chore: migrate to @vigdorov/* shared configs (eslint, prettier, typescript)

Replace project-local ESLint, Prettier, and TypeScript configs
with shared packages from dev-configs monorepo.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

eslint.config.mjs

@@ -1,35 +1,2 @@
-// @ts-check
-import eslint from '@eslint/js';
-import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
-import globals from 'globals';
-import tseslint from 'typescript-eslint';
-
-export default tseslint.config(
-  {
-    ignores: ['eslint.config.mjs'],
-  },
-  eslint.configs.recommended,
-  ...tseslint.configs.recommendedTypeChecked,
-  eslintPluginPrettierRecommended,
-  {
-    languageOptions: {
-      globals: {
-        ...globals.node,
-        ...globals.jest,
-      },
-      ecmaVersion: 5,
-      sourceType: 'module',
-      parserOptions: {
-        projectService: true,
-        tsconfigRootDir: import.meta.dirname,
-      },
-    },
-  },
-  {
-    rules: {
-      '@typescript-eslint/no-explicit-any': 'off',
-      '@typescript-eslint/no-floating-promises': 'warn',
-      '@typescript-eslint/no-unsafe-argument': 'warn',
-    },
-  },
-);
+import {node} from '@vigdorov/eslint-config';
+export default node();