Code Quality - Missing Type Hints and Documentation

[AccursedGalaxy]

The codebase lacks proper type hints and documentation in many critical areas. This makes the code harder to maintain and understand.

Current State

• Most function parameters lack type hints
• Missing return type annotations
• Incomplete or missing docstrings
• No module-level documentation

Example from CryptoAnalyzer class:

async def fetch_candles(self, symbol):
    """Fetch Chart data for a given symbol."""
    since = self.exchange.parse8601(
        str(datetime.now() - timedelta(days=self.lookback_days))
    )
    candles = await self.exchange.fetch_ohlcv(symbol, self.timeframe, since)
    return candles

Should Be:

async def fetch_candles(self, symbol: str) -> List[List[float]]:
    """Fetch OHLCV chart data for a given symbol.
    
    Args:
        symbol: The trading pair symbol (e.g., 'BTC/USDT')
        
    Returns:
        List of OHLCV candles [timestamp, open, high, low, close, volume]
    """
    since = self.exchange.parse8601(
        str(datetime.now() - timedelta(days=self.lookback_days))
    )
    candles = await self.exchange.fetch_ohlcv(symbol, self.timeframe, since)
    return candles