Real-time cryptocurrency market snapshot: top 5 gainers and top 5 losers by 24-hour percentage change (among the top 100 coins by market cap), plus the 10 largest coins by market cap with current prices and 24h change. Also returns global market statistics: total market cap (USD), BTC dominance percentage, and 24h trading volume. Stablecoins excluded from movers ranking. Use before any crypto portfolio, trading, or market analysis task to get a current regime read. Data: CoinGecko public API (r