At some point, I'd love to know what I need to poke to gun SWD - but that's not an urgent priority. I'll make a github issue in the docs for it so it doesn't get forgotten.
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yes, if you want to. However the SWD pins may require some poking as by default they'll be in SWD mode.
There's GND + VCC on the SWD pads too - potentially there could be some tiny little shim that solders on with something on it :)