🐛(frontend) hide the selection highlight on presenter images

Presenter reset no longer hid selection; image slides appeared focused on open.

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to
 
 - 🐛(backend) skip session creation for the liveness probe
 - 🐛(frontend) preserve page titles when adding an emoji #2586
+- 🐛(frontend) hide the selection highlight on presenter images #2665
 
 ## [v5.6.1] - 2026-09-04
 
@@ -57,7 +58,7 @@ and this project adheres to
 - 🐛(backend) fix duplicating a document that has no content #2609
 - 📄(frontend) allowed partially export when MIT #2551
 - 🐛(backend) manage async support for Docs custom middleware #2619
-- 🐛(frontend) save the doc with a keepalive 
+- 🐛(frontend) save the doc with a keepalive
   request when leaving the page #2619
 - 🐛(frontend) export any raster image supported by the browser to a PDF #2530
 

src/frontend/apps/e2e/__tests__/app-impress/presenter-mode.spec.ts

@@ -225,7 +225,7 @@ test.describe('Presenter Mode', () => {
     const presenterImage = overlay.locator('img.bn-visual-media').first();
     await expect(presenterImage).toBeAttached({ timeout: 10000 });
 
-    const outline = await presenterImage.evaluate((img) => {
+    const selectionChrome = await presenterImage.evaluate((img) => {
       const blockContent = img.closest('.bn-block-content');
       blockContent?.classList.add('ProseMirror-selectednode');
 
@@ -237,12 +237,16 @@ test.describe('Presenter Mode', () => {
       return {
         outlineStyle: style.outlineStyle,
         outlineWidth: style.outlineWidth,
+        // BlockNote also paints the selection as an ::after overlay, which
+        // an outline reset alone leaves visible.
+        overlayContent: getComputedStyle(outlinedElement, '::after').content,
       };
     });
 
-    expect(outline).toEqual({
+    expect(selectionChrome).toEqual({
       outlineStyle: 'none',
       outlineWidth: '0px',
+      overlayContent: 'none',
     });
   });
 

src/frontend/apps/impress/src/features/docs/doc-presenter/components/PresenterSlideContent.tsx

@@ -28,6 +28,16 @@ const slideContentCss = css`
     outline: 0 !important;
   }
 
+  /* BlockNote 0.54 draws the node selection as an ::after overlay
+     (translucent fill + inset ring), so zeroing the outline above is not
+     enough to hide it. */
+  .bn-block-content.ProseMirror-selectednode > *::after,
+  .ProseMirror-selectednode > .bn-block-content > *::after,
+  .bn-block-content .ProseMirror-selectednode::after,
+  .bn-inline-content .ProseMirror-selectednode::after {
+    content: none !important;
+  }
+
   .bn-block-content[data-content-type='divider'] {
     display: none;
   }