Further refactoring

eslint.config.js

@@ -0,0 +1,54 @@
+// @ts-check
+import tseslint from "@typescript-eslint/eslint-plugin";
+import tsparser from "@typescript-eslint/parser";
+
+export default [
+  {
+    files: ["src/**/*.ts", "src/**/*.tsx"],
+    languageOptions: {
+      parser: tsparser,
+      parserOptions: {
+        ecmaVersion: "latest",
+        sourceType: "module",
+      },
+    },
+    plugins: {
+      "@typescript-eslint": tseslint,
+    },
+    rules: {
+      // TypeScript recommended rules (subset)
+      "@typescript-eslint/no-explicit-any": "warn", // Warn, not error for gradual migration
+      "@typescript-eslint/no-unused-vars": [
+        "error",
+        { 
+          argsIgnorePattern: "^_",
+          varsIgnorePattern: "^_",
+        },
+      ],
+      "@typescript-eslint/explicit-function-return-type": "off",
+      "@typescript-eslint/no-non-null-assertion": "warn",
+      
+      // General code quality
+      "no-console": "off", // Game dev needs console
+      "prefer-const": "error",
+      "no-var": "error",
+    },
+  },
+  {
+    files: ["src/**/*.test.ts", "src/**/__tests__/**/*.ts"],
+    rules: {
+      // More lenient for tests
+      "@typescript-eslint/no-explicit-any": "off",
+      "@typescript-eslint/no-non-null-assertion": "off",
+    },
+  },
+  {
+    ignores: [
+      "node_modules/**",
+      "dist/**",
+      "coverage/**",
+      "*.config.js",
+      "*.config.ts",
+    ],
+  },
+];