Feat: add export functionality with GUI for data and graphs

- Implemented ExportWindow class for exporting data and graphs in various formats (JSON, XML, PDF).
- Integrated ExportManager to handle export logic.
- Added export option in the main application menu.
- Enhanced user interface with data summary and export options.
- Included error handling and success messages for export operations.
- Updated dependencies in the lock file to include reportlab and lxml for PDF generation.

scripts/README.md

@@ -0,0 +1,61 @@
+# TheChart Scripts Directory
+
+This directory contains testing and utility scripts for TheChart application.
+
+## Scripts Overview
+
+### Testing Scripts
+
+#### `run_tests.py`
+Main test runner for the application.
+```bash
+cd /home/will/Code/thechart
+.venv/bin/python scripts/run_tests.py
+```
+
+#### `integration_test.py`
+Comprehensive integration test for the export system.
+- Tests all export formats (JSON, XML, PDF)
+- Validates data integrity and file creation
+- No GUI dependencies - safe for automated testing
+
+```bash
+cd /home/will/Code/thechart
+.venv/bin/python scripts/integration_test.py
+```
+
+### Feature Testing Scripts
+
+#### `test_note_saving.py`
+Tests note saving and retrieval functionality.
+- Validates note persistence in CSV files
+- Tests special characters and formatting
+
+#### `test_update_entry.py`
+Tests entry update functionality.
+- Validates data modification operations
+- Tests date validation and duplicate handling
+
+## Usage
+
+All scripts should be run from the project root directory:
+
+```bash
+cd /home/will/Code/thechart
+.venv/bin/python scripts/<script_name>.py
+```
+
+## Test Data
+
+- Integration tests create temporary export files in `integration_test_exports/` (auto-cleaned)
+- Test scripts use the main `thechart_data.csv` file unless specified otherwise
+- No test data is committed to the repository
+
+## Development
+
+When adding new scripts:
+1. Place them in this directory
+2. Use the standard shebang: `#!/usr/bin/env python3`
+3. Add proper docstrings and error handling
+4. Update this README with script documentation
+5. Follow the project's linting and formatting standards

scripts/integration_test.py

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+#!/usr/bin/env python3
+"""
+Integration test for TheChart export system
+Tests the complete export workflow without GUI dependencies
+"""
+
+import sys
+from pathlib import Path
+
+# Add src to path
+sys.path.insert(0, "src")
+
+from data_manager import DataManager
+from export_manager import ExportManager
+from init import logger
+from medicine_manager import MedicineManager
+from pathology_manager import PathologyManager
+
+
+class MockGraphManager:
+    """Mock graph manager for testing."""
+
+    def __init__(self):
+        self.fig = None
+
+
+def test_integration():
+    """Test complete export system integration."""
+    print("TheChart Export System Integration Test")
+    print("=" * 45)
+
+    # 1. Initialize all managers
+    print("\n1. Initializing managers...")
+    try:
+        medicine_manager = MedicineManager(logger=logger)
+        pathology_manager = PathologyManager(logger=logger)
+        data_manager = DataManager(
+            "thechart_data.csv", logger, medicine_manager, pathology_manager
+        )
+
+        # Mock graph manager (no GUI dependencies)
+        graph_manager = MockGraphManager()
+
+        export_manager = ExportManager(
+            data_manager, graph_manager, medicine_manager, pathology_manager, logger
+        )
+        print("   ✓ All managers initialized successfully")
+    except Exception as e:
+        print(f"   ✗ Manager initialization failed: {e}")
+        return False
+
+    # 2. Check data availability
+    print("\n2. Checking data availability...")
+    try:
+        export_info = export_manager.get_export_info()
+        print(f"   Total entries: {export_info['total_entries']}")
+        print(f"   Has data: {export_info['has_data']}")
+
+        if not export_info["has_data"]:
+            print("   ✗ No data available for export")
+            return False
+
+        print(
+            f"   Date range: {export_info['date_range']['start']} "
+            f"to {export_info['date_range']['end']}"
+        )
+        print(f"   Pathologies: {len(export_info['pathologies'])}")
+        print(f"   Medicines: {len(export_info['medicines'])}")
+        print("   ✓ Data is available for export")
+    except Exception as e:
+        print(f"   ✗ Data check failed: {e}")
+        return False
+
+    # 3. Test all export formats
+    export_dir = Path("integration_test_exports")
+    export_dir.mkdir(exist_ok=True)
+
+    formats_to_test = [
+        ("JSON", "integration_test.json", export_manager.export_data_to_json),
+        ("XML", "integration_test.xml", export_manager.export_data_to_xml),
+        (
+            "PDF",
+            "integration_test.pdf",
+            lambda path: export_manager.export_to_pdf(path, include_graph=False),
+        ),
+    ]
+
+    results = []
+
+    for format_name, filename, export_func in formats_to_test:
+        print(f"\n3.{len(results) + 1}. Testing {format_name} export...")
+        try:
+            file_path = export_dir / filename
+            success = export_func(str(file_path))
+
+            if success and file_path.exists():
+                file_size = file_path.stat().st_size
+                print(
+                    f"   ✓ {format_name} export successful: {filename} "
+                    f"({file_size} bytes)"
+                )
+                results.append(True)
+            else:
+                print(f"   ✗ {format_name} export failed")
+                results.append(False)
+
+        except Exception as e:
+            print(f"   ✗ {format_name} export error: {e}")
+            results.append(False)
+
+    # 4. Summary
+    print("\n4. Test Summary")
+    print(f"   Total tests: {len(results)}")
+    print(f"   Passed: {sum(results)}")
+    print(f"   Failed: {len(results) - sum(results)}")
+
+    if all(results):
+        print("   ✓ All export formats working correctly!")
+        print(f"   Check '{export_dir}' directory for exported files.")
+        return True
+    else:
+        print("   ✗ Some export formats failed")
+        return False
+
+
+if __name__ == "__main__":
+    success = test_integration()
+    sys.exit(0 if success else 1)