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/api-usage.json

@@ -0,0 +1 @@
+{"data":[{"model":"deepseek/deepseek-v4-flash","requests":5,"tokens_prompt":51230,"tokens_cached":0,"tokens_completion":11874,"amount_rub":"0.8124417"},{"model":"elevenlabs/eleven-flash-v2","requests":3,"tokens_prompt":15,"tokens_cached":0,"tokens_completion":0,"amount_rub":"0.18412076"},{"model":"openai/whisper-1","requests":2,"tokens_prompt":0,"tokens_cached":0,"tokens_completion":0,"amount_rub":"0.24310558"},{"model":"openai/gpt-6-luna","requests":2,"tokens_prompt":1022,"tokens_cached":256,"tokens_completion":611,"amount_rub":"0.05120934"},{"model":"qwen/qwen3-coder-30b-a3b-instruct","requests":1,"tokens_prompt":301,"tokens_cached":0,"tokens_completion":38,"amount_rub":"0.00371284"}],"failed_events":0,"group_by":"model","from":"2026-10-17T03:39:57Z","to":"2026-10-24T03:39:57Z"}