State operations that strategies handle to update agent state.

These are not directives - they never leave the strategy layer. They are separated from directives to maintain a clean boundary:

• State operations → modify agent state within the strategy
• Directives → external effects for the runtime to execute

Available State Operations

• SetState - Deep merge attributes into state
• ReplaceState - Replace state wholesale (no merge)
• DeleteKeys - Remove top-level keys from state
• SetPath - Set value at a nested path
• DeletePath - Delete value at a nested path

Usage

Actions can return state operations alongside directives:

alias Jido.Agent.{Directive, StateOp}

{:ok, result, [
  %StateOp.SetState{attrs: %{status: :processing}},
  %Directive.Emit{signal: my_signal}
]}

The strategy applies state operations to the agent and passes through directives to the runtime.