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.

frontend/src/lib/xray/inbound-link.ts

@@ -184,7 +184,9 @@ export function genVmessLink(input: GenVmessLinkInput): string {
         const request = header.request;
         if (request) {
           obj.path = request.path.join(',');
-          const host = getHeaderValue(request.headers, 'host');
+          const host =
+            getHeaderValue(header.response?.headers, 'host')
+            || getHeaderValue(request.headers, 'host');
           if (host) obj.host = host;
         }
       }
@@ -309,7 +311,9 @@ export function genVlessLink(input: GenVlessLinkInput): string {
       const request = tcp.header.request;
       if (request) {
         params.set('path', request.path.join(','));
-        const host = getHeaderValue(request.headers, 'host');
+        const host =
+          getHeaderValue(tcp.header.response?.headers, 'host')
+          || getHeaderValue(request.headers, 'host');
         if (host) params.set('host', host);
         params.set('headerType', 'http');
       }
@@ -387,7 +391,9 @@ function writeNetworkParams(stream: NonNullable<Inbound['streamSettings']>, para
       const request = tcp.header.request;
       if (request) {
         params.set('path', request.path.join(','));
-        const host = getHeaderValue(request.headers, 'host');
+        const host =
+          getHeaderValue(tcp.header.response?.headers, 'host')
+          || getHeaderValue(request.headers, 'host');
         if (host) params.set('host', host);
         params.set('headerType', 'http');
       }