Add .gitignore to exclude virtual environment and large files

Author: Abeshith

.gitignore

@@ -1,15 +1,34 @@
-__pycache__/
-Observability.md
-.venv/
-.__pycache__
-
-
-# DVC managed artifacts (all artifacts handled by DVC)
-artifacts/
-
-# Keep essential files for CI/CD
-!artifacts/model_evaluation/metrics.json
-!artifacts/.gitkeep
-
-# Log files
-logs/
+# Virtual environments
+mlops_env/
+venv/
+env/
+.env
+
+# Python cache
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+
+# ML artifacts (should be tracked by DVC)
+artifacts/data_ingestion/
+artifacts/model_trainer/
+*.pkl
+*.joblib
+
+# IDE
+.vscode/
+.idea/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+logs/
+
+# Temporary files
+*.tmp
+*.temp