updates makefil. deletes unnecessary files

Makefile

@@ -8,7 +8,65 @@ all: run
 clean:
 	rm -rf venv build dist .pytest_cache .mypy_cache *.egg-info
 
-DB_PATH=scipaperloader/papers.db
+DB_PATH=scipaperloader/papers# Backup the database
+backup-db:
+    @mkdir -p backups
+    @timestamp=$$(date +%Y%m%d_%H%M%S); \
+    cp $(DB_PATH) backups/papers_$$timestamp.db && \
+    echo "Database backed up to backups/papers_$$timestamp.db"
+
+# Create sample test data
+sample-data: venv
+    $(PYTHON) scipaperloader/scripts/create_sample_data.py
+
+# Export database as SQL
+export-db: venv
+    @mkdir -p exports
+    @timestamp=$$(date +%Y%m%d_%H%M%S); \
+    $(PYTHON) -c "import sqlite3; conn = sqlite3.connect('$(DB_PATH)'); with open('exports/papers_$$timestamp.sql', 'w') as f: f.write(''.join(conn.iterdump()));" && \
+    echo "Database exported to exports/papers_$$timestamp.sql"	# Run with production settings
+	run-prod: venv
+		FLASK_ENV=production venv/bin/flask --app scipaperloader run --host=0.0.0.0
+
+# Check for security vulnerabilities
+security-check: venv
+$(PIP) install safety
+venv/bin/safety check
+
+# Run specific migration commands
+db-migrate: venv
+	venv/bin/flask --app scipaperloader db migrate -m "$(message)"
+
+db-upgrade: venv
+	venv/bin/flask --app scipaperloader db upgrade
+
+db-downgrade: venv
+	venv/bin/flask --app scipaperloader db downgrade		# Generate API documentation using sphinx
+	
+docs: venv
+	$(PIP) install sphinx sphinx_rtd_theme
+	cd docs && venv/bin/sphinx-build -b html source build
+
+# Create a code coverage report
+coverage: venv
+	$(PYTHON) -m pytest --cov=scipaperloader --cov-report=html
+	@echo "Coverage report generated in htmlcov/"
+
+# Generate a requirements.txt file
+requirements: venv
+	$(PIP) freeze > requirements.txt
+	@echo "Requirements file updated"			# Show project stats
+	stats:
+		@echo "Lines of Python code:"
+		@find scipaperloader -name "*.py" | xargs wc -l | sort -nr
+		@echo "Number of routes:"
+		@grep -r "@bp.route" scipaperloader | wc -l
+		@echo "Database file size:"
+		@du -h $(DB_PATH) 2>/dev/null || echo "Database file not found"
+		
+	# Show TODOs in code
+	todos:
+		@grep -r "TODO\|FIXME" scipaperloader || echo "No TODOs found".db
 
 reset-db:
 	rm -f $(DB_PATH)