fix: lint warnings and update ESLint config

docusaurus.config.ts

@@ -1,8 +1,6 @@
 import { themes as prismThemes } from "prism-react-renderer";
 import type { Config } from "@docusaurus/types";
 import type * as Preset from "@docusaurus/preset-classic";
-import remarkMath from "remark-math";
-import rehypeKatex from "rehype-katex";
 import * as dotenv from "dotenv";
 dotenv.config();
 

eslint.config.mjs

@@ -0,0 +1,47 @@
+// eslint.config.mjs
+import tsParser from "@typescript-eslint/parser";
+import tsPlugin from "@typescript-eslint/eslint-plugin";
+import reactPlugin from "eslint-plugin-react";
+
+export default [
+  {
+    files: ["**/*.{ts,tsx}"],
+    ignores: ["node_modules/", "build/", ".docusaurus/", "static/", "dist/"],
+    languageOptions: {
+      parser: tsParser,
+      parserOptions: {
+        ecmaVersion: 2021,
+        sourceType: "module",
+        ecmaFeatures: { jsx: true },
+      },
+      globals: {
+        React: "readonly",
+        window: "readonly",
+        document: "readonly",
+      },
+    },
+    plugins: {
+      "@typescript-eslint": tsPlugin,
+      react: reactPlugin,
+    },
+    rules: {
+      "react/react-in-jsx-scope": "off",
+      "no-console": "off",
+      "@typescript-eslint/no-unused-vars": "warn",
+      "@typescript-eslint/no-explicit-any": "warn",
+    },
+  },
+  {
+    files: ["**/*.{js,jsx}"],
+    ignores: ["node_modules/", "build/", ".docusaurus/", "static/", "dist/"],
+    languageOptions: {
+      globals: {
+        window: "readonly",
+        document: "readonly",
+      },
+    },
+    rules: {
+      "no-console": "off",
+    },
+  },
+];