fix: allow deleting detail scale selections

components/agents/AgentGenerationWorkspaceDarkV2.tsx

@@ -1407,6 +1407,9 @@ function DetailResultLocalEditDialog({
   const dialogDescription = isScaleAdjustMode
     ? "比例模式：先框主体，再框目标大小和位置。"
     : "局部模式：框选要修改的位置，填写提示词，并可添加参考图。";
+  const activeScaleRegion = isScaleAdjustMode
+    ? regions.find((region) => region.id === activeRegionId) || null
+    : null;
 
   return (
     <Dialog open={Boolean(target)} onOpenChange={(open) => (!open ? onClose() : undefined)}>
@@ -1601,6 +1604,32 @@ function DetailResultLocalEditDialog({
 	                    </button>
 		                  );
 		                })}
+                {activeScaleRegion ? (
+                  <button
+                    aria-label={`删除区域 ${activeScaleRegion.index}`}
+                    className="absolute z-30 flex h-8 w-8 items-center justify-center rounded-full border border-white/50 bg-red-500 text-white shadow-[0_10px_24px_rgba(0,0,0,0.35)] transition hover:bg-red-400 disabled:cursor-not-allowed disabled:opacity-45"
+                    disabled={isBusy}
+                    onClick={(event) => {
+                      event.preventDefault();
+                      event.stopPropagation();
+                      removeRegion(activeScaleRegion.id);
+                    }}
+                    onPointerDown={(event) => {
+                      event.preventDefault();
+                      event.stopPropagation();
+                    }}
+                    style={{
+                      left: `calc(${
+                        (activeScaleRegion.rect.x + activeScaleRegion.rect.width) * 100
+                      }% - 34px)`,
+                      top: `calc(${activeScaleRegion.rect.y * 100}% + 8px)`,
+                    }}
+                    title="删除当前框选"
+                    type="button"
+                  >
+                    <X className="h-4 w-4" />
+                  </button>
+                ) : null}
                 {isScaleAdjustMode
                   ? regions
                       .filter((region) => region.targetRect)