Docs: reduce over-documentation across gameplay scripts

Trim restated narration, dead commented-out code, and oversized class
headers; keep all why-comments (authority, timing, edge cases), tooltips,
and serialization caveats.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Assets/Scripts/PlayerControlMode.cs

@@ -8,9 +8,6 @@ public class PlayerControlMode : GameMode
 
     public override void Enter()
     {
-        //if (Manager.Insect)
-        //    Manager.Insect.enabled = false;
-
         if (Manager.Player)
         {
             Manager.Player.enabled = true;