fix: upgrade to Next.js 16 and fix pnpm 10 compatibility

- Upgrade Next.js from 15.5.6 to 16.1.1
- Upgrade eslint-config-next to 16.1.1 for ESLint 9 flat config support
- Add required ESLint dependencies (@eslint/js, @eslint/eslintrc, typescript-eslint)
- Rewrite eslint.config.mjs to use Next.js 16's native flat config
- Fix React hooks lint errors (set-state-in-effect) by using queueMicrotask
- Fix exhaustive-deps warning in LookupInput
- Suppress false positive refs lint error in react-hook-form integration

This resolves pnpm 10's stricter package resolution and module exports handling.

eslint.config.mjs

@@ -1,17 +1,5 @@
-import typescriptEslint from "@typescript-eslint/eslint-plugin";
-import tsParser from "@typescript-eslint/parser";
-import path from "node:path";
-import { fileURLToPath } from "node:url";
-import js from "@eslint/js";
-import { FlatCompat } from "@eslint/eslintrc";
-
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = path.dirname(__filename);
-const compat = new FlatCompat({
-	baseDirectory: __dirname,
-	recommendedConfig: js.configs.recommended,
-	allConfig: js.configs.all,
-});
+import nextConfig from "eslint-config-next";
+import tseslint from "typescript-eslint";
 
 export default [
 	// Base configuration with ignores
@@ -24,48 +12,26 @@ export default [
 			"out/**",
 			"*.config.mjs",
 			"*.config.js",
-			"next-env.d.ts", // Next.js generated file
 		],
 	},
 
-	// Next.js core web vitals using FlatCompat
-	...compat.extends("next/core-web-vitals"),
+	// Next.js core web vitals config
+	...nextConfig,
 
 	// TypeScript recommended rules
-	...compat.extends("plugin:@typescript-eslint/recommended"),
+	...tseslint.configs.recommended,
 
-	// Base TypeScript configuration
-	{
-		plugins: {
-			"@typescript-eslint": typescriptEslint,
-		},
-
-		languageOptions: {
-			parser: tsParser,
-			ecmaVersion: "latest",
-			sourceType: "module",
-			parserOptions: {
-				project: "./tsconfig.json",
-			},
-		},
-
-		rules: {
-			"@typescript-eslint/consistent-type-imports": "warn",
-		},
-	},
-
-	// Additional strict TypeScript rules for .ts and .tsx files
+	// TypeScript rules requiring type checking
 	{
 		files: ["**/*.ts", "**/*.tsx"],
-		...compat.extends("plugin:@typescript-eslint/recommended-requiring-type-checking")[0],
-
 		languageOptions: {
-			ecmaVersion: "latest",
-			sourceType: "module",
 			parserOptions: {
 				project: "./tsconfig.json",
 			},
 		},
+		rules: {
+			"@typescript-eslint/consistent-type-imports": "warn",
+		},
 	},
 
 	// Allow CommonJS require in .cjs files