Migration 1.x to 3.x

3.x replaces the old specialized action classes with Container, Parallel, Direct, and Noop.

Common mappings:

• Direct.of("step", ctx -> {}) becomes Direct.builder("step").execute(ctx -> {}).build().
• Sequential becomes Container with ChildMode.INDEPENDENT and OrderMode.DECLARED.
• DependentSequential becomes the default Container policy.
• RandomSequential becomes Container.Policy with OrderMode.SHUFFLED and ChildMode.INDEPENDENT.
• DependentRandomSequential becomes Container with ChildMode.DEPENDENT and OrderMode.SHUFFLED.
• Lifecycle becomes Container.before(...).child(...).after(...).
• Parallel.of(...) becomes Parallel.builder(...).child(...).build().

Context sharing is now action-owned. Use Action.ContextMode.SHARED on actions that should use the parent context directly.