p0: legacy hash fallback without rewriting URL

src/layouts/EditionLayout.astro

@@ -92,7 +92,8 @@ const GITEA_REPO = import.meta.env.PUBLIC_GITEA_REPO ?? "";
       const replacement = document.querySelector(`[id^="${prefix}"]`);
       if (!replacement) return;
 
-      history.replaceState(null, "", `${window.location.pathname}#${replacement.id}`);
+      console.warn("[anchors] legacy hash fallback used:", `#${oldId}`, "→", `#${replacement.id}`);
+      // On ne réécrit PAS le hash : on garde la citabilité historique visible.
       replacement.scrollIntoView({ block: "start" });
     })();