Make Russian README primary

Author: krotname

README.md

@@ -1,4 +1,4 @@
-# Codewars Solutions / Решения с Codewars
+# Решения с Codewars
 
 [![CI](https://github.com/krotname/Codewars/actions/workflows/maven.yml/badge.svg)](https://github.com/krotname/Codewars/actions/workflows/maven.yml)
 [![CodeQL](https://github.com/krotname/Codewars/actions/workflows/codeql-analysis.yml/badge.svg)](https://github.com/krotname/Codewars/actions/workflows/codeql-analysis.yml)
@@ -10,99 +10,9 @@
 [![JUnit](https://img.shields.io/badge/JUnit-6-25A162.svg)](https://junit.org/)
 [![Maven](https://img.shields.io/badge/Maven-3.9%2B-C71A36.svg)](https://maven.apache.org/)
 
-This repository is a portfolio-grade Java kata workspace focused on:
-- deterministic algorithms with reproducible tests,
-- explicit quality workflows (CI, CodeQL, coverage, static checks),
-- readable production code and practical refactoring notes,
-- bilingual project documentation.
+![Codewars Kata Java](docs/assets/project-icon.svg)
 
-English | [Русский](#русский)
-
-## English
-
-### Why this repository exists
-
-- It demonstrates practical coding and test engineering from **problem solving** to **delivery quality**.
-- All solutions are intentionally organized by difficulty/source (kyu/LeetCode/interview/transactions/other).
-- Static checks and tests are visible and runnable in one place.
-
-### Repository map
-
-- `src/main/java` — production solutions and domain classes
-- `src/test/java` — tests and quality suites
-  - `quality.SmokeSuite` (unit/smoke partition)
-  - `quality.IntegrationSuite` (transactions scenario tests)
-  - `quality.PropertySuite` (property-based tests, currently curated)
-- `.github` — CI workflows, dependabot and repo templates
-- `ARCHITECTURE.md` — architectural and reviewability notes.
-- `CHANGELOG.md`, `CONTRIBUTING.md`, `CODE_OF_CONDUCT.md`, `SECURITY.md`, `TESTING.md` — project governance
-
-### Testing strategy
-
-- **Smoke / Unit baseline** — each kata has direct tests; grouped by `quality.SmokeSuite`.
-- **Integration** — transaction validation state and ordering, via `quality.IntegrationSuite`.
-- **Property-based** — jqwik property tests are grouped in `quality.PropertySuite`.
-- **UI tests** — not applicable (`N/A` for this repository, no UI layer).
-- **Static quality gates** — Checkstyle, PMD, SpotBugs run in Maven verify and fail the build on violations.
-- **Static artifact capture** — reports from Checkstyle/PMD/SpotBugs are attached to CI artifacts for reviewer inspection.
-- **Coverage gate** — JaCoCo fails `mvn verify` below 91% line, 85% branch and 92% instruction coverage.
-
-### CI and quality signals
-
-- GitHub Actions workflow: `.github/workflows/maven.yml`
-  - category jobs (`smoke`, `integration`, `property`) on JDK 21 via JUnit tags
-  - full `mvn verify` on JDK 17 and 21
-  - uploaded test and coverage artifacts
-- Quality workflow: `.github/workflows/quality.yml`
-  - runs static checks with `checkstyle`, `pmd`, and `spotbugs` without executing tests
-  - Checkstyle, PMD and SpotBugs are kept clean in the current quality baseline
-  - Checkstyle uses a project-specific baseline in `config/checkstyle/checkstyle.xml`
-  - Generated smoke wrappers have explicit suppressions in `config/checkstyle/suppressions.xml`
-  - SpotBugs is kept clean with documented compatibility exceptions in `config/spotbugs-exclude.xml`
-- Security workflow: `.github/workflows/codeql-analysis.yml`
-- Dependency automation: `.github/dependabot.yml`
-- Coverage tracked in JaCoCo + Codecov; the current local baseline is 455 tests with 91.4% line,
-  85.1% branch and 92.7% instruction coverage.
-
-### Portfolio checklist
-
-- Deterministic implementations with package-localized responsibilities.
-- Clear QA signals in CI (unit/integration/property + static checks).
-- Explicit bilingual documentation for contributors and users.
-- Reproducible Maven build commands.
-- Separate quality workflow for static tooling visibility.
-
-### Local run
-
-```bash
-mvn -B verify
-mvn -B test
-mvn -B test -Dgroups='smoke'
-mvn -B test -Dgroups='integration'
-mvn -B test -Dgroups='property'
-mvn -B -DskipTests checkstyle:check pmd:check spotbugs:check
-mvn -B test -Dtest='quality.SmokeSuite'
-mvn -B test -Dtest='quality.IntegrationSuite'
-mvn -B test -Dtest='quality.PropertySuite'
-```
-
-### What code reviewers can verify quickly
-
-- No hidden mutation of test inputs inside algorithmic methods.
-- Meaningful method-level comments in non-obvious logic.
-- Deterministic edge-case handling in boundary tests.
-- Governance artifacts for maintainability and process.
-
-### Local quality policy
-
-- Use ASCII-only patch style unless a file already contains another script.
-- Keep public method behavior deterministic.
-- Add/adjust tests for any changed branch behavior.
-- Keep complexity-local comments in algorithmic methods.
-
-### Architecture
-
-- [ARCHITECTURE.md](ARCHITECTURE.md)
+[English README](README.en.md)
 
 ## Русский