Replace eslint-plugin-import with eslint-plugin-import-x

Modern fork with better performance and fewer dependencies.
Updates eslint config to use import-x rules.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

Author: cmdcolin

eslint.config.mjs

@@ -1,7 +1,7 @@
 import eslint from '@eslint/js'
 import eslintPluginUnicorn from 'eslint-plugin-unicorn'
 import { defineConfig } from 'eslint/config'
-import importPlugin from 'eslint-plugin-import'
+import importPlugin from 'eslint-plugin-import-x'
 import tseslint from 'typescript-eslint'
 
 export default defineConfig(
@@ -73,9 +73,9 @@ export default defineConfig(
       '@typescript-eslint/prefer-nullish-coalescing': 'error',
       '@typescript-eslint/no-deprecated': 'warn',
 
-      'import/no-unresolved': 'off',
-      'import/extensions': ['error', 'always', { ignorePackages: true }],
-      'import/order': [
+      'import-x/no-unresolved': 'off',
+      'import-x/extensions': ['error', 'always', { ignorePackages: true }],
+      'import-x/order': [
         'error',
         {
           named: true,

package.json

@@ -59,7 +59,7 @@
     "@vitest/coverage-v8": "^4.1.5",
     "documentation": "^14.0.3",
     "eslint": "^10.2.1",
-    "eslint-plugin-import": "^2.32.0",
+    "eslint-plugin-import-x": "^4.16.2",
     "eslint-plugin-unicorn": "^64.0.0",
     "prettier": "^3.8.3",
     "rimraf": "^6.1.3",