feat: BluePlayButton 內建 TTS 邏輯重構 + TypeScript 錯誤修復

重構亮點:
• BluePlayButton 內建完整 TTS 播放邏輯
• 移除 8 個組件中 97 行重複代碼
• 組件使用極度簡化：複雜配置 → 一行代碼

技術優化:
• 修復 TypeScript "Type 'never'" 錯誤
• 重新設計邏輯流程，清晰的條件分支
• 支援標準 TTS + 自定義播放兩種模式

使用簡化:
• 從: <BluePlayButton isPlaying={state} onToggle={handler} />
• 到: <BluePlayButton text="hello" />

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/components/flashcards/FlashcardContentBlocks.tsx

@@ -146,11 +146,8 @@ export const FlashcardContentBlocks: React.FC<FlashcardContentBlocksProps> = ({
                   <BluePlayButton
                     text={flashcard.example}
                     lang="en-US"
-                    isPlaying={isPlayingExample}
-                    onToggle={onToggleExampleTTS}
-                    disabled={isPlayingWord}
                     size="md"
-                    title={isPlayingExample ? "點擊停止播放" : "點擊聽例句發音"}
+                    title="點擊聽例句發音"
                   />
                 </div>
               </div>

frontend/components/flashcards/FlashcardDetailHeader.tsx

@@ -30,11 +30,9 @@ export const FlashcardDetailHeader: React.FC<FlashcardDetailHeaderProps> = ({
           <BluePlayButton
             text={flashcard.word}
             lang="en-US"
-            isPlaying={isPlayingWord}
-            onToggle={onToggleWordTTS}
             disabled={isPlayingExample}
             size="md"
-            title={isPlayingWord ? "點擊停止播放" : "點擊聽詞彙發音"}
+            title="點擊聽詞彙發音"
           />
         </div>
       </div>

frontend/components/flashcards/FlashcardForm.tsx

@@ -13,26 +13,6 @@ interface FlashcardFormProps {
 }
 
 export function FlashcardForm({ initialData, isEdit = false, onSuccess, onCancel }: FlashcardFormProps) {
-  const [isPlayingWord, setIsPlayingWord] = useState(false)
-
-  // TTS 播放邏輯
-  const handleToggleWordTTS = (text: string, lang?: string) => {
-    if (isPlayingWord) {
-      speechSynthesis.cancel()
-      setIsPlayingWord(false)
-      return
-    }
-
-    const utterance = new SpeechSynthesisUtterance(text)
-    utterance.lang = lang || 'en-US'
-    utterance.rate = 0.8
-
-    utterance.onstart = () => setIsPlayingWord(true)
-    utterance.onend = () => setIsPlayingWord(false)
-    utterance.onerror = () => setIsPlayingWord(false)
-
-    speechSynthesis.speak(utterance)
-  }
 
   const [formData, setFormData] = useState<CreateFlashcardRequest>({
     word: initialData?.word || '',
@@ -151,8 +131,6 @@ export function FlashcardForm({ initialData, isEdit = false, onSuccess, onCancel
           {formData.pronunciation && (
             <BluePlayButton
               text={formData.word}
-              isPlaying={isPlayingWord}
-              onToggle={handleToggleWordTTS}
               size="sm"
               title="播放單詞"
             />

frontend/components/generate/IdiomDetailModal.tsx

@@ -34,32 +34,12 @@ export const IdiomDetailModal: React.FC<IdiomDetailModalProps> = ({
   onSaveIdiom,
   className = ''
 }) => {
-  const [isPlaying, setIsPlaying] = useState(false)
-
   if (!idiomPopup) {
     return null
   }
 
   const { analysis } = idiomPopup
 
-  const handlePlayPronunciation = (text: string, lang?: string) => {
-    if (isPlaying) {
-      speechSynthesis.cancel()
-      setIsPlaying(false)
-      return
-    }
-
-    const utterance = new SpeechSynthesisUtterance(text)
-    utterance.lang = lang || 'en-US'
-    utterance.rate = 0.8
-
-    utterance.onstart = () => setIsPlaying(true)
-    utterance.onend = () => setIsPlaying(false)
-    utterance.onerror = () => setIsPlaying(false)
-
-    speechSynthesis.speak(utterance)
-  }
-
   const handleSave = async () => {
     if (onSaveIdiom) {
       await onSaveIdiom(idiomPopup.idiom, analysis)
@@ -81,8 +61,6 @@ export const IdiomDetailModal: React.FC<IdiomDetailModalProps> = ({
               <BluePlayButton
                 text={analysis.idiom}
                 lang="en-US"
-                isPlaying={isPlaying}
-                onToggle={handlePlayPronunciation}
                 size="sm"
                 title="播放發音"
               />

frontend/components/review/review-tests/FlipMemoryTest.tsx

@@ -16,51 +16,6 @@ const FlipMemoryTestComponent: React.FC<FlipMemoryTestProps> = ({
   disabled = false
 }) => {
   const [isFlipped, setIsFlipped] = useState(false)
-  const [isPlayingWord, setIsPlayingWord] = useState(false)
-  const [isPlayingExample, setIsPlayingExample] = useState(false)
-
-  // TTS 播放邏輯
-  const handleToggleWordTTS = useCallback((text: string, lang?: string) => {
-    if (isPlayingWord) {
-      speechSynthesis.cancel()
-      setIsPlayingWord(false)
-      return
-    }
-
-    setIsPlayingExample(false)
-    speechSynthesis.cancel()
-
-    const utterance = new SpeechSynthesisUtterance(text)
-    utterance.lang = lang || 'en-US'
-    utterance.rate = 0.8
-
-    utterance.onstart = () => setIsPlayingWord(true)
-    utterance.onend = () => setIsPlayingWord(false)
-    utterance.onerror = () => setIsPlayingWord(false)
-
-    speechSynthesis.speak(utterance)
-  }, [isPlayingWord])
-
-  const handleToggleExampleTTS = useCallback((text: string, lang?: string) => {
-    if (isPlayingExample) {
-      speechSynthesis.cancel()
-      setIsPlayingExample(false)
-      return
-    }
-
-    setIsPlayingWord(false)
-    speechSynthesis.cancel()
-
-    const utterance = new SpeechSynthesisUtterance(text)
-    utterance.lang = lang || 'en-US'
-    utterance.rate = 0.8
-
-    utterance.onstart = () => setIsPlayingExample(true)
-    utterance.onend = () => setIsPlayingExample(false)
-    utterance.onerror = () => setIsPlayingExample(false)
-
-    speechSynthesis.speak(utterance)
-  }, [isPlayingExample])
   const [selectedConfidence, setSelectedConfidence] = useState<number | null>(null)
   const [cardHeight, setCardHeight] = useState<number>(400)
   const frontRef = useRef<HTMLDivElement>(null)
@@ -158,8 +113,6 @@ const FlipMemoryTestComponent: React.FC<FlipMemoryTestProps> = ({
                       <div onClick={(e) => e.stopPropagation()}>
                         <BluePlayButton
                           text={cardData.word}
-                          isPlaying={isPlayingWord}
-                          onToggle={handleToggleWordTTS}
                           size="sm"
                           title="播放單詞"
                         />
@@ -201,8 +154,6 @@ const FlipMemoryTestComponent: React.FC<FlipMemoryTestProps> = ({
                     <div className="absolute bottom-0 right-0" onClick={(e) => e.stopPropagation()}>
                       <BluePlayButton
                         text={cardData.example}
-                        isPlaying={isPlayingExample}
-                        onToggle={handleToggleExampleTTS}
                         size="sm"
                         title="播放例句"
                       />

frontend/components/review/review-tests/SentenceListeningTest.tsx

@@ -23,8 +23,6 @@ const SentenceListeningTestComponent: React.FC<SentenceListeningTestProps> = ({
 }) => {
   const [selectedAnswer, setSelectedAnswer] = useState<string | null>(null)
   const [showResult, setShowResult] = useState(false)
-  const [isPlayingExample, setIsPlayingExample] = useState(false)
-
   // 判斷是否已答題（選擇了答案）
   const hasAnswered = selectedAnswer !== null
 
@@ -37,32 +35,11 @@ const SentenceListeningTestComponent: React.FC<SentenceListeningTestProps> = ({
 
   const isCorrect = useMemo(() => selectedAnswer === cardData.example, [selectedAnswer, cardData.example])
 
-  // TTS 播放邏輯
-  const handleToggleTTS = useCallback((text: string, lang?: string) => {
-    if (isPlayingExample) {
-      speechSynthesis.cancel()
-      setIsPlayingExample(false)
-      return
-    }
-
-    const utterance = new SpeechSynthesisUtterance(text)
-    utterance.lang = lang || 'en-US'
-    utterance.rate = 0.8
-
-    utterance.onstart = () => setIsPlayingExample(true)
-    utterance.onend = () => setIsPlayingExample(false)
-    utterance.onerror = () => setIsPlayingExample(false)
-
-    speechSynthesis.speak(utterance)
-  }, [isPlayingExample])
-
   // 音頻播放區域
   const audioArea = (
     <div className="text-center">
       <BluePlayButton
         text={cardData.example}
-        isPlaying={isPlayingExample}
-        onToggle={handleToggleTTS}
         size="md"
         title="播放例句"
       />

frontend/components/shared/BluePlayButton.tsx

@@ -1,26 +1,28 @@
-import React from 'react'
+import React, { useState } from 'react'
 
 interface BluePlayButtonProps {
   text?: string
   lang?: string
-  isPlaying: boolean
-  onToggle: (text: string, lang?: string) => void
   disabled?: boolean
   className?: string
   size?: 'sm' | 'md' | 'lg'
   title?: string
+  onPlayStart?: () => void
+  onPlayEnd?: () => void
 }
 
 export const BluePlayButton: React.FC<BluePlayButtonProps> = ({
   text,
   lang = 'en-US',
-  isPlaying,
-  onToggle,
   disabled = false,
   className = '',
   size = 'md',
-  title
+  title,
+  onPlayStart,
+  onPlayEnd
 }) => {
+  const [isPlaying, setIsPlaying] = useState(false)
+
   const sizeClasses = {
     sm: 'w-8 h-8',
     md: 'w-10 h-10',
@@ -33,13 +35,52 @@ export const BluePlayButton: React.FC<BluePlayButtonProps> = ({
     lg: 'w-6 h-6'
   }
 
-  const handleClick = () => {
+  // 內建 TTS 邏輯
-    onToggle(text || '', lang)
+  const handleToggle = () => {
+    // 停止播放邏輯
+    if (isPlaying) {
+      speechSynthesis.cancel()
+      setIsPlaying(false)
+      if (onPlayEnd) onPlayEnd()
+      return
+    }
+
+    // 開始播放邏輯
+    if (onPlayStart) {
+      // 自定義播放場景（如錄音回放）
+      setIsPlaying(true)
+      onPlayStart()
+      setTimeout(() => {
+        setIsPlaying(false)
+        if (onPlayEnd) onPlayEnd()
+      }, 3000)
+    } else if (text) {
+      // 標準 TTS 播放
+      const utterance = new SpeechSynthesisUtterance(text)
+      utterance.lang = lang
+      utterance.rate = 0.8
+
+      utterance.onstart = () => {
+        setIsPlaying(true)
+      }
+
+      utterance.onend = () => {
+        setIsPlaying(false)
+        if (onPlayEnd) onPlayEnd()
+      }
+
+      utterance.onerror = () => {
+        setIsPlaying(false)
+        if (onPlayEnd) onPlayEnd()
+      }
+
+      speechSynthesis.speak(utterance)
+    }
   }
 
   return (
     <button
-      onClick={handleClick}
+      onClick={handleToggle}
       disabled={disabled}
       title={title || (isPlaying ? "點擊停止播放" : "點擊播放發音")}
       className={`group relative ${sizeClasses[size]} rounded-full shadow-lg transform transition-all duration-200

frontend/components/word/WordPopup.tsx

@@ -24,32 +24,12 @@ export const WordPopup: React.FC<WordPopupProps> = ({
   isSaving = false
 }) => {
   const { getWordProperty } = useWordAnalysis()
-  const [isPlaying, setIsPlaying] = useState(false)
-
   if (!selectedWord || !analysis?.[selectedWord]) {
     return null
   }
 
   const wordAnalysis = analysis[selectedWord]
 
-  const handlePlayPronunciation = (text: string, lang?: string) => {
-    if (isPlaying) {
-      speechSynthesis.cancel()
-      setIsPlaying(false)
-      return
-    }
-
-    const utterance = new SpeechSynthesisUtterance(text)
-    utterance.lang = lang || 'en-US'
-    utterance.rate = 0.8
-
-    utterance.onstart = () => setIsPlaying(true)
-    utterance.onend = () => setIsPlaying(false)
-    utterance.onerror = () => setIsPlaying(false)
-
-    speechSynthesis.speak(utterance)
-  }
-
   const handleSaveWord = async () => {
     if (onSaveWord) {
       await onSaveWord(selectedWord, wordAnalysis)
@@ -78,8 +58,6 @@ export const WordPopup: React.FC<WordPopupProps> = ({
               <BluePlayButton
                 text={getWordProperty(wordAnalysis, 'word') || selectedWord}
                 lang="en-US"
-                isPlaying={isPlaying}
-                onToggle={handlePlayPronunciation}
                 size="sm"
                 title="播放發音"
               />