It is technically an offshoot of telekinesis, yes.
There's not 'five types of power that psykers can manifest', its more that there's five greater fields that the Imperium roughly divides skillsets into.
Guess this involves using lots of bones.
Not always. They can also involve psi-active components and materials. Minerals, gemstones.
Good to know and would pre-existing items be psy-modified if they were involved with a notable act. Like say a sword that cut down a thousand heretics in one battle.
Considering how most Technomancy powers revolve around interfering with a machine's ability to function and forcefully jamming guns, I'd bet on 'apoplectic rage'.
I think it depends on part of Mechanicus and how radical or conversation they are about psyker abilities.
And how respectful the psyker is about it as well.
In regards to this, i present to you the Discordant, an elite package (career advancement) in the Dark Heresy: the Lathe Worlds supplement. This character can harm any techno stuff like the machine spirits of complicated creation like Knights as easy to kill while having a harder time of attacking ubiquitous stuff like a datapad.
Can be done, yup!
Unhappy grumbling so long its done respectfully. Some approving of it. Some tech priests may or may not be very low graded Psykers irt their ability to manifest machine godly feats and the like.
