1 files changed, 14 insertions, 3 deletions

diff --git a/scripts/theme-studio/theme-studio.html b/scripts/theme-studio/theme-studio.html
index 8674efc0..b980f800 100644
--- a/scripts/theme-studio/theme-studio.html
+++ b/scripts/theme-studio/theme-studio.html
@@ -1103,14 +1103,15 @@ function updateColor(){
   const newHex=curHex();
   const newName=(document.getElementById('newname').value.trim())||PALETTE[i][1];
   if(PALETTE.some((p,j)=>j!==i&&p[1].toLowerCase()===newName.toLowerCase())){notify('another color is already named "'+newName+'" — names must be unique',true);return;}
+  const isGroundEdit=oldRole==='bg'||oldRole==='fg';
   // If the edited color is a column base with a ramp, recolor the whole column: regenerate from the new base at the same count.
   const columns=columnsFromPalette(PALETTE,{bg:MAP['bg'],fg:MAP['p']}).columns;
-  const column=columns.find(f=>f.base.toLowerCase()===oldHex.toLowerCase());
+  const column=isGroundEdit?null:columns.find(f=>f.base.toLowerCase()===oldHex.toLowerCase());
   const count=column?Math.max(0,...rankByLightness(column.members.map(m=>m.hex),column.base).map(m=>Math.abs(m.offset))):0;
-  const columnId=PALETTE[i][2]||columnStem(PALETTE[i][1]);
+  const columnId=isGroundEdit?'ground':(PALETTE[i][2]||columnStem(PALETTE[i][1]));
   PALETTE[i]=[newHex,newName,columnId];
   const duplicateOldHex=PALETTE.some((p,j)=>j!==i&&p[0].toLowerCase()===oldHex.toLowerCase());
-  if(oldRole==='bg'||oldRole==='fg')repointHex(oldHex,newHex);
+  if(isGroundEdit)repointHex(oldHex,newHex);
   else if(!duplicateOldHex&&oldHex!==MAP['bg']&&oldHex!==MAP['p'])repointHex(oldHex,newHex);
   if(column&&count>0){
     const oldHexes=column.members.map(m=>m.hex.toLowerCase()===oldHex.toLowerCase()?newHex:m.hex);
@@ -2194,6 +2195,16 @@ if(location.hash==='#baseedittest'){let ok=true;const notes=[];const A=(c,n)=>{i
  document.getElementById('newhexstr').value='#101010';document.getElementById('newname').value='ground';
  updateColor();
  A(MAP['bg'].toLowerCase()==='#101010','editing the bg swatch wrote the bg assignment, got '+MAP['bg']);
+ // fg edit: even when a normal column shares the old fg hex, editing fg must not regenerate that column as fg-*.
+ MAP['bg']='#0d0b0a';MAP['p']='#e0e0e0';
+ PALETTE=[['#0d0b0a','bg','ground'],['#e0e0e0','fg','ground'],['#c0c0c0','silver-1','silver'],['#e0e0e0','silver','silver'],['#f4f4f4','silver+1','silver']];
+ selectedIdx=PALETTE.findIndex(p=>p[1]==='fg');
+ document.getElementById('newhexstr').value='#d8d8d8';document.getElementById('newname').value='fg';
+ updateColor();
+ A(MAP['p'].toLowerCase()==='#d8d8d8','editing the fg swatch wrote the fg assignment, got '+MAP['p']);
+ A(PALETTE.some(p=>p[1]==='silver'&&p[2]==='silver'),'editing fg does not rename a same-hex normal column base');
+ A(!PALETTE.some(p=>/^fg[+-]\d+$/.test(p[1])),'editing fg does not generate fg span tiles from a same-hex normal column');
+ A(PALETTE.find(p=>p[1]==='fg')[2]==='ground','editing fg preserves the ground column id');
  PALETTE=saveP;for(const k in MAP)delete MAP[k];Object.assign(MAP,saveM);for(const f in UIMAP)delete UIMAP[f];Object.assign(UIMAP,saveU);selectedIdx=saveSel;renderPalette();
  document.title='BASEEDITTEST '+(ok?'PASS':'FAIL');
  const d=document.createElement('div');d.id='baseedittest';d.textContent='BASEEDITTEST '+(ok?'PASS':'FAIL')+(notes.length?' | '+notes.join(' ; '):'');document.body.appendChild(d);}