chore: add db log masking

internal/utils/crypto.go

@@ -112,3 +112,18 @@ func MaskSecrets(text string, secrets []string) string {
 	}
 	return text
 }
+
+// MaskString 对字符串进行脱敏处理，保留首尾，中间用星号遮掩
+func MaskString(s string) string {
+	if s == "" {
+		return ""
+	}
+	n := len(s)
+	if n <= 3 {
+		return "***"
+	}
+	if n <= 6 {
+		return s[:1] + "***" + s[n-1:]
+	}
+	return s[:2] + "****" + s[n-2:]
+}