This was very interesting and well thought out. I thought of another attack vector: systems disruption - hacking, if you like. It has the advantage of working

This was very interesting and well thought out. I thought of another attack vector: systems disruption - hacking, if you like. It has the advantage of working at the speed of light (so being easy to aim), energy efficient, and relatively hard to defend against. At the crude end of the spectrum we have blanket 'denial' attacks: flooding the enemy ship with huge amounts of EM radiation aimed at knocking something important out. Idea here is that while lasers do much the same, they work simply by melting the hull. Using other frequencies may present the opportunity to selectively overload important systems, zap internal electronics, or disrupt sensitive and hard to shield components like targeting sensors. More refined approaches might involve penetrating shipboard networks using the enemy space navy's command & control infrastructure. There's no need to describe the arms race of exploits & countermeasures which would result.