The cars been driving really well all month.

My start up is this: courtesy light tells me there's
electricity, pump pedal once, turn key, see the gas gauge move, and the car starts.

Yesterday, it drove no issue. Returning, the courtesy light and gas gauge did their thing, but when I turned the key for ignition, everything died. No power to anything, courtesy light, too.
I've had issue with the battery so I checked that. It was at 12.4, so I boosted it and it went to 13.2 no problem. However, it didn't help. The courtesy light never came on. I checked the number 9 fuse "I" and it was burnt. Easy swap. But, that doesn't explain the lack of power. Or does it?
When I turn the key, there is a slight charge that moves the fuel gauge needle for a millisecond, but then, nothing.

Any help or direction is appreciated!