fix: host JSON field now returns hostname instead of IP (#2333)

- Changed 'host' field to return actual hostname (e.g., example.com)
- Added new 'host_ip' field for the resolved/dialed IP address
- Fixes semantic issue where 'host' was incorrectly returning IP

runner/runner.go

@@ -2330,7 +2330,8 @@ retry:
 		Pipeline:         pipeline,
 		HTTP2:            http2,
 		Method:           method,
-		Host:             ip,
+		Host:             parsed.Hostname(),
+		HostIP:           ip,
 		A:                ips4,
 		AAAA:             ips6,
 		CNAMEs:           cnames,

runner/types.go

@@ -59,6 +59,7 @@ type Result struct {
 	ContentType        string                        `json:"content_type,omitempty" csv:"content_type" mapstructure:"content_type"`
 	Method             string                        `json:"method,omitempty" csv:"method" mapstructure:"method"`
 	Host               string                        `json:"host,omitempty" csv:"host" mapstructure:"host"`
+	HostIP             string                        `json:"host_ip,omitempty" csv:"host_ip" mapstructure:"host_ip"`
 	Path               string                        `json:"path,omitempty" csv:"path" mapstructure:"path"`
 	FavIconMMH3        string                        `json:"favicon,omitempty" csv:"favicon" mapstructure:"favicon"`
 	FavIconMD5         string                        `json:"favicon_md5,omitempty" csv:"favicon_md5" mapstructure:"favicon_md5"`