feat(message-gateway): add admin channel cards and per-type forms

frontend/messages/en.json

@@ -21,6 +21,7 @@
       "storage": "Storage",
       "database": "Database",
       "push": "Notifications",
+      "messageGateway": "Messaging",
       "logs": "System Logs",
       "system": "System Config",
       "adminSettings": "System Settings",
@@ -1021,6 +1022,45 @@
         "close": "Close"
       }
     },
+    "messageGateway": {
+      "pageTitle": "Messaging channels",
+      "pageDescription": "Configure instance-level Telegram and QQ bots. Users bind their private-chat identity with a pairing code.",
+      "addChannel": "Add channel",
+      "emptyTitle": "No messaging channels yet",
+      "emptyDescription": "Add a shared bot so users can bind it on their profile and send private messages.",
+      "enabled": "Enabled",
+      "disabled": "Disabled",
+      "delete": "Delete",
+      "deleteConfirmTitle": "Delete this channel?",
+      "deleteConfirmDescription": "Bindings and unused pairing codes for this channel will also be removed. This cannot be undone.",
+      "createSuccess": "Channel created",
+      "createFailed": "Failed to create channel",
+      "updateSuccess": "Channel updated",
+      "updateFailed": "Failed to update channel",
+      "deleteSuccess": "Channel deleted",
+      "deleteFailed": "Failed to delete channel",
+      "testSuccess": "Connectivity test passed",
+      "testFailed": "Connectivity test failed",
+      "name": "Name",
+      "namePlaceholder": "e.g. Ops bot",
+      "type": "Type",
+      "typeTelegram": "Telegram",
+      "typeQQ": "QQ",
+      "selectType": "Select a channel type",
+      "botToken": "Bot token",
+      "botTokenPlaceholder": "From BotFather",
+      "baseUrl": "API base URL",
+      "baseUrlPlaceholder": "https://api.telegram.org",
+      "appId": "App ID",
+      "appSecret": "App Secret",
+      "portalHost": "Portal host",
+      "portalHostPlaceholder": "q.qq.com",
+      "keepSecretHint": "Leave blank to keep the saved secret",
+      "cancel": "Cancel",
+      "create": "Create",
+      "testConnection": "Test connection",
+      "loadFailed": "Failed to load channels"
+    },
     "database": {
       "pageTitle": "Database",
       "refreshData": "Refresh data",