fix: clarify text edit requires actual changes

components/agents/AgentImageTextEditDialog.tsx

@@ -204,6 +204,20 @@ export function AgentImageTextEditDialog({
     });
   }, []);
 
+  const hasTextEditChanges = useMemo(
+    () =>
+      textEditItems.some((item) => {
+        const originalText = item.originalText.trim();
+        const editedText = item.editedText.trim();
+        return (
+          originalText.length > 0 &&
+          (editedText.length === 0 || editedText !== originalText)
+        );
+      }) ||
+      deletedTextItems.some((item) => item.originalText.trim().length > 0),
+    [deletedTextItems, textEditItems]
+  );
+
   const handleGenerateSuggestions = useCallback(
     async (item: AgentImageTextEditItem) => {
       if (!normalizedImageUrl) {
@@ -324,7 +338,7 @@ export function AgentImageTextEditDialog({
 
     const requestItems = [...changedItems, ...removedItems];
     if (requestItems.length === 0) {
-      toast.info("请先修改或删除至少一段文字");
+      toast.info("请先把要替换的文字改成新文案，或点击垃圾桶删除该文字");
       return;
     }
 
@@ -548,7 +562,7 @@ export function AgentImageTextEditDialog({
               disabled={
                 isDetectingText ||
                 isApplyingTextEdit ||
-                (textEditItems.length === 0 && deletedTextItems.length === 0)
+                !hasTextEditChanges
               }
               onClick={() => void handleApplyTextEdit()}
             >
@@ -557,7 +571,7 @@ export function AgentImageTextEditDialog({
               ) : (
                 <Type className="mr-2 h-4 w-4" />
               )}
-              确定生图
+              {hasTextEditChanges ? "确定生图" : "先修改文字"}
             </Button>
           </div>
         </div>

components/canvas/nodes/ImageNode.tsx

@@ -4878,6 +4878,20 @@ export function ImageNode({
     });
   };
 
+  const hasTextEditChanges = useMemo(
+    () =>
+      textEditItems.some((item) => {
+        const originalText = item.originalText.trim();
+        const editedText = item.editedText.trim();
+        return (
+          originalText.length > 0 &&
+          (editedText.length === 0 || editedText !== originalText)
+        );
+      }) ||
+      deletedTextItems.some((item) => item.originalText.trim().length > 0),
+    [deletedTextItems, textEditItems]
+  );
+
   const handleApplyTextEdit = useCallback(async () => {
     if (!data.src) {
       toast.error("请先上传图片");
@@ -4921,7 +4935,7 @@ export function ImageNode({
     const requestItems = [...changedItems, ...removedItems];
 
     if (requestItems.length === 0) {
-      toast.info("请先修改或删除至少一段文字");
+      toast.info("请先把要替换的文字改成新文案，或点击垃圾桶删除该文字");
       return;
     }
 
@@ -9369,7 +9383,7 @@ export function ImageNode({
                 disabled={
                   isDetectingText ||
                   isApplyingTextEdit ||
-                  (textEditItems.length === 0 && deletedTextItems.length === 0)
+                  !hasTextEditChanges
                 }
                 onClick={handleApplyTextEdit}
                 size="sm"
@@ -9379,7 +9393,7 @@ export function ImageNode({
                 ) : (
                   <Check className="mr-1 h-3.5 w-3.5" />
                 )}
-                确认替换
+                {hasTextEditChanges ? "确认替换" : "先修改文字"}
               </Button>
             </div>
           </div>,