###### Is the BLoC pattern implemented properly? Can you see the `BlocObserver`, `BlocProvider`, and `BlocBuilder` being used explicitly in the code?
###### Are the `increment` and `decrement` operations implemented using the BLoC pattern, with the `CounterBloc` class managing the state of the counter?
###### Is the `increment` operation implemented using the BLoC pattern, with the `CounterBloc` class managing the state of the counter?
###### Does the app properly display the current value of the counter, and does it update automatically when the counter's value changes?