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You would see some sort of patterns there, and we don't see such a thing.

Like the difference between a silicon microchip and just a silicon block. Same stuff, bit the microchip one has intricate patterns.

I get your point and I agree, the DNA runs on hardware, which is why you can't take cat DNA and put it in a salamander cell and expect to get a cat. The resulting cell will just die since the hardware is not compatible with the DNA.

My point was that there is only so much information capacity in the cell if you exclude DNA, surely much less than needed to store electrical fields patterns for a whole embryo.

Aren't those electrical field patterns still somehow encoded in the DNA?

At around 2:30 you can see some cells moving inside the embryo. What are they doing?