Fix game input handlers intercepting keystrokes in editor input fields

Two additional window-level keydown handlers were also capturing keys when
the pitch input (or any input/select/textarea) was focused:

1. The key remap handler (capture phase) was eating all keydown events
2. The game lane input handler was calling preventDefault() on keys like
   f, g, h, j, d, k, l, space — which are needed for typing pitch names

Both now skip when activeElement is an INPUT, TEXTAREA, or SELECT.

https://claude.ai/code/session_01TLvDyKzUQekd9hzFuEJ5YX

index.html

@@ -6497,6 +6497,8 @@ function showKeyRemapStep(){
 }
 var keyRemapCooldown=false;
 window.addEventListener("keydown",function(e){
+  var aeTag=document.activeElement&&document.activeElement.tagName;
+  if(aeTag==="INPUT"||aeTag==="TEXTAREA"||aeTag==="SELECT")return;
   if(keyRemapping){
     if(e.key==="Escape"){cancelKeyRemap();e.preventDefault();return;}
     if(keyRemapCooldown)return;
@@ -6512,6 +6514,8 @@ window.addEventListener("keydown",function(e){
 
 // ── INPUT ──────────────────────────────────────────────
 window.addEventListener("keydown",e=>{
+  var aeTag=document.activeElement&&document.activeElement.tagName;
+  if(aeTag==="INPUT"||aeTag==="TEXTAREA"||aeTag==="SELECT")return;
   if(keyRemapping)return;
   if(e.key==="Escape"){e.preventDefault();togglePause();return;}
   if(paused)return;