refactor: introduce modern frontend

frontend/.editorconfig

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+[*.{js,jsx,mjs,cjs,ts,tsx,mts,cts,vue,css,scss,sass,less,styl}]
+charset = utf-8
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+end_of_line = lf
+max_line_length = 100

frontend/.gitattributes

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+* text=auto eol=lf

frontend/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+.DS_Store
+dist
+dist-ssr
+coverage
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+*.tsbuildinfo
+
+.eslintcache
+
+# Cypress
+/cypress/videos/
+/cypress/screenshots/
+
+# Vitest
+__screenshots__/
+
+# Vite
+*.timestamp-*-*.mjs

frontend/.oxlintrc.json

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+{
+  "$schema": "./node_modules/oxlint/configuration_schema.json",
+  "plugins": ["eslint", "typescript", "unicorn", "oxc", "vue"],
+  "env": {
+    "browser": true
+  },
+  "categories": {
+    "correctness": "error"
+  }
+}

frontend/README.md

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+# coleaf-frontend
+
+This template should help get you started developing with Vue 3 in Vite.
+
+## Recommended IDE Setup
+
+[VS Code](https://code.visualstudio.com/) + [Vue (Official)](https://marketplace.visualstudio.com/items?itemName=Vue.volar) (and disable Vetur).
+
+## Recommended Browser Setup
+
+- Chromium-based browsers (Chrome, Edge, Brave, etc.):
+  - [Vue.js devtools](https://chromewebstore.google.com/detail/vuejs-devtools/nhdogjmejiglipccpnnnanhbledajbpd)
+  - [Turn on Custom Object Formatter in Chrome DevTools](http://bit.ly/object-formatters)
+- Firefox:
+  - [Vue.js devtools](https://addons.mozilla.org/en-US/firefox/addon/vue-js-devtools/)
+  - [Turn on Custom Object Formatter in Firefox DevTools](https://fxdx.dev/firefox-devtools-custom-object-formatters/)
+
+## Type Support for `.vue` Imports in TS
+
+TypeScript cannot handle type information for `.vue` imports by default, so we replace the `tsc` CLI with `vue-tsc` for type checking. In editors, we need [Volar](https://marketplace.visualstudio.com/items?itemName=Vue.volar) to make the TypeScript language service aware of `.vue` types.
+
+## Customize configuration
+
+See [Vite Configuration Reference](https://vite.dev/config/).
+
+## Project Setup
+
+```sh
+pnpm install
+```
+
+### Compile and Hot-Reload for Development
+
+```sh
+pnpm dev
+```
+
+### Type-Check, Compile and Minify for Production
+
+```sh
+pnpm build
+```
+
+### Lint with [ESLint](https://eslint.org/)
+
+```sh
+pnpm lint
+```

frontend/env.d.ts

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+/// <reference types="vite/client" />

frontend/eslint.config.ts

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+import { globalIgnores } from 'eslint/config'
+import { defineConfigWithVueTs, vueTsConfigs } from '@vue/eslint-config-typescript'
+import pluginVue from 'eslint-plugin-vue'
+import pluginOxlint from 'eslint-plugin-oxlint'
+
+// To allow more languages other than `ts` in `.vue` files, uncomment the following lines:
+// import { configureVueProject } from '@vue/eslint-config-typescript'
+// configureVueProject({ scriptLangs: ['ts', 'tsx'] })
+// More info at https://github.com/vuejs/eslint-config-typescript/#advanced-setup
+
+export default defineConfigWithVueTs(
+  {
+    name: 'app/files-to-lint',
+    files: ['**/*.{vue,ts,mts,tsx}'],
+  },
+
+  globalIgnores(['**/dist/**', '**/dist-ssr/**', '**/coverage/**']),
+
+  ...pluginVue.configs['flat/essential'],
+  vueTsConfigs.recommended,
+
+  ...pluginOxlint.buildFromOxlintConfigFile('.oxlintrc.json'),
+)

frontend/index.html

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+<!DOCTYPE html>
+<html lang="">
+
+<head>
+  <meta charset="UTF-8">
+  <link rel="icon" href="/favicon.ico">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>coconut-leaf</title>
+</head>
+
+<body>
+  <div id="app"></div>
+  <script type="module" src="/src/main.ts"></script>
+</body>
+
+</html>

frontend/package.json

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+{
+  "name": "coleaf-frontend",
+  "version": "2.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "run-p type-check \"build-only {@}\" --",
+    "preview": "vite preview",
+    "build-only": "vite build",
+    "type-check": "vue-tsc --build",
+    "lint": "run-s lint:*",
+    "lint:oxlint": "oxlint . --fix",
+    "lint:eslint": "eslint . --fix --cache"
+  },
+  "dependencies": {
+    "@fortawesome/fontawesome-free": "^7.2.0",
+    "@fortawesome/vue-fontawesome": "^3.2.0",
+    "bulma": "^1.0.4",
+    "pinia": "^3.0.4",
+    "vue": "^3.5.32",
+    "vue-router": "^5.0.4"
+  },
+  "devDependencies": {
+    "@tsconfig/node24": "^24.0.4",
+    "@types/node": "^24.12.2",
+    "@vitejs/plugin-vue": "^6.0.6",
+    "@vue/eslint-config-typescript": "^14.7.0",
+    "@vue/tsconfig": "^0.9.1",
+    "eslint": "^10.2.1",
+    "eslint-plugin-oxlint": "~1.60.0",
+    "eslint-plugin-vue": "~10.8.0",
+    "jiti": "^2.6.1",
+    "npm-run-all2": "^8.0.4",
+    "oxlint": "~1.60.0",
+    "typescript": "~6.0.0",
+    "vite": "^8.0.8",
+    "vite-plugin-vue-devtools": "^8.1.1",
+    "vue-tsc": "^3.2.6"
+  },
+  "engines": {
+    "node": "^20.19.0 || >=22.12.0"
+  }
+}

frontend/src/App.vue

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+<script setup lang="ts"></script>
+
+<template>
+    <nav class="navbar has-shadow is-spaced bd-navbar" role="navigation" aria-label="main navigation">
+      <div class="navbar-brand">
+        <router-link class="navbar-item" to="/">
+          <img src="/public/favicon.ico"><b style="margin:0 0 0 14px;">coconut-leaf</b>
+        </router-link>
+
+        <a role="button" class="navbar-burger burger" aria-label="menu" aria-expanded="false"
+          data-target="coleaf-navbar">
+          <span aria-hidden="true"></span>
+          <span aria-hidden="true"></span>
+          <span aria-hidden="true"></span>
+        </a>
+      </div>
+
+      <div id="coleaf-navbar" class="navbar-menu">
+        <div class="navbar-start">
+          <router-link class="navbar-item" to="/home">Home</router-link>
+          <router-link class="navbar-item" to="/collection">Collection</router-link>
+          <router-link class="navbar-item" to="/calendar">Calendar</router-link>
+          <router-link class="navbar-item" to="/todo">Todo</router-link>
+          <router-link class="navbar-item" to="/admin">Admin</router-link>
+        </div>
+
+        <div class="navbar-end">
+          <p class="navbar-item">
+            <a class="button is-primary" href="/login">Login</a>
+          </p>
+          <p class="navbar-item">
+            <a class="button is-primary">Logout</a>
+          </p>
+
+          <div class="navbar-item has-dropdown is-hoverable">
+            <a class="navbar-link"></a>
+            <div class="navbar-dropdown">
+              <a language="en-US" class="navbar-item">English</a>
+              <a language="zh-CN" class="navbar-item">简体中文</a>
+            </div>
+          </div>
+        </div>
+      </div>
+    </nav>
+    <!-- The output result of router -->
+    <router-view></router-view>
+</template>
+
+<style scoped></style>

frontend/src/main.ts

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+import { createApp } from 'vue'
+import { createPinia } from 'pinia'
+
+import App from './App.vue'
+import router from './router'
+
+const app = createApp(App)
+
+app.use(createPinia())
+app.use(router)
+
+app.mount('#app')

frontend/src/router/index.ts

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+import { createRouter, createWebHistory } from 'vue-router'
+
+import Home from '../views/Home.vue'
+import Collection from '@/views/Collection.vue'
+import Calendar from '@/views/Calendar.vue'
+import Todo from '@/views/Todo.vue'
+import Admin from '@/views/Admin.vue'
+
+import Page404 from '@/views/Page404.vue'
+
+const routes = [
+  { path: '/home', component: Home },
+  { path: '/collection', component: Collection },
+  { path: '/calendar', component: Calendar},
+  { path: '/todo', component: Todo},
+  { path: '/admin', component: Admin },
+
+  { path: '/404', component: Page404 },
+
+  { path: '/', redirect: '/home' },
+  { path: '/:pathMatch(.*)*', redirect: '/404' },
+];
+
+const router = createRouter({
+  history: createWebHistory(import.meta.env.BASE_URL),
+  routes: routes,
+});
+
+export default router

frontend/src/stores/counter.ts

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+import { ref, computed } from 'vue'
+import { defineStore } from 'pinia'
+
+export const useCounterStore = defineStore('counter', () => {
+  const count = ref(0)
+  const doubleCount = computed(() => count.value * 2)
+  function increment() {
+    count.value++
+  }
+
+  return { count, doubleCount, increment }
+})

frontend/src/views/Admin.vue

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+<script setup lang="ts"></script>
+
+<template>
+  <h1>Congratulations</h1>
+  <p>This is admin.</p>
+</template>
+
+<style scoped></style>

frontend/src/views/Calendar.vue

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+<script setup lang="ts"></script>
+
+<template>
+  <h1>Congratulations</h1>
+  <p>This is calendar.</p>
+</template>
+
+<style scoped></style>

frontend/src/views/Collection.vue

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+<script setup lang="ts"></script>
+
+<template>
+  <h1>Congratulations</h1>
+  <p>This is collection.</p>
+</template>
+
+<style scoped></style>

frontend/src/views/Home.vue

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+<script setup lang="ts"></script>
+
+<template>
+  <h1>Congratulations</h1>
+  <p>This is home.</p>
+</template>
+
+<style scoped></style>

frontend/src/views/Page404.vue

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+<script setup lang="ts"></script>
+
+<template>
+  <h1>Congratulations</h1>
+  <p>404 Not Found</p>
+</template>
+
+<style scoped></style>

frontend/src/views/Todo.vue

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+<script setup lang="ts"></script>
+
+<template>
+  <h1>Congratulations</h1>
+  <p>This is todo.</p>
+</template>
+
+<style scoped></style>

frontend/tsconfig.app.json

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+{
+  "extends": "@vue/tsconfig/tsconfig.dom.json",
+  "include": ["env.d.ts", "src/**/*", "src/**/*.vue"],
+  "exclude": ["src/**/__tests__/*"],
+  "compilerOptions": {
+    // Extra safety for array and object lookups, but may have false positives.
+    "noUncheckedIndexedAccess": true,
+
+    // Path mapping for cleaner imports.
+    "paths": {
+      "@/*": ["./src/*"]
+    },
+
+    // `vue-tsc --build` produces a .tsbuildinfo file for incremental type-checking.
+    // Specified here to keep it out of the root directory.
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo"
+  }
+}

frontend/tsconfig.json

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+{
+  "files": [],
+  "references": [
+    {
+      "path": "./tsconfig.node.json"
+    },
+    {
+      "path": "./tsconfig.app.json"
+    }
+  ]
+}

frontend/tsconfig.node.json

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+// TSConfig for modules that run in Node.js environment via either transpilation or type-stripping.
+{
+  "extends": "@tsconfig/node24/tsconfig.json",
+  "include": [
+    "vite.config.*",
+    "vitest.config.*",
+    "cypress.config.*",
+    "playwright.config.*",
+    "eslint.config.*"
+  ],
+  "compilerOptions": {
+    // Most tools use transpilation instead of Node.js's native type-stripping.
+    // Bundler mode provides a smoother developer experience.
+    "module": "preserve",
+    "moduleResolution": "bundler",
+
+    // Include Node.js types and avoid accidentally including other `@types/*` packages.
+    "types": ["node"],
+
+    // Disable emitting output during `vue-tsc --build`, which is used for type-checking only.
+    "noEmit": true,
+
+    // `vue-tsc --build` produces a .tsbuildinfo file for incremental type-checking.
+    // Specified here to keep it out of the root directory.
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo"
+  }
+}

frontend/vite.config.ts

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+import { fileURLToPath, URL } from 'node:url'
+
+import { defineConfig } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import vueDevTools from 'vite-plugin-vue-devtools'
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [
+    vue(),
+    vueDevTools(),
+  ],
+  resolve: {
+    alias: {
+      '@': fileURLToPath(new URL('./src', import.meta.url))
+    },
+  },
+})