the kolship is leaving the shipyard and all that abilitys are already available for autouse or something.
I dont need to edit the capship files for this?
No, you don't. Not for that, but you did say you wanted to increase the production costs, in which case, you would have to change the capital ship's entity file, specifically this section:
You need to change those to make them cost more, take more time to build, and use up more fleet supply.
Additionally, if you really want to take the time and make the cap ship abilities like the Frigates, you can use the research without base source type, create research items for the abilities, plug them into the trees in appropriate spots, and force yourself to at least research them first before ships can use them, and you still get your upgrades by doing further research to that ability.