docs: add all missing 48 tools to MCP_TOOLS.md
Added documentation for:
- System tools (4): list_symbols, check_update, update, healthcheck
- Experts tools (3): list_experts, list_indicators, list_scripts
- Search & Discovery (5): search_experts, search_indicators, search_scripts, copy_indicator_to_project, copy_script_to_project
- Debugging/Diagnostics (9): diagnose_wine, get_mt5_logs, search_mt5_errors, check_mt5_process, kill_mt5_process, check_system_resources, validate_mt5_config, get_wine_prefix_info, get_backtest_crash_info
- Reports query (10): get_latest_report, search_reports, get_report_by_id, get_reports_summary, get_best_reports, search_reports_by_tags, search_reports_by_date_range, search_reports_by_notes, get_reports_by_set_file, get_comparable_reports
- Granular analytics (8): analyze_monthly_pnl, analyze_drawdown_events, analyze_top_losses, analyze_loss_sequences, analyze_position_pairs, analyze_direction_bias, analyze_streaks, analyze_concurrent_peak
- Deal-level analytics (10): list_deals, search_deals_by_comment, search_deals_by_magic, analyze_profit_distribution, analyze_time_performance, analyze_hold_time_distribution, analyze_layer_performance, analyze_volume_vs_profit, analyze_costs, analyze_efficiency
MCP_TOOLS.md now documents all 89 tools with full input/output schemas.
Devid HW
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