Fix preloading to use model_ledger attribute

app.py

@@ -150,15 +150,24 @@ pipeline = DistilledPipeline(
 )
 
 # Preload all models for ZeroGPU tensor packing
-print("Preloading all pipeline components...")
-
-# DistilledPipeline components are already instantiated, just access them to ensure loaded
-_ = pipeline.prompt_encoder
-_ = pipeline.image_conditioner
-_ = pipeline.stage
-_ = pipeline.upsampler
-_ = pipeline.video_decoder
-_ = pipeline.audio_decoder
+print("Preloading all pipeline components via model_ledger...")
+
+# DistilledPipeline uses model_ledger similar to other pipelines
+ledger = pipeline.model_ledger
+_transformer = ledger.transformer()
+_video_encoder = ledger.video_encoder()
+_video_decoder = ledger.video_decoder()
+_spatial_upsampler = ledger.spatial_upsampler()
+_text_encoder = ledger.text_encoder()
+_embeddings_processor = ledger.gemma_embeddings_processor()
+
+# Replace ledger methods with lambdas returning preloaded instances
+ledger.transformer = lambda: _transformer
+ledger.video_encoder = lambda: _video_encoder
+ledger.video_decoder = lambda: _video_decoder
+ledger.spatial_upsampler = lambda: _spatial_upsampler
+ledger.text_encoder = lambda: _text_encoder
+ledger.gemma_embeddings_processor = lambda: _embeddings_processor
 
 print("All models preloaded!")