improved build script.

Software/codegen/prepare_littlefs.py

@@ -22,16 +22,22 @@ def ensure_node_tool(package_name, binary_name=None):
 
     os.makedirs(tools_dir, exist_ok=True)
 
+    # Wenn Binary schon vorhanden ist, einfach zurückgeben
+    if os.path.isfile(local_bin):
+        return local_bin
+
+    print(f"🛠️  Installing missing node tool: {package_name}")
+
     # Initialisiere npm, falls noch nicht geschehen
     if not os.path.isfile(os.path.join(tools_dir, 'package.json')):
-        print("🛠️  Initializing local npm project in tools_node...")
+        print("📦 Initializing local npm project...")
         subprocess.run(['npm', 'init', '-y'], cwd=tools_dir, check=True)
 
-    # Installiere Tool (idempotent)
     try:
         subprocess.run(['npm', 'install', package_name], cwd=tools_dir, check=True)
     except Exception as e:
         print(f"❌ Fehler beim Installieren von {package_name}: {e}")
+        return binary_name  # Fallback: globale binary
 
     return local_bin if os.path.isfile(local_bin) else binary_name