chore(configs): migrate oxlint→eslint presets, refactor tsconfig

- Replace @robonen/oxlint with @robonen/eslint (composable ESLint flat-config
  presets: base, typescript, vue, vitest, imports, node, stylistic).
- Plugins bundled as deps: typescript-eslint, eslint-plugin-vue,
  @vitest/eslint-plugin, eslint-plugin-import-x, eslint-plugin-n,
  eslint-plugin-unicorn, @stylistic/eslint-plugin.
- @robonen/tsconfig: add base/dom/node/vue configs for composite project refs.

configs/eslint/rules/vue.md

@@ -0,0 +1,30 @@
+# vue preset
+
+## Purpose
+
+Правила для Vue 3 с упором на Composition API и `<script setup>`.
+
+## Key Rules
+
+- `vue/no-export-in-script-setup`.
+- `vue/no-import-compiler-macros`.
+- `vue/define-props-declaration`: type-based.
+- `vue/define-emits-declaration`: type-based.
+- `vue/valid-define-props`, `vue/valid-define-emits`.
+- `vue/no-lifecycle-after-await`.
+
+## Examples
+
+```vue
+<script setup lang="ts">
+const props = defineProps<{ id: string }>();
+const emit = defineEmits<{ change: [value: string] }>();
+</script>
+
+<!-- ❌ Bad -->
+<script setup lang="ts">
+import { defineProps } from 'vue';
+export const x = 1;
+const props = defineProps({ id: String });
+</script>
+```