Draft: Reduce useless call of decode

[d8corp]

I'm not convinced this is the best approach, but it might have merit. We could refine it further.

Issues I see:

• Creating a Promise for each persistent atom feels heavy.
• It increases bundle size.

Benefits:

• Reduces unnecessary decode calls, which should improve performance if decode is time-intensive.

[d8corp]

I've added PR #1 to compare the differences with PR #66.

[ai]

I think we should ignore 1 extra call here. All fixes look more dangerous and complicated.

[d8corp]

@ai, I've improved the solution. Now we keep the string storage value and only call decode when it actually changes.