feat: add comprehensive CI/CD pipeline

Adds GitHub Actions workflows for CI, maintenance, and releases with multi-platform testing matrix.

eslint.config.js

@@ -0,0 +1,25 @@
+const js = require('@eslint/js');
+const globals = require('globals');
+
+module.exports = [
+    js.configs.recommended,
+    {
+        languageOptions: {
+            ecmaVersion: 2022,
+            sourceType: 'commonjs',
+            globals: {
+                ...globals.node,
+                ...globals.es2022
+            }
+        },
+        rules: {
+            'no-unused-vars': ['error', {
+                argsIgnorePattern: '^_',
+                varsIgnorePattern: '^_',
+                caughtErrorsIgnorePattern: '^_'
+            }],
+            'no-undef': 'error',
+            'eqeqeq': 'warn'
+        }
+    }
+];