// ─── Realtime no-op shim (appended to local-api.ts at image build) ───
//
// The local Flask API has no websocket/realtime layer -- upstream's LOCAL_MODE.md
// says so outright ("Realtime subscriptions -- NOT migrated"), but the adapter it
// ships still lacks `.channel()`, so every component that opens a subscription
// (useSubscription, useCurrentEvent, social, realm multiplayer) throws
// "TypeError: supabase.channel is not a function" and trips the ErrorBoundary --
// the whole app renders "Something went wrong".
//
// These stubs satisfy the call shape and do nothing. Reads still work: the app
// fetches through the normal query path. What is lost is live push updates, which
// are meaningless on a single-user instance with no other clients to sync from.
Object.assign(supabase as any, {
  channel: (_name?: string, _opts?: any) => {
    const ch: any = {
      on: () => ch,                                  // chainable, never fires
      subscribe: (cb?: (status: string) => void) => { cb?.('SUBSCRIBED'); return ch; },
      unsubscribe: async () => 'ok',
      presenceState: () => ({}),                     // realm multiplayer: nobody else here
      track: async () => 'ok',
      untrack: async () => 'ok',
      send: async () => 'ok',
    };
    return ch;
  },
  removeChannel: async () => 'ok',
  removeAllChannels: async () => 'ok',
  getChannels: () => [],
});