fix(links): include TCP HTTP host header in share links

The inbound form intentionally only exposes the response side of the
TCP HTTP header object (xray-core's inbound listener reads the
response object, not request — see the existing comment in
InboundFormModal). But the share-link generators were still reading
the Host header from request.headers, so the configured value ended
up in tcpSettings.header.response.headers while the link query
emitted host= (empty).

Fix the host lookup in both code paths:
- sub/subService.go: applyShareNetworkParams (VLESS / Trojan /
  Shadowsocks share URLs) and applyVmessNetworkParams (the VMess
  base64 JSON link) now try header.response.headers first and fall
  back to request.headers for legacy / hand-edited configs.
- frontend/src/lib/xray/inbound-link.ts mirrors the same fallback in
  the three TCP HTTP branches (VMess obj, VLESS params, the shared
  Trojan+Shadowsocks writer) so the JS-side generator used by the
  API docs preview stays in sync with the Go output.

Also restore the request-side inputs (version / method / path /
headers) under the TCP HTTP toggle in InboundFormModal. They were
previously removed because xray-core ignores them on the inbound
side, but they're still useful when copying the same config out to
an outbound or hand-tuning the share link, and they no longer
mislead users about Host — the link now derives Host from
response.headers.host where the response-only form writes it.

sub/subService.go

@@ -696,8 +696,17 @@ func applyShareNetworkParams(stream map[string]any, streamNetwork string, params
 			request := header["request"].(map[string]any)
 			requestPath, _ := request["path"].([]any)
 			params["path"] = requestPath[0].(string)
-			headers, _ := request["headers"].(map[string]any)
-			params["host"] = searchHost(headers)
+			host := ""
+			if response, ok := header["response"].(map[string]any); ok {
+				if respHeaders, ok := response["headers"].(map[string]any); ok {
+					host = searchHost(respHeaders)
+				}
+			}
+			if host == "" {
+				headers, _ := request["headers"].(map[string]any)
+				host = searchHost(headers)
+			}
+			params["host"] = host
 			params["headerType"] = "http"
 		}
 	case "kcp":
@@ -743,8 +752,17 @@ func applyVmessNetworkParams(stream map[string]any, network string, obj map[stri
 			request := header["request"].(map[string]any)
 			requestPath, _ := request["path"].([]any)
 			obj["path"] = requestPath[0].(string)
-			headers, _ := request["headers"].(map[string]any)
-			obj["host"] = searchHost(headers)
+			host := ""
+			if response, ok := header["response"].(map[string]any); ok {
+				if respHeaders, ok := response["headers"].(map[string]any); ok {
+					host = searchHost(respHeaders)
+				}
+			}
+			if host == "" {
+				headers, _ := request["headers"].(map[string]any)
+				host = searchHost(headers)
+			}
+			obj["host"] = host
 		}
 	case "kcp":
 		applyKcpShareObj(stream, obj)