feat(练习): 添加完成练习时的庆祝动画

- 创建 CelebrationAnimation 组件，使用 CSS 动画实现彩带效果
- 矩阵练习完成最后一个格子时显示庆祝动画
- 过程详情练习完成所有条目时显示庆祝动画
- 动画持续2秒后自动消失

via [HAPI](https://hapi.run)

Co-Authored-By: HAPI <noreply@hapi.run>

src/components/practice/CelebrationAnimation.tsx

@@ -0,0 +1,65 @@
+import { useEffect, useState } from 'react'
+
+interface CelebrationAnimationProps {
+  onComplete?: () => void
+}
+
+export function CelebrationAnimation({ onComplete }: CelebrationAnimationProps) {
+  const [confetti] = useState(() =>
+    Array.from({ length: 30 }, (_, i) => ({
+      id: i,
+      left: Math.random() * 100,
+      delay: Math.random() * 0.5,
+      duration: 1.5 + Math.random() * 0.5,
+      color: ['#f59e0b', '#3b82f6', '#ef4444', '#10b981', '#8b5cf6'][Math.floor(Math.random() * 5)],
+    }))
+  )
+
+  useEffect(() => {
+    const timer = setTimeout(() => {
+      onComplete?.()
+    }, 2000)
+    return () => clearTimeout(timer)
+  }, [onComplete])
+
+  return (
+    <div className="fixed inset-0 pointer-events-none z-50 overflow-hidden">
+      {/* 恭喜文字 */}
+      <div className="absolute inset-0 flex items-center justify-center">
+        <div className="text-6xl font-bold text-transparent bg-clip-text bg-gradient-to-r from-yellow-400 via-pink-500 to-purple-600 animate-bounce">
+          🎉 恭喜完成！
+        </div>
+      </div>
+
+      {/* 彩带 */}
+      {confetti.map((item) => (
+        <div
+          key={item.id}
+          className="absolute top-0 w-2 h-8 rounded-full animate-fall"
+          style={{
+            left: `${item.left}%`,
+            backgroundColor: item.color,
+            animationDelay: `${item.delay}s`,
+            animationDuration: `${item.duration}s`,
+          }}
+        />
+      ))}
+
+      <style>{`
+        @keyframes fall {
+          0% {
+            transform: translateY(-100px) rotate(0deg);
+            opacity: 1;
+          }
+          100% {
+            transform: translateY(100vh) rotate(360deg);
+            opacity: 0.3;
+          }
+        }
+        .animate-fall {
+          animation: fall linear forwards;
+        }
+      `}</style>
+    </div>
+  )
+}

src/pages/ProcessDetailPage.tsx

@@ -5,6 +5,7 @@ import { getProcessDetail, processes } from '@/data'
 import { useState, useEffect, useMemo, useCallback, useRef } from 'react'
 import { InputArea } from '@/components/practice/InputArea'
 import { normalizeAnswer } from '@/utils/practice'
+import { CelebrationAnimation } from '@/components/practice/CelebrationAnimation'
 
 type IttoSection = 'inputs' | 'tools' | 'outputs'
 type CharStatus = 'pending' | 'correct' | 'error'
@@ -102,6 +103,9 @@ export function ProcessDetailPage() {
   const longPressTimerRef = useRef<number | null>(null)
   const autoAdvanceTimerRef = useRef<number | null>(null)
 
+  // 庆祝动画
+  const [showCelebration, setShowCelebration] = useState(false)
+
   const currentPracticeItem = useMemo(
     () => practiceItems.find((item) => item.id === currentPracticeId) ?? null,
     [practiceItems, currentPracticeId]
@@ -234,7 +238,15 @@ export function ProcessDetailPage() {
         setAnsweredItems((prev) => new Set(prev).add(currentPracticeItem.id))
         clearAutoAdvanceTimer()
         if (currentPracticeIndex === practiceItems.length - 1) {
-          autoAdvanceTimerRef.current = window.setTimeout(() => exitPractice(), 500)
+          // 最后一个条目，显示庆祝动画
+          autoAdvanceTimerRef.current = window.setTimeout(() => {
+            setShowCelebration(true)
+            // 庆祝动画结束后退出练习
+            setTimeout(() => {
+              setShowCelebration(false)
+              exitPractice()
+            }, 2000)
+          }, 500)
         } else {
           autoAdvanceTimerRef.current = window.setTimeout(() => {
             setCurrentPracticeId(practiceItems[currentPracticeIndex + 1].id)
@@ -743,6 +755,11 @@ export function ProcessDetailPage() {
           </Link>
         ) : <div />}
       </motion.div>
+
+      {/* 庆祝动画 */}
+      {showCelebration && (
+        <CelebrationAnimation onComplete={() => setShowCelebration(false)} />
+      )}
     </div>
   )
 }

src/pages/ProcessPracticePage.tsx

@@ -9,6 +9,7 @@ import {
 import { PracticeMatrix } from '@/components/practice/PracticeMatrix'
 import { InputArea } from '@/components/practice/InputArea'
 import { HintInfo } from '@/components/practice/HintInfo'
+import { CelebrationAnimation } from '@/components/practice/CelebrationAnimation'
 
 type CharStatus = 'pending' | 'correct' | 'error'
 
@@ -62,6 +63,9 @@ export default function ProcessPracticePage() {
   const [inputLocked, setInputLocked] = useState(false)
   const latestInputRef = useRef<string[]>([])
 
+  // 庆祝动画
+  const [showCelebration, setShowCelebration] = useState(false)
+
   // 初始化输入框
   useEffect(() => {
     const currentCell = cellSequence.find((c) => c.id === currentCellId)
@@ -184,9 +188,22 @@ export default function ProcessPracticePage() {
 
       if (isCorrect) {
         setAnsweredCells((prev) => new Map(prev).set(currentCellId, true))
-        setTimeout(() => {
+
-          moveToNextCell()
+        // 检查是否完成所有格子
-        }, 300)
+        const currentIndex = cellSequence.findIndex((c) => c.id === currentCellId)
+        const isLastCell = currentIndex === cellSequence.length - 1
+
+        if (isLastCell) {
+          // 最后一个格子，显示庆祝动画
+          setTimeout(() => {
+            setShowCelebration(true)
+          }, 300)
+        } else {
+          // 不是最后一个，继续下一个
+          setTimeout(() => {
+            moveToNextCell()
+          }, 300)
+        }
       } else if (isComplete) {
         setLastErrorTimestamp(Date.now())
       }
@@ -495,6 +512,11 @@ export default function ProcessPracticePage() {
         aria-live="polite"
         aria-atomic="true"
       />
+
+      {/* 庆祝动画 */}
+      {showCelebration && (
+        <CelebrationAnimation onComplete={() => setShowCelebration(false)} />
+      )}
     </div>
   )
 }