Update Jest configuration to include TypeScript support and add new code quality checks workflow; translate comments to Russian and adjust paths in test files.

.gitea/workflows/check.yaml

@@ -0,0 +1,28 @@
+name: Code Quality Checks
+run-name: Проверка кода (lint & typecheck) от ${{ gitea.actor }}
+on: [push]
+
+jobs:
+  lint-and-typecheck:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+      
+      - name: Install dependencies
+        run: npm ci
+      
+      - name: Run ESLint
+        run: npm run eslint -- --quiet
+      
+      - name: Run TypeScript type check
+        run: npx tsc --noEmit
+      
+      - name: Run tests
+        run: npm test -- --quiet