feat(settings): panel network proxy for the panel's own outbound requests

Add a panelProxy setting that routes the panel's self-initiated HTTP requests (geo updates, Xray version/core download, panel update check) through an admin-configured socks5/http(s) proxy, to bypass server-side filtering of GitHub/Telegram. The Telegram bot falls back to it when tgBotProxy is empty (socks5 only). New util/netproxy.NewHTTPClient builds the proxied client.

Also fix the Mixed-inbound SOCKS/HTTP share URLs that had host:port and user:pass in the wrong order, and consolidate the Telegram settings tab (move API server into the general tab, drop the empty Proxy & Server tab).

frontend/src/models/setting.ts

@@ -9,6 +9,7 @@ export class AllSetting {
   webBasePath = '/';
   sessionMaxAge = 360;
   trustedProxyCIDRs = '127.0.0.1/32,::1/128';
+  panelProxy = '';
   pageSize = 25;
   expireDiff = 0;
   trafficDiff = 0;

frontend/src/pages/inbounds/InboundInfoModal.tsx

@@ -911,11 +911,11 @@ export default function InboundInfoModal({
                       <Button size="small" type="text" icon={<CopyOutlined />} onClick={() => copyText(`${account.user}:${account.pass}`, t)} />
                     </Tooltip>
                     <Space size={4} wrap className="share-buttons">
-                      <Tooltip title={`socks5://${dbInbound.address}:${dbInbound.port}@${account.user}:${account.pass}`}>
-                        <Button size="small" onClick={() => copyText(`socks5://${dbInbound.address}:${dbInbound.port}@${account.user}:${account.pass}`, t)}>SOCKS5</Button>
+                      <Tooltip title={`socks5://${account.user}:${account.pass}@${dbInbound.address}:${dbInbound.port}`}>
+                        <Button size="small" onClick={() => copyText(`socks5://${account.user}:${account.pass}@${dbInbound.address}:${dbInbound.port}`, t)}>SOCKS5</Button>
                       </Tooltip>
-                      <Tooltip title={`http://${dbInbound.address}:${dbInbound.port}@${account.user}:${account.pass}`}>
-                        <Button size="small" onClick={() => copyText(`http://${dbInbound.address}:${dbInbound.port}@${account.user}:${account.pass}`, t)}>HTTP</Button>
+                      <Tooltip title={`http://${account.user}:${account.pass}@${dbInbound.address}:${dbInbound.port}`}>
+                        <Button size="small" onClick={() => copyText(`http://${account.user}:${account.pass}@${dbInbound.address}:${dbInbound.port}`, t)}>HTTP</Button>
                       </Tooltip>
                       <Tooltip title="https://t.me/socks?server=...&port=...&user=...&pass=...">
                         <Button size="small" onClick={() => copyText(`https://t.me/socks?server=${encodeURIComponent(dbInbound.address)}&port=${dbInbound.port}&user=${encodeURIComponent(account.user)}&pass=${encodeURIComponent(account.pass)}`, t)}>Telegram</Button>

frontend/src/pages/settings/GeneralTab.tsx

@@ -170,6 +170,14 @@ export default function GeneralTab({ allSetting, updateSetting }: GeneralTabProp
               />
             </SettingListItem>
 
+            <SettingListItem paddings="small" title={t('pages.settings.panelProxy')} description={t('pages.settings.panelProxyDesc')}>
+              <Input
+                value={allSetting.panelProxy}
+                placeholder="socks5:// or http://user:pass@host:port"
+                onChange={(e) => updateSetting({ panelProxy: e.target.value })}
+              />
+            </SettingListItem>
+
             <SettingListItem paddings="small" title={t('pages.settings.pageSize')} description={t('pages.settings.pageSizeDesc')}>
               <InputNumber value={allSetting.pageSize} min={0} step={5} style={{ width: '100%' }}
                 onChange={(v) => updateSetting({ pageSize: Number(v) || 0 })} />

frontend/src/pages/settings/TelegramTab.tsx

@@ -61,6 +61,11 @@ export default function TelegramTab({ allSetting, updateSetting }: TelegramTabPr
                 options={langOptions}
               />
             </SettingListItem>
+
+            <SettingListItem paddings="small" title={t('pages.settings.telegramAPIServer')} description={t('pages.settings.telegramAPIServerDesc')}>
+              <Input value={allSetting.tgBotAPIServer} placeholder="https://api.example.com"
+                onChange={(e) => updateSetting({ tgBotAPIServer: e.target.value })} />
+            </SettingListItem>
           </>
         ),
       },
@@ -85,22 +90,6 @@ export default function TelegramTab({ allSetting, updateSetting }: TelegramTabPr
           </>
         ),
       },
-      {
-        key: '3',
-        label: t('pages.settings.proxyAndServer'),
-        children: (
-          <>
-            <SettingListItem paddings="small" title={t('pages.settings.telegramProxy')} description={t('pages.settings.telegramProxyDesc')}>
-              <Input value={allSetting.tgBotProxy} placeholder="socks5://user:pass@host:port"
-                onChange={(e) => updateSetting({ tgBotProxy: e.target.value })} />
-            </SettingListItem>
-            <SettingListItem paddings="small" title={t('pages.settings.telegramAPIServer')} description={t('pages.settings.telegramAPIServerDesc')}>
-              <Input value={allSetting.tgBotAPIServer} placeholder="https://api.example.com"
-                onChange={(e) => updateSetting({ tgBotAPIServer: e.target.value })} />
-            </SettingListItem>
-          </>
-        ),
-      },
     ]} />
   );
 }

frontend/src/schemas/setting.ts

@@ -13,6 +13,7 @@ export const AllSettingSchema = z.object({
   webBasePath: absolutePath.optional(),
   sessionMaxAge: z.number().int().min(1).optional(),
   trustedProxyCIDRs: z.string().optional(),
+  panelProxy: z.string().optional(),
   pageSize: z.number().int().min(1).max(1000).optional(),
   expireDiff: nonNegativeInt.optional(),
   trafficDiff: nonNegativeInt.optional(),