Initial commit: Clean Mold Cost Calculator application

- Flask-based mold cost calculation application
- PostgreSQL database with SQLAlchemy ORM
- Docker/Podman containerization
- Comprehensive documentation in docs/
- Clean, organized codebase without obsolete files
- Production-ready deployment configuration
- Enhanced pytest configuration with coverage reporting
- Master/Development branch structure

.gitignore

@@ -0,0 +1,125 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Flask
+instance/
+.webassets-cache
+
+# Database
+*.db
+*.sqlite
+*.sqlite3
+*.db-journal
+*.sqlite-journal
+*.sqlite3-journal
+app.db
+instance/app.db
+*.bak
+*.backup
+backups/
+db_data/
+
+# Virtual Environment
+venv/
+.venv/
+ENV/
+env/
+venv.bak/
+.venv.bak/
+venv/Scripts/
+venv/bin/
+venv/include/
+venv/lib/
+venv/Lib/
+venv/share/
+venv/pyvenv.cfg
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# Environment
+.env
+.env.production
+.venv
+venv/
+ENV/
+
+# Logs
+*.log
+logs/
+
+# System
+.DS_Store
+Thumbs.db
+
+# Docker
+mold-cost-calculator.tar mold_cost_tool.tar
+
+# New test file and database sync log file
+*.sql
+*.zip
+DEV_BRANCH_TEST.md
+
+# Logs
+!logs/deploy.log
+!logs/db_sync.log
+logs/*
+!logs/.gitkeep
+db_sync.log
+
+# Coverage and Testing
+.coverage
+.coverage.*
+htmlcov/
+.pytest_cache/
+.tox/
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+
+# Temporary and Proposal Files
+*.proposal
+*_proposal.*
+files-to-delete.txt
+*.tmp
+*.temp
+
+# Archive Files
+*.tar
+*.tar.gz
+*.zip
+*.rar
+*.7z
+
+# PowerApps (separate project)
+powerapps/
+
+# SSL Scripts (temporary fix scripts)
+fix_ssl_*.sh
+quick_ssl_*.sh
+download_static_files.sh