fix: prevent duplicate uploads and group asset commits

components/upload/ActionButtons.tsx

@@ -1,5 +1,6 @@
 interface ActionButtonsProps {
   isUploading: boolean
+  isChecking: boolean
   isSecretEmpty: boolean
   hasPendingOrErrors: boolean
   allDone: boolean
@@ -11,6 +12,7 @@ interface ActionButtonsProps {
 
 export default function ActionButtons({
   isUploading,
+  isChecking,
   isSecretEmpty,
   hasPendingOrErrors,
   allDone,
@@ -19,11 +21,12 @@ export default function ActionButtons({
   onCancel,
   onReset,
 }: ActionButtonsProps) {
-  const cantUpload = isSecretEmpty
+  const cantUpload = isSecretEmpty || isChecking
+  const isBusy = isUploading || isChecking
 
   return (
     <div className="flex gap-3">
-      {!isUploading && hasPendingOrErrors && (
+      {!isBusy && hasPendingOrErrors && (
         <button
           onClick={onUpload}
           disabled={cantUpload}
@@ -38,18 +41,19 @@ export default function ActionButtons({
         </button>
       )}
 
-      {isUploading && (
-        <button
-          onClick={onCancel}
-          className="flex-1 bg-black-700 text-gray-300 font-medium text-sm
-                     py-2.5 px-6 rounded-xl border border-black-600 transition-colors duration-150
+       {isBusy && (
+         <button
+           onClick={onCancel}
+           disabled={!isUploading}
+           className="flex-1 bg-black-700 text-gray-300 font-medium text-sm
+                     py-2.5 px-6 rounded-xl border border-black-600 transition-colors duration-150 disabled:opacity-50 disabled:cursor-not-allowed
                      hover:bg-black-600"
-        >
-          Annuler
-        </button>
-      )}
+         >
+           {isChecking ? 'Verification...' : 'Annuler'}
+         </button>
+       )}
 
-      {(allDone || hasErrors) && !isUploading && (
+      {(allDone || hasErrors) && !isBusy && (
         <button
           onClick={onReset}
           className="flex-1 bg-black-700 text-gray-300 font-medium text-sm