feat(inbounds): support Unix domain socket path in Listen field (#4429)

UDS listen already worked for proxying (the listen string is passed to xray verbatim and port 0 is accepted), and the Go sub/link layer already ignores the bind listen. The only gap was the frontend resolveAddr, which would put a socket-path listen into share/sub links (e.g. vless://uuid@/run/xray/x.sock:0). resolveAddr now treats a path-style listen (starting with / or @) as having no client-reachable address and falls back to hostOverride/hostname. Adds a test and a Listen-field help hint across all locales.

frontend/src/pages/inbounds/form/InboundFormModal.tsx

@@ -481,7 +481,11 @@ export default function InboundFormModal({
         <Select disabled={mode === 'edit'} options={PROTOCOL_OPTIONS} />
       </Form.Item>
 
-      <Form.Item name="listen" label={t('pages.inbounds.address')}>
+      <Form.Item
+        name="listen"
+        label={t('pages.inbounds.address')}
+        extra={t('pages.inbounds.form.listenHelp')}
+      >
         <Input placeholder={t('pages.inbounds.monitorDesc')} />
       </Form.Item>