fix: improve ComfyUI model refresh logic and bridge synchronization

__init__.py

@@ -1,5 +1,56 @@
 # ComfyUI Model Downloader Bridge
+import server
+import folder_paths
+import os
+import asyncio
+from aiohttp import web
+
 print("\033[95m[Model-Downloader] UI Extension Bridge active\033[0m")
+
+@server.PromptServer.instance.routes.post("/kippster/model-downloaded")
+async def model_downloaded(request):
+    print("\033[92m🔥 [Model-Downloader] PING ERHALTEN! Erzwinge harten Backend-Reset...\033[0m")
+    
+    try:
+        # 1. Dateisystem-Cache löschen (Kurze Pause für Windows-Dateisystem-Handles)
+        await asyncio.sleep(0.5)
+        
+        # Robusteres Löschen der Caches in folder_paths
+        if hasattr(folder_paths, "folder_names"):
+            for k in list(folder_paths.folder_names.keys()):
+                folder_paths.folder_names[k] = []
+        
+        if hasattr(folder_paths, "base_path_layers"):
+            for layer in folder_paths.base_path_layers.values():
+                if hasattr(layer, "folder_names"):
+                    layer.folder_names.clear()
+        
+        if hasattr(folder_paths, "cache"):
+            folder_paths.cache.clear()
+
+        # 2. Den Definitions-Cache von ComfyUI löschen
+        # Dies zwingt ComfyUI, die Node-Metadaten (inkl. Modell-Listen) neu zu generieren
+        server.PromptServer.instance.object_info = None
+        
+        # 3. Aktiven Scan triggern
+        # Durch den Aufruf von get_filename_list wird ComfyUI gezwungen, die Ordner neu zu indizieren
+        for folder in ["checkpoints", "loras", "vae", "controlnet", "diffusion_models", "upscale_models", "clip", "unet", "gligen"]:
+            try:
+                folder_paths.get_filename_list(folder)
+            except: pass
+        
+        print("[Model-Downloader] Backend-Reset und Scan abgeschlossen.")
+
+    except Exception as e:
+        print(f"[Model-Downloader] Fehler beim Reset: {e}")
+    
+    # 4. Signale an alle Browser (jetzt mit frischen Daten)
+    # "refresh" ist ein Standard-Signal, "kippster-refresh-ui" ist unser spezieller Trigger für Deep-Update
+    server.PromptServer.instance.send_sync("refresh", {})
+    server.PromptServer.instance.send_sync("kippster-refresh-ui", {"message": "ready"})
+    
+    return web.json_response({"status": "success", "message": "Backend reset and rescan complete"})
+
 WEB_DIRECTORY = "web"
 NODE_CLASS_MAPPINGS = {}
 __all__ = ["WEB_DIRECTORY", "NODE_CLASS_MAPPINGS"]