fix(plugins): restore ChatGPT formula copy in Edge

.github/docs/REGRESSION_NOTES.md

@@ -1196,3 +1196,35 @@ Regression test:
 
 Commit:
 `fix(timeline): keep compact preview open across hover gap`
+
+## ChatGPT KaTeX may omit MathML annotations
+
+Symptom:
+
+Formula Copy showed its hover treatment on ChatGPT, but clicking a formula did
+not copy anything or show a toast. The same feature continued to work on
+Gemini.
+
+Root cause:
+
+ChatGPT's client-side KaTeX layout stopped rendering the hidden MathML
+`annotation[encoding="application/x-tex"]` used by the original extractor. The
+raw TeX moved to `data-math-source` on the semantic wrapper outside
+`.katex-display`. Without the MathML node, display-mode detection also lost its
+old `math[display="block"]` signal.
+
+Fix:
+
+Read `data-math-source` from the nearest semantic wrapper before falling back
+to legacy annotations, and recognize `.katex-display` directly for block
+delimiters. Keep the annotation path for Claude and older ChatGPT markup.
+
+Regression test:
+
+`src/features/formulaCopy/FormulaCopyService.test.ts`
+(`copies current ChatGPT block KaTeX from data-math-source without MathML` and
+`copies current ChatGPT inline KaTeX from data-math-source as inline LaTeX`).
+
+Commit:
+
+`fix(plugins): restore ChatGPT formula copy in Edge`

src/features/formulaCopy/FormulaCopyService.test.ts

@@ -475,10 +475,8 @@ describe('FormulaCopyService', () => {
     document.body.removeChild(displayMath);
   });
 
-  // ChatGPT and Claude render math with standard KaTeX: a `.katex` span whose
-  // `.katex-mathml` holds <annotation encoding="application/x-tex">, with block
-  // formulas wrapped in `.katex-display` and `math[display="block"]`. There is no
-  // `data-math` attribute and no `<ms-katex>` wrapper (unlike Gemini / AI Studio).
+  // Claude and older ChatGPT markup render standard KaTeX with a MathML
+  // annotation. Keep this fixture to preserve compatibility with that shape.
   function makeKatex(latex: string, opts: { display: boolean }): HTMLElement {
     const katex = document.createElement('span');
     katex.className = 'katex';
@@ -560,4 +558,64 @@ describe('FormulaCopyService', () => {
 
     document.body.removeChild(block);
   });
+
+  function makeCurrentChatGptKatex(latex: string, display: boolean): HTMLElement {
+    const semanticWrapper = document.createElement('span');
+    semanticWrapper.setAttribute('role', 'math');
+    semanticWrapper.setAttribute('aria-label', latex);
+    semanticWrapper.setAttribute('data-math-source', latex);
+
+    const katex = document.createElement('span');
+    katex.className = 'katex';
+    const html = document.createElement('span');
+    html.className = 'katex-html';
+    html.setAttribute('aria-hidden', 'true');
+    html.textContent = 'rendered';
+    katex.appendChild(html);
+
+    if (display) {
+      const displayWrapper = document.createElement('span');
+      displayWrapper.className = 'katex-display';
+      displayWrapper.appendChild(katex);
+      semanticWrapper.appendChild(displayWrapper);
+    } else {
+      semanticWrapper.appendChild(katex);
+    }
+
+    return semanticWrapper;
+  }
+
+  it('copies current ChatGPT block KaTeX from data-math-source without MathML', async () => {
+    const clipboard = navigator.clipboard as unknown as { write?: unknown };
+    clipboard.write = undefined;
+
+    resetSingleton();
+    service = FormulaCopyService.getInstance({ format: 'latex' });
+
+    const block = makeCurrentChatGptKatex('C = B\\log_2\\left(1+\\frac{S}{N}\\right)', true);
+    document.body.appendChild(block);
+
+    service.initialize();
+    block.querySelector('.katex-html')!.dispatchEvent(new MouseEvent('click', { bubbles: true }));
+    await Promise.resolve();
+
+    expect(writeTextMock).toHaveBeenCalledWith('$$C = B\\log_2\\left(1+\\frac{S}{N}\\right)$$');
+  });
+
+  it('copies current ChatGPT inline KaTeX from data-math-source as inline LaTeX', async () => {
+    const clipboard = navigator.clipboard as unknown as { write?: unknown };
+    clipboard.write = undefined;
+
+    resetSingleton();
+    service = FormulaCopyService.getInstance({ format: 'latex' });
+
+    const inline = makeCurrentChatGptKatex('E = mc^2', false);
+    document.body.appendChild(inline);
+
+    service.initialize();
+    inline.querySelector('.katex-html')!.dispatchEvent(new MouseEvent('click', { bubbles: true }));
+    await Promise.resolve();
+
+    expect(writeTextMock).toHaveBeenCalledWith('$E = mc^2$');
+  });
 });

src/features/formulaCopy/FormulaCopyService.ts

@@ -190,13 +190,20 @@ export class FormulaCopyService {
       return dataMath;
     }
 
-    // 2. Try AI Studio's annotation element with encoding="application/x-tex"
+    // 2. ChatGPT's client-side KaTeX layout omits the MathML annotation and
+    // keeps the original TeX on the semantic wrapper around .katex-display.
+    const dataMathSource = element.closest('[data-math-source]')?.getAttribute('data-math-source');
+    if (dataMathSource?.trim()) {
+      return dataMathSource.trim();
+    }
+
+    // 3. Try AI Studio's annotation element with encoding="application/x-tex"
     const annotation = element.querySelector('annotation[encoding="application/x-tex"]');
     if (annotation?.textContent) {
       return annotation.textContent.trim();
     }
 
-    // 3. Fallback: try any annotation element
+    // 4. Fallback: try any annotation element
     const anyAnnotation = element.querySelector('annotation');
     if (anyAnnotation?.textContent) {
       return anyAnnotation.textContent.trim();
@@ -399,13 +406,19 @@ export class FormulaCopyService {
       return true;
     }
 
-    // 2. AI Studio: check for math element with display="block" attribute
+    // 2. ChatGPT / Claude: block KaTeX uses a .katex-display wrapper. Current
+    // ChatGPT markup no longer includes the MathML node checked below.
+    if (element.closest('.katex-display') !== null) {
+      return true;
+    }
+
+    // 3. AI Studio: check for math element with display="block" attribute
     const mathElement = element.querySelector('math[display="block"]');
     if (mathElement) {
       return true;
     }
 
-    // 3. AI Studio: check if ms-katex container has block-like styling
+    // 4. AI Studio: check if ms-katex container has block-like styling
     // (display formulas are typically block-level in AI Studio)
     if (element.tagName.toLowerCase() === 'ms-katex') {
       const style = window.getComputedStyle(element);

src/features/plugins/runtime/messages.ts

@@ -0,0 +1 @@
+export const PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE = 'gv.plugins.syncContentScripts';

src/pages/background/__tests__/runtimeMessageRouting.test.ts

@@ -2,20 +2,36 @@ import { readFileSync } from 'node:fs';
 import { resolve } from 'node:path';
 import { describe, expect, it } from 'vitest';
 
+import { PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE } from '@/features/plugins/runtime/messages';
+
 import { isHandledBackgroundRuntimeMessage } from '../runtimeMessageRouting';
 
 describe('background runtime message routing', () => {
   it('keeps the async channel open only for exact handled message types', () => {
     expect(isHandledBackgroundRuntimeMessage({ type: 'gv.account.resolve' })).toBe(true);
     expect(isHandledBackgroundRuntimeMessage({ type: 'gv.highlight.list' })).toBe(true);
     expect(isHandledBackgroundRuntimeMessage({ type: 'gv.sync.upload' })).toBe(true);
+    expect(isHandledBackgroundRuntimeMessage({ type: PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE })).toBe(
+      true,
+    );
 
     expect(isHandledBackgroundRuntimeMessage({ type: 'gv.highlight.unknown' })).toBe(false);
     expect(isHandledBackgroundRuntimeMessage({ type: 'gv.storageQuota.ready' })).toBe(false);
     expect(isHandledBackgroundRuntimeMessage({ type: 'gv.unhandled' })).toBe(false);
     expect(isHandledBackgroundRuntimeMessage(null)).toBe(false);
   });
 
+  it('routes explicit plugin registration repair through the serialized background sync', () => {
+    const source = readFileSync(resolve(process.cwd(), 'src/pages/background/index.ts'), 'utf8');
+    const repairBranch =
+      source.match(
+        /if \(message\?\.type === PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE\) \{[\s\S]*?\n\s*\}/,
+      )?.[0] ?? '';
+
+    expect(repairBranch).toContain('await syncPluginContentScripts()');
+    expect(repairBranch).toContain('sendResponse({ ok: true })');
+  });
+
   it('uploads the complete prompt union even when duplicate names remain', () => {
     const source = readFileSync(resolve(process.cwd(), 'src/pages/background/index.ts'), 'utf8');
     const pushBranch =

src/pages/background/index.ts

@@ -55,6 +55,7 @@ import {
 } from '@/features/backup/services/HighlightImportExportService';
 import { PromptImportExportService } from '@/features/backup/services/PromptImportExportService';
 import { computeNudgeDomains, normalizeIconResourcePath } from '@/features/plugins/promptNudge';
+import { PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE } from '@/features/plugins/runtime/messages';
 import {
   partitionPluginOriginPatterns,
   pluginsToOriginPatterns,
@@ -1760,6 +1761,12 @@ chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
         return;
       }
 
+      if (message?.type === PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE) {
+        await syncPluginContentScripts();
+        sendResponse({ ok: true });
+        return;
+      }
+
       if (message?.type === 'gv.generatedUi.ensureCapturePermission') {
         sendResponse({ ok: await ensureGeneratedUiCapturePermission() });
         return;

src/pages/background/runtimeMessageRouting.ts

@@ -1,8 +1,11 @@
+import { PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE } from '@/features/plugins/runtime/messages';
+
 const HANDLED_BACKGROUND_MESSAGE_TYPES = new Set([
   'gv.fetchImage',
   'gv.fetchImageViaPage',
   'gv.generatedUi.ensureCapturePermission',
   'gv.generatedUi.captureVisibleTab',
+  PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE,
   'gv.account.resolve',
   'gv.responseComplete.notify',
   'gv.responseComplete.requestNativePermission',

src/pages/popup/components/PluginManager.tsx

@@ -7,6 +7,7 @@ import {
   supportsDynamicContentScriptRegistration,
   supportsOptionalHostPermissions,
 } from '@/core/utils/browser';
+import { PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE } from '@/features/plugins/runtime/messages';
 import { pluginToOriginPatternsForActiveUrl } from '@/features/plugins/runtime/siteRegistration';
 import { SiteRegistry } from '@/features/plugins/sites/registry';
 import {
@@ -27,6 +28,26 @@ import { IconChatGPT, IconClaude } from './WebsiteLogos';
 type EnabledMap = Record<string, boolean>;
 type SettingsMap = Record<string, Record<string, PluginSettingValue>>;
 
+/**
+ * Ask the background service to reconcile dynamic plugin content scripts after
+ * an optional host permission grant. This is best-effort because Chrome may
+ * close the popup while displaying its permission prompt; the background
+ * permissions listener remains the fallback in that case. Returns whether the
+ * background confirmed that reconciliation completed.
+ */
+async function requestPluginContentScriptSync(): Promise<boolean> {
+  try {
+    const response = (await browser.runtime.sendMessage({
+      type: PLUGIN_CONTENT_SCRIPT_SYNC_MESSAGE,
+    })) as { ok?: unknown } | null;
+    return response?.ok === true;
+  } catch {
+    // Chrome may close the popup while showing the optional-host prompt. The
+    // background permissions.onAdded listener remains the fallback in that case.
+    return false;
+  }
+}
+
 /** Logo + default accent per known site id. */
 const SITE_BADGES: Record<string, { Icon: typeof IconClaude; color: string }> = {
   claude: { Icon: IconClaude, color: '#d97757' },
@@ -167,6 +188,10 @@ export interface PluginManagerProps {
   readonly activeUrl?: string;
 }
 
+/**
+ * Render the popup's plugin catalog and manage each plugin's enabled state,
+ * optional host access, platform-specific settings, and refresh lifecycle.
+ */
 export function PluginManager({
   manifests,
   loading = false,
@@ -277,14 +302,21 @@ export function PluginManager({
               if (!alreadyGranted) {
                 // Chrome closes extension popups while showing an optional-host
                 // prompt. Persist the user's intent BEFORE opening it so a
-                // successful grant can be completed by the background
-                // permissions.onAdded handler without another popup visit.
+                // successful grant can be completed by the background even if
+                // the popup is closed before permissions.request resolves.
                 setEnabledMap((prev) => ({ ...prev, [plugin.id]: true }));
                 await setPluginEnabled(plugin.id, true);
-                if (!(await browser.permissions.request({ origins }))) {
+                const granted = await browser.permissions.request({ origins });
+                if (!granted) {
                   setEnabledMap((prev) => ({ ...prev, [plugin.id]: false }));
                   await setPluginEnabled(plugin.id, false);
                   setDeniedId(plugin.id);
+                } else {
+                  // Edge can resolve the request without reliably delivering the
+                  // permissions.onAdded event that normally performs registration.
+                  // Reconcile explicitly while retaining onAdded as Chrome's
+                  // popup-close fallback.
+                  await requestPluginContentScriptSync();
                 }
                 return;
               }
@@ -365,6 +397,7 @@ export function PluginManager({
           setDeniedId(plugin.id);
           return;
         }
+        if (!(await requestPluginContentScriptSync())) return;
         setMissingPermissionIds((previous) => {
           const next = new Set(previous);
           next.delete(plugin.id);