feat: MT5-Quant MCP server for backtesting and optimization

MCP server exposing MetaTrader 5 strategy development tools to AI
assistants (Claude, Cursor, etc.) on macOS (CrossOver) and Linux (Wine).

Tools:
- run_backtest: full pipeline — compile EA, clean cache, backtest,
  parse HTML/XML report, analyze deals → metrics.json + analysis.json
- run_optimization: background genetic optimization with nohup/disown,
  UTF-16LE .set file handling, OptMode reset
- compile_ea: MQL5 compilation via MetaEditor with auto-detected
  include/ directory sync
- get_backtest_status / get_optimization_status: job polling
- verify_environment: Wine/MT5 path validation

Analytics:
- extract.py: MT5 HTML and SpreadsheetML XML report parser
- analyze.py: deal-level analysis (drawdown events, grid depth,
  loss sequences, monthly P&L) → analysis.json
- optimize_parser.py: optimization result parser with convergence analysis

Platform support:
- macOS CrossOver (GUI mode, no Xvfb needed)
- Linux Wine + Xvfb (headless, CI/CD compatible)
- Auto-detection of Wine executable and MT5 terminal paths

.gitignore

@@ -0,0 +1,30 @@
+# Python
+__pycache__/
+*.py[cod]
+*.egg-info/
+dist/
+build/
+.venv/
+venv/
+
+# Reports (generated, not tracked)
+reports/20*/
+reports/*_opt/
+
+# Job metadata
+.mt5mcp_jobs/
+
+# Config (contains local paths)
+config/mt5-quant.yaml
+config/baseline.json
+config/backtest_history.json
+
+# Claude Code (personal, not for repo)
+CLAUDE.md
+
+# macOS
+.DS_Store
+
+# Logs
+*.log
+/tmp/mt5opt_*