Add data export functionality (JSON and CSV)

.gitignore

@@ -25,3 +25,4 @@ venv/
 .DS_Store
 logs/
 *.log
+exports/

data_exporter.py

@@ -0,0 +1,40 @@
+"""
+Data export functionality
+"""
+
+import json
+import csv
+from datetime import datetime
+
+
+class DataExporter:
+    def __init__(self, output_dir='exports'):
+        self.output_dir = output_dir
+
+    def export_to_json(self, data, filename=None):
+        """Export data to JSON format"""
+        if filename is None:
+            filename = f"tracker_data_{datetime.now().strftime('%Y%m%d_%H%M%S')}.json"
+
+        filepath = f"{self.output_dir}/{filename}"
+
+        with open(filepath, 'w') as f:
+            json.dump(data, f, indent=2)
+
+        return filepath
+
+    def export_to_csv(self, data, filename=None):
+        """Export data to CSV format"""
+        if filename is None:
+            filename = f"tracker_data_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv"
+
+        filepath = f"{self.output_dir}/{filename}"
+
+        if isinstance(data, list) and len(data) > 0:
+            keys = data[0].keys()
+            with open(filepath, 'w', newline='') as f:
+                writer = csv.DictWriter(f, fieldnames=keys)
+                writer.writeheader()
+                writer.writerows(data)
+
+        return filepath