </button>
   );
 }