Add global command channel rules and enhance command handling

- Introduced global command channel whitelist and blacklist in the GuildSettings model for improved command access control.
- Implemented command gate logic in the command routing to handle channel and role restrictions, providing user feedback for denied commands.
- Enhanced the CommandsManager component to support global rules and channel/role selection, improving the user interface for managing command permissions.
- Updated localization files to include new keys for global command rules and related messages, ensuring clarity in user interactions.

apps/webui/src/messages/en.json

@@ -18,7 +18,9 @@
     "back": "Back",
     "comingSoon": "Coming soon",
     "close": "Close",
-    "optional": "Optional"
+    "optional": "Optional",
+    "searchSelect": "Search and select…",
+    "noResults": "No results"
   },
   "nav": {
     "dashboard": "Dashboard",
@@ -584,12 +586,20 @@
       "searchPlaceholder": "Search commands…",
       "empty": "No commands match your search.",
       "cooldownSeconds": "Cooldown (seconds)",
-      "allowedRoleIds": "Allowed role IDs",
-      "deniedRoleIds": "Denied role IDs",
-      "allowedChannelIds": "Allowed channel IDs",
-      "deniedChannelIds": "Denied channel IDs",
+      "allowedRoleIds": "Allowed roles",
+      "deniedRoleIds": "Denied roles",
+      "allowedChannelIds": "Allowed channels",
+      "deniedChannelIds": "Denied channels",
       "idsPlaceholder": "One or more IDs, comma-separated",
-      "reset": "Reset to default"
+      "reset": "Reset to default",
+      "globalTitle": "Global command rules",
+      "globalDescription": "Channel whitelist and blacklist for all slash commands on this server. Empty whitelist = all channels (except blacklist). Per-command rules apply on top.",
+      "globalAllowedChannels": "Whitelist channels",
+      "globalDeniedChannels": "Blacklist channels",
+      "globalAllowedHint": "When set, commands can only be used in these channels.",
+      "globalDeniedHint": "Commands are always blocked in these channels.",
+      "channelSearchPlaceholder": "Search channels…",
+      "roleSearchPlaceholder": "Search roles…"
     }
   },
   "userMenu": {