Add SwapExecutor support

[fengtality]

Summary

• Register SwapExecutor in EXECUTOR_REGISTRY
• Add swap_executor to available executor types endpoint

Dependencies

• Requires: Add SwapExecutor for Gateway AMM swaps with retry logic hummingbot#8117

Test plan

• Verify swap_executor appears in /executors/types/available
• Verify swap_executor can be created via POST /executors/
• Verify swap completes and custom_info is populated

🤖 Generated with Claude Code

[rapcmia]

• Commit f9f203d
  • Successfully build local image using whl created from Add SwapExecutor for Gateway AMM swaps with retry logic hummingbot#8117 locally ✅
  • Successfully start hummingbot-api ✅
  • Setup gateway along with helius as nodeURL ✅

Verify swap_executor appears in /executors/types/available ✅

curl -s -u admin:XXX http://localhost:8000/executors/types/available | jq
{
  "executor_types": [
    {
      "type": "position_executor",
      "description": "Single position with triple barrier (stop loss, take profit, time limit)",
      "use_case": "Directional trading with risk management"
    },
    {
      "type": "grid_executor",
      "description": "Grid trading with multiple buy/sell levels",
      "use_case": "Range-bound market trading"
    },
    {
      "type": "dca_executor",
      "description": "Dollar-cost averaging with multiple entry points",
      "use_case": "Gradual position building"
    },
    {
      "type": "twap_executor",
      "description": "Time-weighted average price execution",
      "use_case": "Large order execution with minimal market impact"
    },
    {
      "type": "arbitrage_executor",
      "description": "Cross-exchange price arbitrage",
      "use_case": "Exploiting price differences between exchanges"
    },
    {
      "type": "xemm_executor",
      "description": "Cross-exchange market making",
      "use_case": "Providing liquidity across exchanges"
    },
    {
      "type": "order_executor",
      "description": "Simple order execution with retry logic",
      "use_case": "Basic order placement with reliability"
    },
    {
      "type": "lp_executor",
      "description": "LP position management for CLMM pools (Meteora, Raydium) ",
      "use_case": "Automated liquidity provision with position tracking"
    },
    {
      "type": "swap_executor",
      "description": "Single swap execution on Gateway AMM connectors",
      "use_case": "Executing swaps on DEXs like Jupiter with retry logic"
    }
  ]
}
logs: INFO:     172.18.0.1:56034 - "GET /executors/types/available HTTP/1.1" 200 OK

---

Verify swap_executor can be created via POST /executors/

  curl -s -u admin:XXX -H "Content-Type: application/json" -d '
  {
    "account_name": "master_account",
    "executor_config": {
      "type": "swap_executor",
      "connector_name": "jupiter",
      "trading_pair": "SOL-USDC",
      "side": 1,
      "amount": "0.1",
      "slippage_pct": "1.0"
    }
  }' http://localhost:8000/executors/ | jq

• User should add /router, /clmm, and /amm connectors (e.g., jupiter/router, meteora/clmm)
• Executed swaps on side 1 and side 2, both completed successfully
• Verified executor/id status is TERMINATED with close type: completed ✅