Add core infrastructure: config, Binance adapter, docs, and auto-setup

- Add Pydantic settings with trading mode validation (paper/testnet/live)
- Implement Binance USDⓈ-M Futures adapter with hedge mode, isolated margin
- Add type definitions for orders, positions, and market data
- Create documentation (PLAN.md, ARCHITECTURE.md, SECURITY.md)
- Add setup.sh with uv/pip auto-detection for consistent dev environments
- Configure Docker multi-stage build and docker-compose services
- Add pyproject.toml with all dependencies and tool configs

.gitignore

@@ -0,0 +1,77 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Virtual environments
+.venv/
+venv/
+ENV/
+env/
+.uv/
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+.project
+.pydevproject
+.settings/
+
+# Testing
+.coverage
+.pytest_cache/
+htmlcov/
+.tox/
+.nox/
+
+# Type checking
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Ruff
+.ruff_cache/
+
+# Environment
+.env
+.env.*
+!.env.example
+
+# Data files
+*.duckdb
+*.db
+*.sqlite
+*.sqlite3
+
+# Logs
+*.log
+logs/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Secrets (never commit these)
+*.pem
+*.key
+secrets/