diff --git a/.env b/.env
index d0a789a3..7a16f661 100644
--- a/.env
+++ b/.env
@@ -2,6 +2,6 @@ MERMAID_DOMAIN=''
 MERMAID_ANALYTICS_URL=''
 MERMAID_RENDERER_URL='https://mermaid.ink'
 MERMAID_KROKI_RENDERER_URL='https://kroki.io'
-MERMAID_IS_ENABLED_MERMAID_CHART_LINKS=''
+MERMAID_IS_ENABLED_MERMAID_CHART_LINKS='true'
 
 # cp .env .env.local to make local changes
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 12163b5c..2c07ca50 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -49,6 +49,6 @@ jobs:
       - uses: actions/upload-artifact@v4
         if: ${{ !cancelled() }}
         with:
-          name: playwright-report
-          path: playwright-report/
-          retention-days: 30
+          name: test-results
+          path: test-results/
+          retention-days: 7
diff --git a/package.json b/package.json
index 4b29e59a..9429f231 100644
--- a/package.json
+++ b/package.json
@@ -115,7 +115,7 @@
     ]
   },
   "engines": {
-    "node": ">=20.19.1"
+    "node": ">=20.19.0"
   },
   "packageManager": "pnpm@10.10.0+sha512.d615db246fe70f25dcfea6d8d73dee782ce23e2245e3c4f6f888249fb568149318637dca73c2c5c8ef2a4ca0d5657fb9567188bfab47f566d1ee6ce987815c39",
   "pnpm": {
diff --git a/src/lib/components/Editor.svelte b/src/lib/components/Editor.svelte
index 24fe6cfd..c03d15cd 100644
--- a/src/lib/components/Editor.svelte
+++ b/src/lib/components/Editor.svelte
@@ -32,20 +32,25 @@
           <ExclamationCircleIcon class="size-6 text-destructive" aria-hidden="true" />
           <div class="flex flex-col">
             <p>Syntax error</p>
-            {#if env.isEnabledMermaidChartLinks}
-              <p class="text-xs text-white/60">Create a free account to repair with AI</p>
+            {#if env.isEnabledMermaidChartLinks && $stateStore.editorMode === 'code'}
+              <p class="text-xs text-white/60" data-testid={TID.aiHelpText}>
+                Create a free account to repair with AI
+              </p>
             {/if}
           </div>
         </div>
-        <McWrapper>
-          <Button
-            variant="accent"
-            size="sm"
-            href={$urlsStore.mermaidChart({ medium: 'ai_repair' }).save}>
-            <MermaidChartIcon />
-            AI Repair
-          </Button>
-        </McWrapper>
+        {#if $stateStore.editorMode === 'code'}
+          <McWrapper>
+            <Button
+              variant="accent"
+              size="sm"
+              data-testid={TID.aiRepairButton}
+              href={$urlsStore.mermaidChart({ medium: 'ai_repair' }).save}>
+              <MermaidChartIcon />
+              AI Repair
+            </Button>
+          </McWrapper>
+        {/if}
       </div>
       <output class="max-h-32 overflow-auto bg-muted p-2" name="mermaid-error" for="editor">
         <pre>{$stateStore.error?.toString()}</pre>
diff --git a/src/lib/constants.ts b/src/lib/constants.ts
index 0cd308b3..2e71e336 100644
--- a/src/lib/constants.ts
+++ b/src/lib/constants.ts
@@ -1,4 +1,6 @@
 export const TID = {
+  aiHelpText: 'ai-help-text',
+  aiRepairButton: 'ai-repair-button',
   copyMarkdown: 'copy-markdown',
   diagramDocumentationButton: 'diagram-documentation-button',
   downloadPNG: 'download-PNG',
diff --git a/src/lib/util/promos/April2025.svelte b/src/lib/util/promos/April2025.svelte
index 6b57098f..d02d3635 100644
--- a/src/lib/util/promos/April2025.svelte
+++ b/src/lib/util/promos/April2025.svelte
@@ -21,37 +21,6 @@
 
   const commonParams = { utm_source: C.utmSource, utm_medium: 'banner_ad' } as const;
 
-  const randomTagLines: Taglines[] = [
-    {
-      label: 'Customize your layout and design in Mermaid Chart’s whiteboard!',
-      url: {
-        path: '/whiteboard',
-        params: { utm_campaign: 'whiteboard' }
-      }
-    },
-    {
-      label: 'Customize your layout and design in Mermaid Chart’s visual editor!',
-      url: {
-        path: '/whiteboard',
-        params: { utm_campaign: 'visual_editor' }
-      }
-    },
-    {
-      label: 'Customize your layout and design with Mermaid Chart’s GUI!',
-      url: {
-        path: '/whiteboard',
-        params: { utm_campaign: 'gui' }
-      }
-    },
-    {
-      label: 'Customize your layout and design in Mermaid Chart!',
-      url: {
-        path: '/whiteboard',
-        params: { utm_campaign: 'visual_editor_whiteboard_gui' }
-      }
-    }
-  ];
-
   let taglines: Taglines[] = [
     {
       label: 'Replace ChatGPT Pro, Mermaid.live, and Lucid Chart with Mermaid Chart',
@@ -66,33 +35,25 @@
         path: '/landing',
         params: { utm_campaign: 'team_collaboration' }
       }
+    },
+    {
+      label: 'Customize your layout and design in Mermaid Chart’s visual editor!',
+      url: {
+        path: '/whiteboard',
+        params: { utm_campaign: 'visual_editor' }
+      }
     }
   ];
 
   const getRandomIndex = (array: unknown[]) => Math.floor(Math.random() * array.length);
-  const getSessionHeadlineIndex = (): number => {
-    const storageKey = 'mermaidBannerIndex';
-    const storedIndex = sessionStorage.getItem(storageKey);
 
-    if (storedIndex) {
-      return Number.parseInt(storedIndex, 10);
-    }
-
-    const randomIndex = getRandomIndex(randomTagLines);
-    sessionStorage.setItem(storageKey, randomIndex.toString());
-    return randomIndex;
-  };
-
-  const selectedHeadlineIndex = getSessionHeadlineIndex();
-  const currentBannerSet = [...taglines, randomTagLines[selectedHeadlineIndex]];
-
-  let index = $state(getRandomIndex(currentBannerSet));
-  let currentTagline = $derived(currentBannerSet[index]);
+  let index = $state(getRandomIndex(taglines));
+  let currentTagline = $derived(taglines[index]);
   let shouldAnimate = $state(true);
 
   const interval = setInterval(() => {
     if (shouldAnimate) {
-      index = (index + 1) % currentBannerSet.length;
+      index = (index + 1) % taglines.length;
     }
   }, 5000);
 
@@ -117,9 +78,9 @@
         class="col-start-1 row-start-1 flex items-center justify-center gap-4 no-underline"
         in:fade={{ delay: 800 }}
         out:fade={{ duration: 1000 }}>
-        <span class="text-sm tracking-wider text-white">{currentTagline.label}</span>
+        <span class="text-base tracking-wider text-white">{currentTagline.label}</span>
         <Button
-          class="shrink-0 rounded-md bg-[#1E1A2E] px-3 py-1.5 text-sm font-semibold tracking-wide text-white hover:bg-[#261A56]">
+          class="shrink-0 rounded-md bg-[#1E1A2E] px-3 py-1.5 text-base font-semibold tracking-wide text-white hover:bg-[#261A56]">
           Try now
         </Button>
       </a>
diff --git a/tests/errorDisplay.spec.ts b/tests/errorDisplay.spec.ts
new file mode 100644
index 00000000..067ab144
--- /dev/null
+++ b/tests/errorDisplay.spec.ts
@@ -0,0 +1,34 @@
+import { test } from './test';
+
+test.describe('Error display tests', () => {
+  test('should show AI Repair button for syntax errors in Code tab', async ({ editPage }) => {
+    // Enter code with syntax error
+    await editPage.clearEditor();
+    await editPage.typeInEditor('graph TD\nA --> B -->');
+
+    // Verify error is displayed
+    await editPage.checkError('Syntax error');
+
+    // Verify AI Repair button and help text is shown in Code tab
+    await editPage.checkAIHelperVisibility(true);
+  });
+
+  test('should not show AI Repair button for errors in Config tab', async ({ editPage }) => {
+    // First enter valid diagram
+    await editPage.clearEditor();
+    await editPage.typeInEditor('graph TD\nA --> B');
+
+    // Switch to Config tab
+    await editPage.setEditorMode('Config');
+
+    // Enter invalid JSON in config
+    await editPage.clearEditor();
+    await editPage.typeInEditor('{\n  "theme": "default",\n  invalid json');
+
+    // Verify error is displayed
+    await editPage.checkError('Syntax error');
+
+    // Verify AI Repair button and help text is NOT shown in Config tab
+    await editPage.checkAIHelperVisibility(false);
+  });
+});
diff --git a/tests/test.ts b/tests/test.ts
index 3c4fec2c..1d5e54fe 100644
--- a/tests/test.ts
+++ b/tests/test.ts
@@ -103,6 +103,13 @@ export class EditorPage {
       `Switch to ${theme === 'light' ? 'dark' : 'light'} theme`
     );
   }
+
+  async checkAIHelperVisibility(shouldBeVisible: boolean) {
+    const button = this.page.getByTestId(TID.aiRepairButton);
+    const helpText = this.page.getByTestId(TID.aiHelpText);
+    await expect(button)[shouldBeVisible ? 'toBeVisible' : 'toBeHidden']();
+    await expect(helpText)[shouldBeVisible ? 'toBeVisible' : 'toBeHidden']();
+  }
 }
 
 export const test = base.extend<{ editPage: EditorPage }>({