fix: TOC PDF - forcer le rechargement de l'iframe (BUG-063 complement)

tests/frontend/pdf-viewer.test.mjs

@@ -67,11 +67,15 @@ test("viewer.js — TOC links carry a data-page and never poke contentWindow", (
   );
 });
 
-test("viewer.js — navigatePdfToPage reloads the iframe with the #page fragment", () => {
+test("viewer.js — navigatePdfToPage forces a reload with the #page fragment", () => {
   const fn = viewer.match(/export function navigatePdfToPage\(area, page\) \{([\s\S]*?)\n\}/);
   assert.ok(fn, "navigatePdfToPage helper not found");
   assert.match(fn[1], /data-pdf-url/, "the base URL must be preserved without the fragment");
-  assert.match(fn[1], /iframe\.src = `\$\{base\}#page=\$\{page\}`/, "the iframe must be reloaded with #page=N");
+  assert.match(
+    fn[1],
+    /_pdfpage=\$\{Date\.now\(\)\}#page=\$\{page\}/,
+    "the query must change to force a reload (a fragment-only change is ignored by the native viewer)",
+  );
 });
 
 test("style.css — full-bleed viewers ignore the centered reading width", () => {