Update app_main.py

app_main.py

@@ -121,6 +121,10 @@ def extract_images_from_pdf(pdf_path, output_json_path):
     print(f"✅ Manipulated sprite JSON saved: {final_json_path}")
     return final_json_path, manipulated_json
 
+@app.route('/')
+def index():
+    return render_template('app_index.html')
+
 # API endpoint
 @app.route('/process_static_pdf', methods=['POST'])
 def process_static_pdf():