Create app.py

app.py

@@ -0,0 +1,23 @@
+from flask import Flask, render_template, request, jsonify
+import json
+
+app = Flask(__name__)
+
+# Store nodes and connections in memory (replace with database for persistence)
+nodes = []
+connections = []
+
+@app.route('/')
+def index():
+    return render_template('index.html')
+
+@app.route('/save_nodes', methods=['POST'])
+def save_nodes():
+    global nodes, connections
+    data = request.get_json()
+    nodes = data.get('nodes', [])
+    connections = data.get('connections', [])
+    return jsonify({'status': 'success', 'nodes': nodes, 'connections': connections})
+
+if __name__ == '__main__':
+    app.run(debug=True)