v2.2.1: frontend closed-source + Docker one-click deploy

- Remove frontend source code (now in private repo)
- Add pre-built frontend/dist/ with Nginx serving
- Simplify docker-compose.yml (no Node.js build needed)
- Update README with docs index and Docker deploy guide
- Add admin order list and AI analysis stats tabs
- Add quick trade API routes
- Clean up redundant files (package-lock.json, yarn.lock, .iml)
- Add GitHub Actions workflow for frontend update automation

quantdinger_vue/.eslintrc.js

@@ -1,75 +0,0 @@
-module.exports = {
-  root: true,
-  env: {
-    node: true
-  },
-  'extends': [
-    'plugin:vue/strongly-recommended',
-    '@vue/standard'
-  ],
-  rules: {
-    'no-console': 'off',
-    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
-    'generator-star-spacing': 'off',
-    'no-mixed-operators': 0,
-    'vue/max-attributes-per-line': [
-      2,
-      {
-        'singleline': 5,
-        'multiline': {
-          'max': 1,
-          'allowFirstLine': false
-        }
-      }
-    ],
-    'vue/attribute-hyphenation': 0,
-    'vue/html-self-closing': 0,
-    'vue/component-name-in-template-casing': 0,
-    'vue/html-closing-bracket-spacing': 0,
-    'vue/singleline-html-element-content-newline': 0,
-    'vue/no-unused-components': 0,
-    'vue/multiline-html-element-content-newline': 0,
-    'vue/no-use-v-if-with-v-for': 0,
-    'vue/html-closing-bracket-newline': 0,
-    'vue/no-parsing-error': 0,
-    'no-tabs': 0,
-    'quotes': [
-      2,
-      'single',
-      {
-        'avoidEscape': true,
-        'allowTemplateLiterals': true
-      }
-    ],
-    'semi': [
-      2,
-      'never',
-      {
-        'beforeStatementContinuationChars': 'never'
-      }
-    ],
-    'no-delete-var': 2,
-    'prefer-const': [
-      2,
-      {
-        'ignoreReadBeforeAssign': false
-      }
-    ],
-    'template-curly-spacing': 'off',
-    'indent': 'off'
-  },
-  parserOptions: {
-    parser: 'babel-eslint'
-  },
-  overrides: [
-    {
-      files: [
-        '**/__tests__/*.{j,t}s?(x)',
-        '**/tests/unit/**/*.spec.{j,t}s?(x)'
-      ],
-      env: {
-        jest: true
-      }
-    }
-  ]
-}