feat(web): choose where the search sits, and controls no longer select text

- settings get a search position (left, center by default, right); the top bar
  is three zones and the suggestions open towards the free space
- buttons, chips, tabs, menu items and the home screen controls are not
  text-selectable, so clicks and double clicks no longer highlight labels

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

api/openapi.yaml

@@ -2014,6 +2014,10 @@ components:
         web_player:
           type: string
           enum: [bar, island]
+        search_position:
+          type: string
+          enum: [center, left, right]
+          description: Где в топбаре веба поиск (по умолчанию center)
         mobile_player:
           type: string
           enum: [cover, wave]