diff --git a/src/pages/annotations-index.json.ts b/src/pages/annotations-index.json.ts
index 6f90970..a81f346 100644
--- a/src/pages/annotations-index.json.ts
+++ b/src/pages/annotations-index.json.ts
@@ -103,10 +103,16 @@ export const GET: APIRoute = async () => {
   const errors: Array<{ file: string; error: string }> = [];
 
   let files: string[] = [];
+  let missingRoot = false;
+
   try {
     files = await walk(ANNO_ROOT);
   } catch (e: any) {
-    throw new Error(`Missing annotations root: ${ANNO_ROOT} (${e?.message || e})`);
+    // ✅ FAIL-OPEN : pas d’annotations => index vide (ne casse pas la build)
+    missingRoot = true;
+    console.warn(`[annotations-index] Missing annotations root: ${ANNO_ROOT} (${e?.message || e})`);
+    files = [];
+    errors.push({ file: "src/annotations", error: `Missing annotations root: ${e?.message || e}` });
   }
 
   for (const fp of files) {
@@ -189,7 +195,9 @@ export const GET: APIRoute = async () => {
     errors,
   };
 
-  if (errors.length) {
+  // ✅ FAIL-OPEN uniquement si le dossier manque.
+  // Si le dossier existe mais qu’un YAML est cassé -> fail-closed.
+  if (errors.length && !missingRoot) {
     throw new Error(`${errors[0].file}: ${errors[0].error}`);
   }