feat: 重构和更新 Claude Code 验证器组件

- 重构 src/utils/contents.js，添加完整的 prompt 定义和相似度检测功能
- 删除重复的 src/utils/text-similarity.js 文件
- 更新 claudeCodeValidator.js 中的验证逻辑和错误处理

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

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

src/utils/text-similarity.js

@@ -1,81 +0,0 @@
-const MAX_TEXT_LENGTH = 4000
-
-function normalize(value) {
-  return value.replace(/\s+/g, ' ').trim().toLowerCase()
-}
-
-function clamp(value) {
-  if (value.length <= MAX_TEXT_LENGTH) {
-    return value
-  }
-
-  // 截断极长文本，避免耗时的相似度计算
-  return value.slice(0, MAX_TEXT_LENGTH)
-}
-
-function buildBigramStats(text) {
-  const stats = new Map()
-
-  for (let index = 0; index < text.length - 1; index += 1) {
-    const gram = text[index] + text[index + 1]
-    stats.set(gram, (stats.get(gram) || 0) + 1)
-  }
-
-  return {
-    stats,
-    total: Math.max(text.length - 1, 0)
-  }
-}
-
-function diceCoefficient(left, right) {
-  if (left === right) {
-    return 1
-  }
-
-  if (left.length < 2 || right.length < 2) {
-    return left === right && left.length > 0 ? 1 : 0
-  }
-
-  const { stats: leftStats, total: leftTotal } = buildBigramStats(left)
-  const { stats: rightStats, total: rightTotal } = buildBigramStats(right)
-
-  let intersection = 0
-  const [smaller, larger] =
-    leftStats.size <= rightStats.size ? [leftStats, rightStats] : [rightStats, leftStats]
-
-  smaller.forEach((count, gram) => {
-    if (larger.has(gram)) {
-      intersection += Math.min(count, larger.get(gram))
-    }
-  })
-
-  if (leftTotal + rightTotal === 0) {
-    return 0
-  }
-
-  return (2 * intersection) / (leftTotal + rightTotal)
-}
-
-function simple(actual, expected, threshold = 0.9) {
-  if (typeof expected !== 'string' || !expected.trim()) {
-    throw new Error('期望的提示词必须是非空字符串')
-  }
-
-  if (typeof actual !== 'string' || !actual.trim()) {
-    return { score: 0, threshold, passed: false }
-  }
-
-  const normalizedExpected = clamp(normalize(expected))
-  const normalizedActual = clamp(normalize(actual))
-  const score = diceCoefficient(normalizedActual, normalizedExpected)
-
-  return {
-    score,
-    threshold,
-    passed: score >= threshold
-  }
-}
-
-module.exports = {
-  simple
-}