I can't find a description in the rules and I assume there's a really obvious UI element that shows you're about to overheat but I can't seem to find it - can someone point me in the direction that signposts this key feature of gameplay?

It doesn't seem overly useful?

Current version: 1.1 Important changes in 1.0.3: - Flux Defluxer was nerfed, and now costs more shield capacity to deal damage and the other option gives less shield capacity - The old Temple Ruins event is now back. It was previously removed because a new temple event was coming soon, but until then, the old one is back on the table. The new redesigned temple ruins event will probably only come in the 1.1 content patch - A new random event: A friendly Aylon ship is giving you free cards! - Other existin...

I've now had three boss fights, and after beating two of them the game has frozen on the combat screen after their ship explodes. Just freezes, I can't even quit to main menu despite the "esc" button being able to load the in combat menu. Not other hotkeys do anything. And in the end, don't unlock the next ship. Very frustrating to do everything and then, wham, no victory despite winning....

instructions unclear. Do things need to be done in a specific order? (Cause I don't see any of that mentioned in the ingame help)