No damage type - so no mines with different type of warhead
No "mines" at all planned at the moment.
that can disable ship weapons and engines
We don't have plans to deal with single ship subsystems during battles. It's a galactic / system scale empire / battle, so indivual ship subsystems is too detailed to worry about simulating or players' focusing attention on.
then I assume no capture ship
Not in v0.4, although we might have some mechanism for boarding parties or ship capturing later.
and no repair ship to get that wrack to near space dock and de-construct for technology?
Not in v0.4, although there should be some mechanism for repairing one's own ships. There may also be leaders or spies or similar "great beings" that might be involved in capturing enemy ships, in or out of battle, however. These aspects of the game haven't been designed yet. v0.4 is just going to be basic combat.