Add system inventory endpoint for operational visibility

[Copilot]

Implements comprehensive system state inspection via new /api/v1/system-info endpoint and /system Telegram command, answering "что мы имеем" (what we have).

Changes

Backend (backend/api/routes.py)

• Added GET /api/v1/system-info endpoint returning:
  • Configuration (capital, risk parameters, strategy indicators)
  • Portfolio state (equity, positions, P&L)
  • Trading statistics (win rate, profit factor, avg win/loss)
  • Exchange connectivity and database status
  • Available API endpoints and bot commands
• Query limited to last 1000 trades for performance
• Specific exception handling for exchange connectivity (ConnectionError, TimeoutError)

Bot (bot/main.py)

• Added /system command handler with formatted output
• Updated /start and /help command lists

Documentation

• Added SYSTEM_INFO_FEATURE.md with API structure, use cases, and maintenance notes
• Updated command references in README.md and QUICKSTART.md

Example Response

{
  "configuration": {
    "initial_capital": 500.0,
    "risk_per_trade": "2.0%",
    "max_open_positions": 1
  },
  "statistics": {
    "win_rate": 55.2,
    "profit_factor": 1.45,
    "total_trades": 42
  },
  "exchange": {
    "name": "Binance",
    "mode": "testnet",
    "status": "connected"
  }
}

Single command visibility into system state for monitoring and troubleshooting.

Original prompt

что мы имеем

Custom agent used: ruthless-builderhttps://github.com/QOAB/spark/tree/main
Hardline systems builder that decomposes requirements into components, attacks weak spots, and enforces executable plans with clear interfaces.

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