[Bug report] add extra pages seems to have no effect

[yzqdev]

Description

use extra page or client config to define a route not working

use extra pages

https://v2.vuepress.vuejs.org/advanced/cookbook/adding-extra-pages.html

use plugin api to create a extra page /hello, and it's not found when in dev and production
helloPlugins.ts

import { createPage, type Page, type PluginFunction } from "vuepress/core";
export const helloPlugin =
  (options?:any): PluginFunction =>
  (app) => {
    console.log("hello");
    return {
      name: "hello",
      async onInitialized(app) {
        const helloPage = await createPage(app, {
          path: "/hello",
          frontmatter: { title: "hello" },
        
          content: `\
# 欢迎来到 ${app.options.title}

这是 hello
`,
        });
        app.pages.push(helloPage);
        console.log(app.pages);
      },
    };
  };

register in config.ts

export default defineUserConfig({
  plugins: [
    helloPlugin(),
  
  ],
})

A /hello route is expected, but it is 404 link
reproduction repo repo

use vue-router

https://v2.vuepress.vuejs.org/advanced/cookbook/usage-of-client-config.html
use client config to add a route
this client.ts file

import Hello from './component/Hello.vue';
export default defineClientConfig({
  enhance({ app, router, siteData }) {
    app.component("Hello", Hello);
    router.addRoute({
      path: "/hi",
      name: "hi",
      component: Hello,
    });
  },
})

Hello.vue

<template>
  <div>
<p>hello</p>
  </div>
</template>

<script setup lang="ts">
  
</script>

<style scoped>

</style>

additional info

I see the .vuepress/.temp/pages folder has a hello.html.vue file, it's content is very well ,while in /hello route ,it's not found.

I remembered when vuepress was beta ,the second solution works well.

Reproduction

https://github.com/yzqbugs/vuepress-bugs

Used Package Manager

yarn

System Info

System:
    OS: Windows 10 10.0.19045
    CPU: (8) x64 AMD Ryzen 5 3400G with Radeon Vega Graphics
    Memory: 10.77 GB / 31.95 GB
  Binaries:
    Node: 22.0.0 - ~\AppData\Local\Temp\xfs-9423c53a\node.CMD
    Yarn: 4.1.1 - ~\AppData\Local\Temp\xfs-9423c53a\yarn.CMD
    npm: 10.5.1 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.0.6 - D:\scoop\shims\pnpm.EXE
    bun: 1.1.4 - D:\scoop\shims\bun.EXE
  Utilities:
    Git: 2.43.0.
  Browsers:
    Chrome: Not Found
    Edge: Chromium (123.0.2420.97), ChromiumDev (123.0.2420.10)
  npmPackages:
    @vuepress/bundler-vite: ^2.0.0-rc.9 => 2.0.0-rc.9
    @vuepress/bundler-webpack: Not Found
    @vuepress/cli:  2.0.0-rc.9
    @vuepress/client:  2.0.0-rc.9
    @vuepress/core:  2.0.0-rc.9
    @vuepress/markdown:  2.0.0-rc.9
    @vuepress/shared:  2.0.0-rc.9
    @vuepress/utils:  2.0.0-rc.9
    vue:  3.4.25
    vue-router:  4.3.2
    vuepress: next => 2.0.0-rc.9

[Mister-Hope]

/hello.html

[yzqdev]

/hello.html

It works for extra page, thank you.

[yzqdev]

common usage (2.0.0-rc.2)

I just downgrade vuepress to 2.0.0-rc.2 the function router.addRoute to add a route works.
while update to 2.0.0-rc3 the added route is not found

repo

client.ts

export default defineClientConfig({
  enhance({ app, router, siteData }) {
    app.component("Hello", Hello);
    router.addRoute({
      path: "/hi",
      name: "hi",
      component: Hello,
    });
  },
});

the router.addRoute added page (vuepress version 2.0.0-rc.2)
https://yzqbugs.github.io/vuepress-bugs/hi

the #1447 custom routes pr seems to break common usage

the reproduction repo (2.0.0-rc3)

https://stackblitz.com/edit/vuepress-ccylja?file=docs%2F.vuepress%2Fclient.ts,docs%2F.vuepress%2FHello.vue,docs%2FREADME.md

click the to hi page button , /hi not found

[Mister-Hope]

Again, /hi.html, if you need these clean urls, then you must override resolveRoutePath to pervent it being normalized to /hi.html

[Mister-Hope]

cc @meteorlxy Maybe we should add extra check with a clean URL edition when the original route path not found.