update streamlit

cookbook/pocketflow-streamlit-hitl/README.md

@@ -2,6 +2,12 @@
 
 Human-in-the-Loop (HITL) image generation application using PocketFlow and Streamlit. Enter text prompts, generate images with OpenAI, and approve/regenerate results.
 
+<p align="center">
+  <img 
+    src="./assets/banner.png" width="800"
+  />
+</p>
+
 ## Features
 
 -   **Image Generation:** Uses OpenAI's `gpt-image-1` model to generate images from text prompts

cookbook/pocketflow-streamlit-hitl/utils/process_task.py

@@ -1,24 +0,0 @@
-import time
-
-def process_task(task_input: str) -> str:
-    """
-    Simulates processing the input, potentially calling an LLM.
-    Replace this with your actual task logic.
-    """
-    print(f"Processing task: {task_input[:50]}...")
-
-    result = f"Dummy rephrased text for the following input: {task_input}"
-
-    # Simulate some work
-    time.sleep(2) 
-    return result
-
-if __name__ == "__main__":
-    test_input = "This is a test input for the processing task."
-    print(f"Input: {test_input}")
-    output = process_task(test_input)
-    print(f"Output: {output}")
-
-# We don't need a separate utils/call_llm.py for this minimal example,
-# but you would add it here if ProcessNode used an LLM.
-