chore: import Local-Cursor v1.1.8 source snapshot

Includes the current working directory changes. Historical commits and release binaries are excluded to limit Gitea storage.
Source base: d7515973fbfd6dd2001fa156c483455b8081c7cb

internal/historymetrics/report.go

@@ -0,0 +1,36 @@
+package historymetrics
+
+type Summary struct {
+	ProviderCallsTotal int      `json:"providerCallsTotal"`
+	TurnsTotal         int      `json:"turnsTotal"`
+	ValidTurnsTotal    int      `json:"validTurnsTotal"`
+	InvalidTurnsTotal  int      `json:"invalidTurnsTotal"`
+	RequestTokensTotal int64    `json:"requestTokensTotal"`
+	PromptTokensTotal  int64    `json:"promptTokensTotal"`
+	CacheReadTokens    int64    `json:"cacheReadTokens"`
+	CacheWriteTokens   int64    `json:"cacheWriteTokens"`
+	CacheHitRate       *float64 `json:"cacheHitRate"`
+}
+
+type Totals struct {
+	InputTokens        int64
+	OutputTokens       int64
+	CacheReadTokens    int64
+	CacheWriteTokens   int64
+	PromptTokensTotal  int64
+	RequestTokensTotal int64
+	// IncludeCacheWriteInHitRate 控制 CacheHitRate 分母是否计入缓存写入 Token。
+	IncludeCacheWriteInHitRate bool
+}
+
+func cacheHitRateFromTotals(totals Totals) *float64 {
+	inputCacheTokensTotal := totals.CacheReadTokens + totals.InputTokens
+	if totals.IncludeCacheWriteInHitRate {
+		inputCacheTokensTotal += totals.CacheWriteTokens
+	}
+	if inputCacheTokensTotal <= 0 {
+		return nil
+	}
+	value := float64(totals.CacheReadTokens) / float64(inputCacheTokensTotal)
+	return &value
+}