I have an industrial outpost in orbit around a landable planet and on that planet have an industrial planetary port. It had nothing for sale before the tick and I don't think it has anything now (I've wandered off again!).
There does seem to be a bug where some planetary ports don't have any production at all (or this may be a temporary situation due to unfavourable BGS states)
There is also a bug-or-feature where planetary ports only have 3 commodities for export even when the above doesn't apply.
Question . Should I install an extraction or refinery or both on the same planet? System is Alrai Sector IM-V b2-4
This depends what you want to achieve, but I'd generally say not to at this stage [1].
If you add either of those, you'll move your ports from Industrial to Industrial/Extraction or Industrial/Refinery production. This is going to reduce their volume of industrial exports (because some will go to be consumed by the other half) and they also won't produce as much ore or metal as a standard port would because the Industrial side will consume some of it.
In general it's probably better to pick a separate planet (if one is available!) to build up your extraction or refinery output. An outpost or planetary port with a "Colony" basic economy type can be safely used for this as the extraction or refinery building will then
replace the Colony economy rather than adding to it.
[1] With, as always, the caveat that Frontier appear to be considering changes to how economic influence works which could make
any current construction work more or less favourably for particular purposes or designs, so if you're not happy with that risk, waiting until the end of Beta before building further is probably advisable.