chore: update to framework 5.5.0

[Systerr]

Summary

• Framework 5.5.0: @adaptivestone/framework ^5.5.0. Only the framework moved in the lockfile.
• createEnv replaces scripts/ensure-env.ts: npm run dev now runs npm run cli createEnv before nodemon. It copies .env.example to .env with a fresh AUTH_SALT and never overwrites an existing .env. The script is deleted; .env.example, AGENTS.md and the README are updated.
• Coded, translated 404: GET /person/:id throws NotFoundError({ code: 'PERSON_NOT_FOUND', i18nKey: 'person.notFound', message: 'Person not found' }).
  • The response is { "error": "PERSON_NOT_FOUND", "message": "..." }, and src/locales/ru translates the message.
  • The test asserts the exact English body; tests don't load the app's locales, by design.
  • The README shows the Russian curl.
• Error rules aligned with the framework contract:
  • .clinerules/01-ResponceType.md and 07-ErrorHandling.md now describe what the framework actually answers: { error?, message, errors?: { field: [msg] } }, with per-field arrays and no data.
  • They show throwing coded HttpErrors. 03 and 08 are unchanged for now.
• No custom health route:
  • The bootHttp showcase registers POST /webhooks/example (202 { data: { received: true } }) instead of GET /health, with a note to verify provider signatures with timingSafeEqualStrings.
  • The framework now serves /health/live and /health/ready, and the README has a "Health checks" row for them.
  • The bootHttp test, configureServer.ts and .clinerules/11 follow the new route.

Verification (in the Docker backend container)

• npm run check:types (codegen + tsc) and npm run check (Biome): pass
• npm test: 9/9
• Bun (docker compose --profile bun run --rm backend-bun): 9/9
• createEnv on a fresh copy without .env: creates it with a 64-character salt, keeps every other line, and a second run changes nothing
• Live server:
  • the 404 in English and Russian, with the code;
  • the Russian 401 AUTH001;
  • /health/live → 200, and /health/ready → 200 with the MongoDB check;
  • POST /webhooks/example → 202;
  • GET /health → the framework's 404.