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Cyclium is a framework for building and orchestrating long-running, stateful processes ("actors") in Elixir.

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cyclium lib cyclium migrations v23.ex
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lib/cyclium/migrations/v23.ex 

defmodule Cyclium.Migrations.V23 do

  @moduledoc """

  V23: Record which interactive expectation a conversation uses.



  Adds a nullable `expectation_id` column to `cyclium_conversations`. When an

  actor declares more than one interactive expectation, a conversation can pin

  the one it belongs to, so dispatch routes each turn to the right expectation

  without the caller passing it every time. `NULL` means "auto-resolve" (the

  single interactive expectation), preserving existing behaviour for legacy rows.

  """



  use Ecto.Migration



  def up do

    alter table(:cyclium_conversations) do

      add(:expectation_id, :string)

    end

  end



  def down do

    alter table(:cyclium_conversations) do

      remove(:expectation_id)

    end

  end

end