fix(web): plein écran lecteur — header overlay et masquage automatique après 2 s d'inactivité

apps/web/src/reader/readerRuntime.test.ts

@@ -15,7 +15,7 @@ import {
   zoomReaderSize
 } from "./readerLayout";
 import { classifyPdfCanvas, pdfCanvasHasVisibleContent, pdfCanvasVisible, pdfRenderScale } from "./pdfRender";
-import { isElementFullscreen, isReaderInteractiveTarget, readerArrowAction, shouldHandleReaderArrowKey, supportsElementFullscreen } from "./readerFullscreen";
+import { isElementFullscreen, isReaderHeaderActive, isReaderInteractiveTarget, readerArrowAction, shouldHandleReaderArrowKey, supportsElementFullscreen } from "./readerFullscreen";
 import { configurePdfWorker, pdfWorkerSrc } from "./pdfWorker";
 import { readerErrorMessage } from "./ReaderError";
 
@@ -185,6 +185,35 @@ describe("reader runtime helpers", () => {
     expect(isElementFullscreen(regularElement, documentRef)).toBe(false);
   });
 
+  it("keeps the fullscreen reader header visible while it is actively used", () => {
+    const focusedControl = {};
+    const focusedHeader = {
+      contains: (target: unknown) => target === focusedControl,
+      matches: () => false,
+      querySelector: () => null
+    } as unknown as HTMLElement;
+    const hoveredHeader = {
+      contains: () => false,
+      matches: (selector: string) => selector === ":hover",
+      querySelector: () => null
+    } as unknown as HTMLElement;
+    const menuOpenHeader = {
+      contains: () => false,
+      matches: () => false,
+      querySelector: () => ({})
+    } as unknown as HTMLElement;
+    const idleHeader = {
+      contains: () => false,
+      matches: () => false,
+      querySelector: () => null
+    } as unknown as HTMLElement;
+
+    expect(isReaderHeaderActive(focusedHeader, { activeElement: focusedControl } as unknown as Document)).toBe(true);
+    expect(isReaderHeaderActive(hoveredHeader, { activeElement: null } as unknown as Document)).toBe(true);
+    expect(isReaderHeaderActive(menuOpenHeader, { activeElement: null } as unknown as Document)).toBe(true);
+    expect(isReaderHeaderActive(idleHeader, { activeElement: null } as unknown as Document)).toBe(false);
+  });
+
   it("keeps reader arrow shortcuts away from interactive or external targets", () => {
     const originalElement = globalThis.Element;
     const originalNode = globalThis.Node;