fix(web): show subscription outbounds in dialer proxy dropdown (#5540)

The outbound edit form's Dialer Proxy dropdown only listed local outbounds because subscriptionOutboundTags never reached OutboundsTab. Thread it through XrayPage and feed a dedicated dialerProxyTags list (local non-blackhole outbounds plus subscription tags, excluding the outbound being edited) to SockoptForm. Tag-uniqueness validation still uses the full local tag set, so the blackhole outbound is hidden only from the dropdown, matching HostSockoptForm.

frontend/src/pages/xray/XrayPage.tsx

@@ -221,6 +221,7 @@ export default function XrayPage() {
             testingAll={testingAll}
             inboundTags={inboundTags}
             subscriptionOutbounds={subscriptionOutbounds}
+            subscriptionOutboundTags={subscriptionOutboundTags}
             isMobile={isMobile}
             onResetTraffic={resetOutboundsTraffic}
             onTest={onTestOutbound}

frontend/src/pages/xray/outbounds/OutboundFormModal.tsx

@@ -83,6 +83,7 @@ interface OutboundFormModalProps {
   open: boolean;
   outbound: Record<string, unknown> | null;
   existingTags: string[];
+  dialerProxyTags?: string[];
   onClose: () => void;
   onConfirm: (outbound: Record<string, unknown>) => void;
 }
@@ -92,6 +93,7 @@ export default function OutboundFormModal({
   open,
   outbound: outboundProp,
   existingTags,
+  dialerProxyTags,
   onClose,
   onConfirm,
 }: OutboundFormModalProps) {
@@ -514,7 +516,7 @@ export default function OutboundFormModal({
                     {security === 'reality' && realityAllowed && <RealityForm />}
 
                     {((streamAllowed && network) || !streamAllowed || protocol === 'wireguard') && (
-                      <SockoptForm form={form} outboundTags={existingTags} />
+                      <SockoptForm form={form} outboundTags={dialerProxyTags ?? existingTags} />
                     )}
 
                     <FinalMaskForm

frontend/src/pages/xray/outbounds/OutboundsTab.tsx

@@ -75,6 +75,7 @@ interface OutboundsTabProps {
   testingAll: boolean;
   inboundTags: string[];
   subscriptionOutbounds?: unknown[];
+  subscriptionOutboundTags?: string[];
   isMobile: boolean;
   onResetTraffic: (tag: string) => void;
   onTest: (index: number, mode: string) => void;
@@ -94,6 +95,7 @@ export default function OutboundsTab({
   testingAll,
   inboundTags: _inboundTags,
   subscriptionOutbounds,
+  subscriptionOutboundTags,
   isMobile,
   onResetTraffic,
   onTest,
@@ -140,6 +142,19 @@ export default function OutboundsTab({
 
   const rows = useMemo(() => outbounds.map((o, i) => ({ ...o, key: i })), [outbounds]);
 
+  const dialerProxyTags = useMemo(() => {
+    const tags = new Set<string>();
+    (templateSettings?.outbounds || []).forEach((o, i) => {
+      if (i === editingIndex) return;
+      if (o?.protocol === 'blackhole') return;
+      if (o?.tag) tags.add(o.tag);
+    });
+    for (const tag of subscriptionOutboundTags || []) {
+      if (tag) tags.add(tag);
+    }
+    return [...tags];
+  }, [templateSettings?.outbounds, editingIndex, subscriptionOutboundTags]);
+
   const mutate = useCallback(
     (mutator: (next: XraySettingsValue) => void) => {
       setTemplateSettings((prev) => {
@@ -521,6 +536,7 @@ export default function OutboundsTab({
           open={modalOpen}
           outbound={editingOutbound}
           existingTags={existingTags}
+          dialerProxyTags={dialerProxyTags}
           onClose={() => setModalOpen(false)}
           onConfirm={onConfirm}
         />