feat(mtproto): add MTProto (FakeTLS) protocol via managed mtg sidecar (#5076)

* feat(mtproto): add MTProto (FakeTLS) protocol via managed mtg sidecar

Xray-core has no mtproto proxy, so mtproto inbounds run as standalone
mtg (9seconds/mtg) sidecar processes managed by the panel — one per
inbound — and are excluded from the generated Xray config entirely.

- model: MTProto protocol constant, validator, and FakeTLS secret
  helpers (GenerateFakeTLSSecret/HealMtprotoSecret)
- mtproto package: per-inbound mtg process manager with reconcile,
  graceful stop, and best-effort Prometheus traffic scraping
- runtime: delegate mtproto inbounds to the mtg manager instead of the
  Xray gRPC API; skip mtproto when building the Xray config
- web: boot reconcile + StopAll wiring, periodic reconcile/traffic job,
  port-conflict transport, secret healing on inbound add/update
- sub: tg:// proxy share-link generation
- frontend: protocol option, Zod schema, Protocol tab (FakeTLS domain +
  regenerable secret), info-modal link, and i18n
- provisioning: fetch mtg v2.2.8 in install.sh, DockerInit.sh, and the
  Linux + Windows release workflows

* fix

* fix

* fix: address Copilot review comments on mtproto PR

- web/web.go: create NewMtprotoJob once and reuse for cron + initial run
- mtproto/manager.go: StopAll cleans up per-inbound config files on shutdown
- mtproto/manager.go: CollectTraffic releases mutex before HTTP scrapes to
  avoid blocking Ensure/Reconcile/Remove during network I/O
- database/model/model.go: panic on crypto/rand failure in mtprotoRandomMiddle
  instead of silently producing a weak all-zero secret
- install.sh: fix chmod to handle renamed bin/mtg-linux-arm on armv5/v6/v7

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

@@ -54,6 +54,7 @@ import {
   HttpFields,
   HysteriaFields,
   MixedFields,
+  MtprotoFields,
   ShadowsocksFields,
   TunFields,
   TunnelFields,
@@ -578,6 +579,8 @@ export default function InboundFormModal({
       {protocol === Protocols.HTTP && <HttpFields />}
       {protocol === Protocols.MIXED && <MixedFields mixedUdpOn={mixedUdpOn} />}
 
+      {protocol === Protocols.MTPROTO && <MtprotoFields />}
+
       {protocol === Protocols.SHADOWSOCKS && <ShadowsocksFields form={form} isSSWith2022={isSSWith2022} />}
 
       {protocol === Protocols.VLESS && <VlessFields saving={saving} selectedVlessAuth={selectedVlessAuth} network={network} security={security} getNewVlessEnc={getNewVlessEnc} clearVlessEnc={clearVlessEnc} />}
@@ -883,6 +886,7 @@ export default function InboundFormModal({
               Protocols.TUNNEL,
               Protocols.TUN,
               Protocols.WIREGUARD,
+              Protocols.MTPROTO,
             ] as string[]).includes(protocol) || isFallbackHost
               ? [{ key: 'protocol', label: t('pages.inbounds.protocol'), children: protocolTab, forceRender: true }]
               : []),

frontend/src/pages/inbounds/form/protocols/index.ts

@@ -5,4 +5,5 @@ export { default as WireguardFields } from './wireguard';
 export { default as HysteriaFields } from './hysteria';
 export { default as HttpFields } from './http';
 export { default as MixedFields } from './mixed';
+export { default as MtprotoFields } from './mtproto';
 export { default as VlessFields } from './vless';

frontend/src/pages/inbounds/form/protocols/mtproto.tsx

@@ -0,0 +1,40 @@
+import { useTranslation } from 'react-i18next';
+import { Alert, Button, Form, Input, Space } from 'antd';
+import { ReloadOutlined } from '@ant-design/icons';
+
+import { generateMtprotoSecret, mtprotoSecretForDomain } from '@/lib/xray/inbound-defaults';
+
+export default function MtprotoFields() {
+  const { t } = useTranslation();
+  const form = Form.useFormInstance();
+  return (
+    <>
+      <Form.Item name={['settings', 'fakeTlsDomain']} label={t('pages.inbounds.form.fakeTlsDomain')}>
+        <Input
+          placeholder="www.cloudflare.com"
+          onChange={(e) => {
+            const current = (form.getFieldValue(['settings', 'secret']) as string) ?? '';
+            form.setFieldValue(['settings', 'secret'], mtprotoSecretForDomain(current, e.target.value));
+          }}
+        />
+      </Form.Item>
+      <Form.Item label={t('pages.inbounds.form.mtprotoSecret')}>
+        <Space.Compact block>
+          <Form.Item name={['settings', 'secret']} noStyle>
+            <Input readOnly style={{ width: 'calc(100% - 32px)' }} />
+          </Form.Item>
+          <Button
+            icon={<ReloadOutlined />}
+            onClick={() => {
+              const domain = form.getFieldValue(['settings', 'fakeTlsDomain']);
+              form.setFieldValue(['settings', 'secret'], generateMtprotoSecret(domain as string));
+            }}
+          />
+        </Space.Compact>
+      </Form.Item>
+      <Form.Item wrapperCol={{ span: 24 }}>
+        <Alert type="info" showIcon message={t('pages.inbounds.form.mtprotoHint')} />
+      </Form.Item>
+    </>
+  );
+}

frontend/src/pages/inbounds/info/InboundInfoModal.tsx

@@ -625,6 +625,35 @@ export default function InboundInfoModal({
         </dl>
       )}
 
+      {inbound.protocol === Protocols.MTPROTO && inbound.settings && (
+        <dl className="info-list info-list-block">
+          <div className="info-row">
+            <dt>{t('pages.inbounds.form.fakeTlsDomain')}</dt>
+            <dd><Tag color="green" className="value-tag">{inbound.settings.fakeTlsDomain as string}</Tag></dd>
+          </div>
+          <div className="info-row">
+            <dt>{t('pages.inbounds.form.mtprotoSecret')}</dt>
+            <dd className="value-block">
+              <code className="value-code">{inbound.settings.secret as string}</code>
+              <Tooltip title={t('copy')}>
+                <Button size="small" className="value-copy" icon={<CopyOutlined />} onClick={() => copyText(inbound.settings.secret as string, t)} />
+              </Tooltip>
+            </dd>
+          </div>
+          {links.length > 0 && (
+            <div className="info-row">
+              <dt>{t('pages.inbounds.copyLink')}</dt>
+              <dd className="value-block">
+                <code className="value-code">{links[0].link}</code>
+                <Tooltip title={t('copy')}>
+                  <Button size="small" className="value-copy" icon={<CopyOutlined />} onClick={() => copyText(links[0].link, t)} />
+                </Tooltip>
+              </dd>
+            </div>
+          )}
+        </dl>
+      )}
+
       {dbInbound.isMixed && inbound.settings && (
         <dl className="info-list info-list-block">
           <div className="info-row">