Fix: use pipeline_manager.enhance() method correctly

app.py

@@ -12,7 +12,7 @@ import os
 # Add backend to path
 sys.path.insert(0, str(Path(__file__).parent))
 
-from backend.services.diffusion_pipeline import get_pipeline_manager, enhance_image as enhance_with_diffusion
+from backend.services.diffusion_pipeline import get_pipeline_manager
 from backend.services.upscaler import upscale_image
 from backend.services.postprocess import postprocess_image
 
@@ -54,9 +54,8 @@ def enhance_image_simple(
         # Step 1: AI Enhancement
         logger.info("Applying AI enhancement...")
         try:
-            enhanced = enhance_with_diffusion(
-                pipeline_manager,
-                input_image,
+            enhanced = pipeline_manager.enhance(
+                image=input_image,
                 prompt="professional architectural photography, highly detailed, 8k, photorealistic",
                 strength=strength,
                 guidance_scale=guidance_scale,