feat(webui): add localized slash commands

Add a session-scoped slash command palette sourced from backend command metadata, and keep welcome-page quick actions localized across all WebUI languages.

Co-authored-by: Cursor <cursoragent@cursor.com>

nanobot/channels/websocket.py

@@ -32,6 +32,7 @@ from websockets.http11 import Response
 from nanobot.bus.events import OutboundMessage
 from nanobot.bus.queue import MessageBus
 from nanobot.channels.base import BaseChannel
+from nanobot.command.builtin import builtin_command_palette
 from nanobot.config.paths import get_media_dir
 from nanobot.config.schema import Base
 from nanobot.utils.helpers import safe_filename
@@ -553,6 +554,9 @@ class WebSocketChannel(BaseChannel):
         if got == "/api/settings":
             return self._handle_settings(request)
 
+        if got == "/api/commands":
+            return self._handle_commands(request)
+
         if got == "/api/settings/update":
             return self._handle_settings_update(request)
 
@@ -708,6 +712,11 @@ class WebSocketChannel(BaseChannel):
             return _http_error(401, "Unauthorized")
         return _http_json_response(self._settings_payload())
 
+    def _handle_commands(self, request: WsRequest) -> Response:
+        if not self._check_api_token(request):
+            return _http_error(401, "Unauthorized")
+        return _http_json_response({"commands": builtin_command_palette()})
+
     def _handle_settings_update(self, request: WsRequest) -> Response:
         if not self._check_api_token(request):
             return _http_error(401, "Unauthorized")