Add Oxlint configuration and integrate linting commands

- Introduced a new `.oxlintrc.json` file to configure Oxlint for code quality checks.
- Updated `package.json` to include linting scripts (`lint` and `lint:fix`) for easier code maintenance.
- Enhanced documentation in `README` files to guide users on running Oxlint checks and applying fixes.

src/index.tsx

@@ -4,7 +4,6 @@ import { App } from "./ui/App";
 import { setupGlobalErrorHandlers } from "./runtime-errors";
 import { parseCliArgs, printCliHelp } from "./cli/args";
 import { startStrategy } from "./cli/strategy-runner";
-import { resolveExchangeId } from "./exchanges/create-adapter";
 import { CommandParseError, parseCommandArgv, printCommandHelp } from "./cli/command-parser";
 import { executeCliCommand, renderCommandPayload } from "./cli/command-executor";