Update deplacement_dans_env/viewer_pr_env.js

deplacement_dans_env/viewer_pr_env.js

@@ -11,6 +11,18 @@
 /* -------------------------------------------
    State (module / instance)
 -------------------------------------------- */
+
+// === Error surface ===
+window.addEventListener('error', e => {
+  console.error('[BOOT] Uncaught error:', e.message || e.error, e);
+});
+window.addEventListener('unhandledrejection', e => {
+  console.error('[BOOT] Unhandled promise rejection:', e.reason);
+});
+console.log('[BOOT] JS boot reached');   // doit s’afficher quoi qu’il arrive
+
+
+
 let pc;
 export let app = null;
 export let cameraEntity = null;