Function update

examples/react-native/shopping-list/src/utils/api.ts:57–71

(
    id: string,
    data: { name?: string },
  )

  },

  async update(
    id: string,
    data: { name?: string },
  ): Promise<ApiTxResult<{ list: ShoppingList }> | null> {
    const response = await offlineAwareFetch(`${API_URL}/api/lists/${id}`, {
      method: 'PUT',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(data),
    })
    if (response.status === 404) return null
    if (!response.ok) {
      throw new Error(`Failed to update list: ${response.status}`)
    }
    return response.json()
  },

  async delete(id: string): Promise<ApiTxResult<{ success: boolean }> | null> {
    const response = await offlineAwareFetch(`${API_URL}/api/lists/${id}`, {