feat: Add FARTCOIN-PERP market support with percentage-based sizing

- Added FARTCOIN-PERP to SUPPORTED_MARKETS (market index 22)
- Updated TradingConfig interface with fartcoin symbol settings
- Added default config: 20% portfolio, 10x leverage, disabled by default
- Updated normalizeTradingViewSymbol to detect FARTCOIN
- Enhanced getPositionSizeForSymbol for FARTCOIN-PERP handling
- Enhanced getActualPositionSizeForSymbol for percentage-based sizing
- Added FARTCOIN ENV variable loading in getConfigFromEnv
- Updated Settings UI with FARTCOIN section and percentage badge
- Added FARTCOIN fields to settings API endpoints (GET/POST)
- Created comprehensive documentation in docs/markets/FARTCOIN-PERP.md
- Build successful: TypeScript compilation and static generation complete

Co-authored-by: mindesbunister <32161838+mindesbunister@users.noreply.github.com>

config/trading.ts

@@ -28,6 +28,7 @@ export interface TradingConfig {
   // Per-symbol settings
   solana?: SymbolSettings
   ethereum?: SymbolSettings
+  fartcoin?: SymbolSettings
   
   // Risk management (as percentages of entry price - LEGACY, used as fallback)
   stopLossPercent: number // Negative number (e.g., -1.5)
@@ -135,6 +136,12 @@ export const DEFAULT_TRADING_CONFIG: TradingConfig = {
     leverage: 1, // 1x leverage = $4 notional
     usePercentageSize: false,
   },
+  fartcoin: {
+    enabled: false, // DISABLED BY DEFAULT
+    positionSize: 20, // 20% of portfolio (for profit generation)
+    leverage: 10, // 10x leverage
+    usePercentageSize: true, // PERCENTAGE-BASED (not fixed USD)
+  },
   
   // Risk parameters (LEGACY FALLBACK - used when ATR unavailable)
   stopLossPercent: -1.5, // Fallback: -1.5% if no ATR
@@ -234,6 +241,14 @@ export const SUPPORTED_MARKETS: Record<string, MarketConfig> = {
     positionSize: 40,  // $40 base capital
     leverage: 1,       // 1x leverage = $40 total exposure
   },
+  'FARTCOIN-PERP': {
+    symbol: 'FARTCOIN-PERP',
+    driftMarketIndex: 22,
+    pythPriceFeedId: '2sZomfWMDuQLcFak3nuharXorHrZ3hK8iaML6ZGSHtso',
+    minOrderSize: 1, // 1 FARTCOIN minimum
+    tickSize: 0.0001,
+    // Use per-symbol config below
+  },
 }
 
 // Map TradingView symbols to Drift markets
@@ -243,6 +258,7 @@ export function normalizeTradingViewSymbol(tvSymbol: string): string {
   if (upper.includes('SOL')) return 'SOL-PERP'
   if (upper.includes('BTC')) return 'BTC-PERP'
   if (upper.includes('ETH')) return 'ETH-PERP'
+  if (upper.includes('FARTCOIN')) return 'FARTCOIN-PERP'
   
   // Default to SOL if unknown
   console.warn(`Unknown symbol ${tvSymbol}, defaulting to SOL-PERP`)
@@ -277,6 +293,14 @@ export function getPositionSizeForSymbol(symbol: string, baseConfig: TradingConf
     }
   }
   
+  if (symbol === 'FARTCOIN-PERP' && baseConfig.fartcoin) {
+    return {
+      size: baseConfig.fartcoin.positionSize,
+      leverage: baseConfig.fartcoin.leverage,
+      enabled: baseConfig.fartcoin.enabled,
+    }
+  }
+  
   // Fallback to market-specific config, then global config
   const marketConfig = getMarketConfig(symbol)
   return {
@@ -352,6 +376,13 @@ export async function getActualPositionSizeForSymbol(
       enabled: baseConfig.ethereum.enabled,
     }
     usePercentage = baseConfig.ethereum.usePercentageSize ?? false
+  } else if (symbol === 'FARTCOIN-PERP' && baseConfig.fartcoin) {
+    symbolSettings = {
+      size: baseConfig.fartcoin.positionSize,
+      leverage: baseConfig.fartcoin.leverage,
+      enabled: baseConfig.fartcoin.enabled,
+    }
+    usePercentage = baseConfig.fartcoin.usePercentageSize ?? false
   } else {
     // Fallback to market-specific or global config
     const marketConfig = getMarketConfig(symbol)
@@ -502,6 +533,16 @@ export function getConfigFromEnv(): Partial<TradingConfig> {
         ? process.env.ETHEREUM_USE_PERCENTAGE_SIZE === 'true'
         : false,
     },
+    fartcoin: {
+      enabled: process.env.FARTCOIN_ENABLED === 'true',
+      positionSize: process.env.FARTCOIN_POSITION_SIZE
+        ? parseFloat(process.env.FARTCOIN_POSITION_SIZE)
+        : 20,
+      leverage: process.env.FARTCOIN_LEVERAGE
+        ? parseInt(process.env.FARTCOIN_LEVERAGE)
+        : 10,
+      usePercentageSize: process.env.FARTCOIN_USE_PERCENTAGE_SIZE !== 'false', // Default true
+    },
     leverage: process.env.LEVERAGE 
       ? parseInt(process.env.LEVERAGE) 
       : undefined,