Once again, I found wikipedia lacking:
https://en.wikipedia.org/wiki/Techne
doesn't mean "art" (Latin translation which meant something different to them, closer to the Greek concept) or "craft" (at least not in the mundane sense of doing things manually, more like a "skill").
I think (quite forcefully, in the least amount of words) technê pertains to: "the functionally intersubjective aspects of productive knowledge".
In addition to the recommended book: "Productive Knowledge in Ancient Philosophy: The Concept of Technê", by Johansen, Thomas Kjeller; I would suggest: "Of Art and Wisdom" by David Roochnik (which I recommend not only as a necessary complementary reading to Johansen's, but I found much better at explaining the concept and its very interesting historical grounding from pre-Socratic times to Plato).
You will also need to understand well the mathematical concept of function, which has been cannibalized by all other scientific endeavors; not in the "post-modern" way in which it is explained on wikipedia:
https://en.wikipedia.org/wiki/Function_(mathematics)
but in the "Geometric" (which in those times didn't mean "visual" but more like -logical-) way Ancient Greeks understood the concept as they used it in the best corpus ever build:
https://en.wikipedia.org/wiki/Euclid%27s_Elements
all the way to Descartes.
When I have had to teach that concept to high school students I explained it "the old way":
https://ergosumus.wordpress.com/2021/11/09/nerds-gang-math-functions/
showing to my students how even month old ravens understand that concept without having to sit years in school ;-), also proving that our mind-body link is semiological (supervening on the negentropy brought about by our quite Saussurean neurons), not anatomical or physiological. As Kant explained to us, even when we dream, we dream "functionally".
Sorry for my latest mini rants. I decided to be more explicit about what I meant by technê, functions, ... because to my understanding it is not only more enlightening, but downright profitable when it comes to corpora research. I don't want for other people to be carried adrift as it happened to silly me with "tensors". I promise I won't say a word for the next five minutes or so ;-)
lbrtchx