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feat: Alpaca US stock trader integration (Tasks 8-11)

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- trader/alpaca/: Full Trader interface implementation for Alpaca
  - Paper/Live trading support (market orders, stop/limit)
  - GetBalance, GetPositions, GetMarketPrice via Alpaca API
  - Fractional share support (4 decimal places)
  - Commission-free trading

- Agent trade routing: stock symbols (AAPL, TSLA) → Alpaca
  - isStockSymbol() heuristic to distinguish crypto vs stock
  - execute_trade tool updated for stock buy/sell semantics
  - get_market_price works for both crypto and stocks

- TraderManager + API: Alpaca registered as exchange type
  - Factory case in auto_trader.go
  - Config mapping in trader_manager.go
  - Temp trader creation in handler_trader.go for balance query

- Frontend: PositionsPanel distinguishes stock vs crypto
  - US flag emoji for stock positions
  - Dollar prefix for stock PnL/prices
  - 'Shares' label instead of 'Qty' for stocks

- System prompts updated for stock trading capabilities
This commit is contained in:
shinchan-zhai
2026-03-23 17:57:14 +08:00
parent 76a7b88ba8
commit d0aebe9f18
9 changed files with 720 additions and 17 deletions
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4
manager/trader_manager.go
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@@ -704,6 +704,10 @@ func (tm *TraderManager) addTraderFromStore(traderCfg *store.Trader, aiModelCfg
case "indodax":
traderConfig.IndodaxAPIKey = string(exchangeCfg.APIKey)
traderConfig.IndodaxSecretKey = string(exchangeCfg.SecretKey)
case "alpaca":
traderConfig.AlpacaAPIKey = string(exchangeCfg.APIKey)
traderConfig.AlpacaAPISecret = string(exchangeCfg.SecretKey)
traderConfig.AlpacaPaper = exchangeCfg.Testnet // Reuse Testnet field for paper/live toggle
}
// Set API keys based on AI model (convert EncryptedString to string)