Update README and add debug upload test - investigate file upload issues

README.md

@@ -1,20 +1,34 @@
 ---
 title: Entity Resolution Network Analysis
-emoji: 🚀
-colorFrom: red
-colorTo: red
+emoji: 🔗
+colorFrom: blue
+colorTo: green
 sdk: docker
 app_port: 8501
 tags:
 - streamlit
+- entity-resolution
+- network-analysis
+- csv
 pinned: false
-short_description: Streamlit template space
+short_description: Entity Resolution and Network Graph Visualization for CSV data
 license: mit
 ---
 
-# Welcome to Streamlit!
+# Entity Resolution Network Analysis
 
-Edit `/src/streamlit_app.py` to customize this app to your heart's desire. :heart:
+Upload CSV data and visualize entity resolution results with interactive network graphs using st-link-analysis.
 
-If you have any questions, checkout our [documentation](https://docs.streamlit.io) and [community
-forums](https://discuss.streamlit.io).
+## Features
+
+- CSV file upload with entity resolution
+- Interactive network graph visualization
+- Similarity threshold controls
+- Community detection
+- Sample data for testing
+
+## Usage
+
+1. Upload a CSV file or use sample data
+2. Configure similarity columns and threshold
+3. Run entity resolution to see network connections

src/debug_upload.py

@@ -0,0 +1,26 @@
+import streamlit as st
+import pandas as pd
+
+st.title("File Upload Debug Test")
+
+# Simple file uploader
+uploaded_file = st.file_uploader("Upload CSV", type=["csv"])
+
+st.write("Debug Info:")
+st.write(f"uploaded_file object: {uploaded_file}")
+st.write(f"uploaded_file is None: {uploaded_file is None}")
+
+if uploaded_file is not None:
+    st.success(f"File detected: {uploaded_file.name}")
+    st.write(f"File size: {uploaded_file.size}")
+    st.write(f"File type: {uploaded_file.type}")
+    
+    try:
+        df = pd.read_csv(uploaded_file)
+        st.success("CSV read successfully!")
+        st.write(f"Shape: {df.shape}")
+        st.dataframe(df.head())
+    except Exception as e:
+        st.error(f"Error reading CSV: {e}")
+else:
+    st.warning("No file uploaded")