fix: lint: Ban waitForTimeout, setTimeout-as-delay, and fixed sleep patterns (#442)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/harb-evaluator/helpers/swap.ts

@@ -50,6 +50,7 @@ async function waitForReceipt(rpcUrl: string, txHash: string, maxAttempts = 20):
       }
       return; // status === '0x1' — success
     }
+    // eslint-disable-next-line no-restricted-syntax -- Polling with timeout: no event source for transaction receipt over HTTP RPC (eth_subscribe not available). See AGENTS.md #Engineering Principles.
     await new Promise(r => setTimeout(r, 500));
   }
   throw new Error(`Transaction ${txHash} not mined after ${maxAttempts * 500}ms`);