Заведи каркас пакета и утилитный слой MCP-сервера

package.json, tsconfig, eslint, генерация типов из OpenAPI-спеки,
модули config/redact/errors/money/sanitize/cache с тестами и
обезличенные фикстуры живых ответов API openrusrouter.ru.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/fixtures/v1-auth-key.json

@@ -0,0 +1 @@
+{"data":{"label":"my-agent","balance":"187.42150390","account_balance":"1234.56789012","limit":"200","limit_remaining":"187.42150390","usage":"12.57849610","limit_window":"day","limit_resets_at":"2026-10-25T00:00:00Z"}}