Add diffusers and safetensors to requirements for image generation

diffusers is required for Stable Diffusion image generation

requirements.txt

@@ -32,6 +32,8 @@ torch==2.0.0
 # ML dependencies
 transformers>=4.35.0
 accelerate>=0.24.0
+diffusers>=0.25.0  # For Stable Diffusion image generation
+safetensors>=0.4.0  # Required by diffusers
 
 # System resource detection
 psutil>=5.9.0