[UI Enhancement] Phased Out Visual Indicator

I know technically "phase" means remove from the game but in reality, even in IRL, you don't take the card off the table and hide it. Suggest making some sort of visual identifier instead of actually removing from the board, i.e. "fade" it out and say "phased out" on hover over, a "phased out" icon/counter, something. It gets confusing when you have dozens of phased objects all in different phase states (in and out) trying to remember what you, or your opponent, has on the board in reality.

The issue names no files, tests, or entry points. Start by locating the client UI handling phased game objects and determine how phase state is represented; the work is done when phased objects have a clear, persistent visual distinction that remains understandable across different phase states.

Written by the indexing model from the issue text.