fix(url): migrate Essai-thèse to /archicrat-ia (routes + index + annotations)

src/pages/archicrat-ia/[...slug].astro

@@ -5,9 +5,12 @@ import EditionToc from "../../components/EditionToc.astro";
 import LocalToc from "../../components/LocalToc.astro";
 
 export async function getStaticPaths() {
-  const entries = await getCollection("archicratie");
+  const entries = (await getCollection("archicratie"))
+    .filter((e) => e.slug.startsWith("archicrat-ia/"));
+
   return entries.map((entry) => ({
-    params: { slug: entry.slug },
+    // ✅ inline : jamais de helper externe (évite "stripPrefix is not defined")
+    params: { slug: entry.slug.replace(/^archicrat-ia\//, "") },
     props: { entry },
   }));
 }
@@ -18,10 +21,10 @@ const { Content, headings } = await entry.render();
 
 <EditionLayout
   title={entry.data.title}
-  editionLabel="Archicratie"
-  editionKey="archicratie"
-  statusLabel="modèle sociopolitique"
-  statusKey="modele_sociopolitique"
+  editionLabel="Essai-thèse"
+  editionKey="archicrat-ia"
+  statusLabel="essai-thèse"
+  statusKey="essai_these"
   level={entry.data.level}
   version={entry.data.version}
 >