Flutter context.watch Instead of Top Builder

Goal

Replace a top-level BlocBuilder<Cubit, State> with context.watch<Cubit>() in build, while keeping the same UI behavior.

Workflow

1. Identify a root BlocBuilder wrapping most of the screen.
2. Inside build, read the cubit once:
   • final cubit = context.watch<MyCubit>();
   • final state = cubit.state;
3. Remove the outer BlocBuilder and return the wrapped widget directly.
4. Keep write actions as context.read<MyCubit>() in handlers (onTap, submit, etc.).
5. If presentation stream listeners exist (for useOnStreamChange), use cubit.presentation so there is a single watched cubit reference.
6. Validate no behavior changes: loading, list size, buttons, and side effects should match previous logic.

Guardrails