fix: show canvas enhance processing placeholder

components/canvas/nodes/ImageNode.tsx

@@ -6607,7 +6607,9 @@ export function ImageNode({
       return;
     }
 
-    setIsCreatingDetachedResultNode(true);
+    // The server creates the result node after completion. Keep the source-node
+    // processing overlay visible while that detached result is pending.
+    setIsCreatingDetachedResultNode(false);
     setIsProcessing(true);
     try {
       const command = createCanvasCapabilityClientCommand({

tests/routes/canvas-runtime-internal-endpoint.test.ts

@@ -1,4 +1,6 @@
 import { expect, test } from "@playwright/test";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
 
 import { resolveCanvasRuntimeEndpoint } from "@/lib/canvas/capabilities/internal-endpoint";
 import {
@@ -7,6 +9,25 @@ import {
 } from "@/lib/canvas/capabilities/task-queue";
 
 test.describe("canvas runtime internal endpoints", () => {
+  test("keeps the image processing placeholder visible for shared toolbar actions", () => {
+    const source = readFileSync(
+      resolve(process.cwd(), "components/canvas/nodes/ImageNode.tsx"),
+      "utf8"
+    );
+    const start = source.indexOf("const executeSharedToolbarCapability = async");
+    const end = source.indexOf("// 处理图片编辑操作", start);
+
+    expect(start).toBeGreaterThanOrEqual(0);
+    expect(end).toBeGreaterThan(start);
+    const sharedCapabilityFlow = source.slice(start, end);
+    expect(sharedCapabilityFlow).toContain(
+      "setIsCreatingDetachedResultNode(false);"
+    );
+    expect(sharedCapabilityFlow).not.toContain(
+      "setIsCreatingDetachedResultNode(true);"
+    );
+  });
+
   test("uses the local HTTP listener for server-internal capability calls", () => {
     expect(
       resolveCanvasRuntimeEndpoint(