fix: prevent editor bubble menu update loop

apps/web/src/components/EditorPane.tsx

@@ -76,6 +76,7 @@ import {
 } from "@/components/ui/dialog";
 import { EditorToolbar } from "./EditorToolbar";
 import { EditorOutline } from "./EditorOutline";
+import { useAiBubbleMenu } from "./editor/useAiBubbleMenu";
 import { WeChatIcon } from "./WeChatIcon";
 import { ThemeToggle } from "./ThemeToggle";
 import { useTheme } from "./ThemeProvider";
@@ -703,6 +704,7 @@ const RichEditorPane = ({
   const [historyOpen, setHistoryOpen] = useState(false);
   const [shareOpen, setShareOpen] = useState(false);
   const [aiAssistantOpen, setAiAssistantOpen] = useState(false);
+  const aiBubbleMenu = useAiBubbleMenu(aiAssistantOpen);
   const [aiSelection, setAiSelection] = useState<AiSelectionContext | null>(null);
   const [systemInfoOpen, setSystemInfoOpen] = useState(false);
   const [updateAvailable, setUpdateAvailable] = useState(false);
@@ -4133,10 +4135,8 @@ const RichEditorPane = ({
               >
                 <BubbleMenu
                   editor={editor}
-                  shouldShow={({ editor: activeEditor }) =>
-                    activeEditor.isEditable && !activeEditor.state.selection.empty && !aiAssistantOpen
-                  }
-                  options={{ placement: "top" }}
+                  shouldShow={aiBubbleMenu.shouldShow}
+                  options={aiBubbleMenu.options}
                 >
                   <Button
                     type="button"

apps/web/src/components/editor/useAiBubbleMenu.ts

@@ -0,0 +1,22 @@
+import { useCallback } from "react";
+import type { BubbleMenuProps } from "@tiptap/react/menus";
+
+type BubbleMenuShouldShow = NonNullable<BubbleMenuProps["shouldShow"]>;
+type BubbleMenuOptions = NonNullable<BubbleMenuProps["options"]>;
+
+const AI_BUBBLE_MENU_OPTIONS: BubbleMenuOptions = { placement: "top" };
+
+export const useAiBubbleMenu = (assistantOpen: boolean) => {
+  // BubbleMenu dispatches an options-update transaction whenever these prop
+  // references change. Keep them stable so the editor's transaction-driven
+  // toolbar refresh cannot feed back into another BubbleMenu update.
+  const shouldShow = useCallback<BubbleMenuShouldShow>(
+    ({ editor }) => editor.isEditable && !editor.state.selection.empty && !assistantOpen,
+    [assistantOpen],
+  );
+
+  return {
+    options: AI_BUBBLE_MENU_OPTIONS,
+    shouldShow,
+  };
+};

apps/web/src/desktop-renderer-test.tsx

@@ -1,6 +1,10 @@
-import React from "react";
+import React, { useEffect, useState } from "react";
 import { createRoot } from "react-dom/client";
+import { EditorContent, useEditor } from "@tiptap/react";
+import { BubbleMenu } from "@tiptap/react/menus";
+import StarterKit from "@tiptap/starter-kit";
 import { Button } from "@/components/ui/button";
+import { useAiBubbleMenu } from "@/components/editor/useAiBubbleMenu";
 import {
   DropdownMenu,
   DropdownMenuContent,
@@ -15,8 +19,49 @@ import {
   SelectValue,
 } from "@/components/ui/select";
 
+const BubbleMenuTransactionRegression = () => {
+  const [transactionCount, setTransactionCount] = useState(0);
+  const aiBubbleMenu = useAiBubbleMenu(false);
+  const editor = useEditor({
+    extensions: [StarterKit],
+    content: "<p>Bubble menu regression</p>",
+  }, []);
+
+  useEffect(() => {
+    if (!editor) return;
+
+    const handleTransaction = () => setTransactionCount((count) => count + 1);
+    editor.on("transaction", handleTransaction);
+    const frame = window.requestAnimationFrame(() => {
+      editor.commands.setTextSelection({ from: 1, to: 7 });
+    });
+
+    return () => {
+      window.cancelAnimationFrame(frame);
+      editor.off("transaction", handleTransaction);
+    };
+  }, [editor]);
+
+  return (
+    <div
+      data-bubble-menu-regression-ready={transactionCount > 0 ? "true" : "false"}
+      data-bubble-menu-transaction-count={transactionCount}
+    >
+      <BubbleMenu
+        editor={editor}
+        shouldShow={aiBubbleMenu.shouldShow}
+        options={aiBubbleMenu.options}
+      >
+        <span>Selection action</span>
+      </BubbleMenu>
+      <EditorContent editor={editor} />
+    </div>
+  );
+};
+
 const DesktopRendererTest = () => (
   <main data-desktop-renderer-test-ready>
+    <BubbleMenuTransactionRegression />
     <DropdownMenu>
       <DropdownMenuTrigger asChild>
         <Button aria-label="More actions" title="More actions">

scripts/verify-desktop-renderer.mjs

@@ -55,7 +55,7 @@ try {
   });
   await verifyEntry({
     filePath: componentTestPath,
-    readySelector: "[data-desktop-renderer-test-ready]",
+    readySelector: '[data-desktop-renderer-test-ready] [data-bubble-menu-regression-ready="true"]',
     label: "Desktop renderer component test",
   });