feat(tls,reality): port xray TLS/REALITY fields, cert-hash helpers, fallback UX

TLS: add verifyPeerCertByName (vcn) to inbound settings + emit in both share-link generators (frontend + Go sub) and outbound parser; the allowInsecure replacement xray removed after 2026-06-01. Add server-side curvePreferences, masterKeyLog, echSockopt (passthrough + form) at tlsSettings top-level so they survive the panel-only settings strip.

REALITY: add limitFallbackUpload/Download (afterBytes/bytesPerSec/burstBytesPerSec) with per-field tooltips, plus masterKeyLog. Verified field names/semantics against pinned xray v1.260327.1 (bytesPerSec=0 disables).

Hosts: fix verify_peer_cert_by_name column bool->string (xray expects comma-separated names) with an idempotent, history-gate-free migration (SQLite typeof blank; Postgres ALTER once); emit vcn for hosts/external proxies.

Server: add getCertHash (local cert DER SHA-256) and getRemoteCertHash (xray tls ping) endpoints + api-docs; wire pinned-cert field buttons. Drop the meaningless random-hash button.

Xray UI: metrics endpoint (listen/tag) config in Basics; import/export for routing rules and outbounds.

Fallbacks card: compact empty state, header-aligned actions, responsive labeled grid rows.

i18n: add all new keys to every locale; drop unused generateRandomPin.

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

@@ -244,7 +244,8 @@ export default function InboundFormModal({
     randomizeShortIds,
     getNewEchCert,
     clearEchCert,
-    generateRandomPinHash,
+    pinFromCert,
+    pinFromRemote,
     setCertFromPanel,
     clearCertFiles,
     onSecurityChange,
@@ -854,7 +855,8 @@ export default function InboundFormModal({
           saving={saving}
           setCertFromPanel={setCertFromPanel}
           clearCertFiles={clearCertFiles}
-          generateRandomPinHash={generateRandomPinHash}
+          pinFromCert={pinFromCert}
+          pinFromRemote={pinFromRemote}
           getNewEchCert={getNewEchCert}
           clearEchCert={clearEchCert}
         />