refactor(structure): reorganize app layout

BREAKING CHANGE: root backend/frontend directories and old run/manage entrypoints were removed. Use apps/backend, apps/frontend, and python main.py commands instead.

apps/frontend/eslint.config.js

@@ -0,0 +1,38 @@
+import js from '@eslint/js';
+import pluginVue from 'eslint-plugin-vue';
+import prettierConfig from '@vue/eslint-config-prettier';
+
+export default [
+  {
+    ignores: ['node_modules', 'dist', '*.local'],
+  },
+  js.configs.recommended,
+  ...pluginVue.configs['flat/recommended'],
+  prettierConfig,
+  {
+    languageOptions: {
+      globals: {
+        // 浏览器环境
+        window: 'readonly',
+        document: 'readonly',
+        localStorage: 'readonly',
+        console: 'readonly',
+        setTimeout: 'readonly',
+        clearTimeout: 'readonly',
+        setInterval: 'readonly',
+        clearInterval: 'readonly',
+        navigator: 'readonly',
+        // Node.js 环境（用于配置文件）
+        process: 'readonly',
+        __dirname: 'readonly',
+      },
+    },
+    rules: {
+      'vue/multi-word-component-names': 'off',
+      'vue/no-v-html': 'warn',
+      'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
+      'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
+      'no-unused-vars': 'warn',
+    },
+  },
+];