Remove TheWelcome component and its associated assets

frontend/src/components/TheWelcome.vue

-<script setup lang="ts">
-import WelcomeItem from './WelcomeItem.vue'
-import DocumentationIcon from './icons/IconDocumentation.vue'
-import ToolingIcon from './icons/IconTooling.vue'
-import EcosystemIcon from './icons/IconEcosystem.vue'
-import CommunityIcon from './icons/IconCommunity.vue'
-import SupportIcon from './icons/IconSupport.vue'
-
-const openReadmeInEditor = () => fetch('/__open-in-editor?file=README.md')
-</script>
-
-<template>
-    <WelcomeItem>
-        <template #icon>
-            <DocumentationIcon />
-        </template>
-        <template #heading>Documentation</template>
-
-        Vue’s
-        <a href="https://vuejs.org/" target="_blank" rel="noopener">official documentation</a>
-        provides you with all information you need to get started.
-    </WelcomeItem>
-
-    <WelcomeItem>
-        <template #icon>
-            <ToolingIcon />
-        </template>
-        <template #heading>Tooling</template>
-
-        This project is served and bundled with
-        <a href="https://vite.dev/guide/features.html" target="_blank" rel="noopener">Vite</a>. The
-        recommended IDE setup is
-        <a href="https://code.visualstudio.com/" target="_blank" rel="noopener">VSCode</a>
-        +
-        <a href="https://github.com/vuejs/language-tools" target="_blank" rel="noopener"
-            >Vue - Official</a
-        >. If you need to test your components and web pages, check out
-        <a href="https://vitest.dev/" target="_blank" rel="noopener">Vitest</a>
-        and
-        <a href="https://www.cypress.io/" target="_blank" rel="noopener">Cypress</a>
-        /
-        <a href="https://playwright.dev/" target="_blank" rel="noopener">Playwright</a>.
-
-        <br />
-
-        More instructions are available in
-        <a href="javascript:void(0)" @click="openReadmeInEditor"><code>README.md</code></a
-        >.
-    </WelcomeItem>
-
-    <WelcomeItem>
-        <template #icon>
-            <EcosystemIcon />
-        </template>
-        <template #heading>Ecosystem</template>
-
-        Get official tools and libraries for your project:
-        <a href="https://pinia.vuejs.org/" target="_blank" rel="noopener">Pinia</a>,
-        <a href="https://router.vuejs.org/" target="_blank" rel="noopener">Vue Router</a>,
-        <a href="https://test-utils.vuejs.org/" target="_blank" rel="noopener">Vue Test Utils</a>,
-        and
-        <a href="https://github.com/vuejs/devtools" target="_blank" rel="noopener">Vue Dev Tools</a
-        >. If you need more resources, we suggest paying
-        <a href="https://github.com/vuejs/awesome-vue" target="_blank" rel="noopener"
-            >Awesome Vue</a
-        >
-        a visit.
-    </WelcomeItem>
-
-    <WelcomeItem>
-        <template #icon>
-            <CommunityIcon />
-        </template>
-        <template #heading>Community</template>
-
-        Got stuck? Ask your question on
-        <a href="https://chat.vuejs.org" target="_blank" rel="noopener">Vue Land</a>
-        (our official Discord server), or
-        <a href="https://stackoverflow.com/questions/tagged/vue.js" target="_blank" rel="noopener"
-            >StackOverflow</a
-        >. You should also follow the official
-        <a href="https://bsky.app/profile/vuejs.org" target="_blank" rel="noopener">@vuejs.org</a>
-        Bluesky account or the
-        <a href="https://x.com/vuejs" target="_blank" rel="noopener">@vuejs</a>
-        X account for latest news in the Vue world.
-    </WelcomeItem>
-
-    <WelcomeItem>
-        <template #icon>
-            <SupportIcon />
-        </template>
-        <template #heading>Support Vue</template>
-
-        As an independent project, Vue relies on community backing for its sustainability. You can
-        help us by
-        <a href="https://vuejs.org/sponsor/" target="_blank" rel="noopener">becoming a sponsor</a>.
-    </WelcomeItem>
-</template>