Direstar issue - limit condensed groups to X heat

The DireStar has 11 ER PPCs; condensing them into a single unit makes the heat high enough the unit will not fire. Ideally the logic is that they only fire one or two PPCs as they close, until they hit a high hit % and go 'lol, heat' and fire them all.

Start by locating the C# logic that condenses DireStar weapons into groups and applies heat limits. Trace how PPC firing is chosen as the unit closes and define the threshold for switching from one or two PPCs to the full group. Done means the DireStar avoids unusable heat at lower hit chances while firing all PPCs when its hit chance is high.

Written by the indexing model from the issue text.