add Vite Vue 3 TypeScript frontend skeleton.

Minimal home view and dev server on port 5173 for later Docker wiring.

frontend/index.html

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+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <title>Private Image</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": "frontend",
+    "private": true,
+    "version": "0.0.0",
+    "type": "module",
+    "scripts": {
+        "dev": "vite --host 0.0.0.0",
+        "build": "vue-tsc -b && vite build",
+        "preview": "vite preview"
+    },
+    "dependencies": {
+        "vue": "^3.5.32"
+    },
+    "devDependencies": {
+        "@types/node": "^22.10.7",
+        "@vitejs/plugin-vue": "^6.0.5",
+        "@vue/tsconfig": "^0.9.1",
+        "typescript": "~6.0.2",
+        "vite": "^8.0.4",
+        "vue-tsc": "^3.2.6"
+    }
+}

frontend/src/App.vue

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+<template>
+  <main class="home">
+    <h1>Private Image</h1>
+  </main>
+</template>
+
+<style scoped>
+.home {
+  box-sizing: border-box;
+  min-height: 100vh;
+  margin: 0;
+  padding: 2rem;
+  font-family:
+    system-ui,
+    -apple-system,
+    Segoe UI,
+    Roboto,
+    sans-serif;
+  line-height: 1.5;
+}
+
+h1 {
+  margin: 0 0 0.5rem;
+  font-size: 1.75rem;
+  font-weight: 600;
+}
+
+p {
+  margin: 0;
+  color: #444;
+}
+</style>

frontend/src/main.ts

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+import { createApp } from 'vue';
+import App from './App.vue';
+
+createApp(App).mount('#app');

frontend/src/vite-env.d.ts

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

frontend/tsconfig.app.json

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+{
+    "extends": "@vue/tsconfig/tsconfig.dom.json",
+    "compilerOptions": {
+        "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+        "types": ["vite/client"],
+        "paths": {
+            "@/*": ["./src/*"]
+        },
+        "noUnusedLocals": true,
+        "noUnusedParameters": true,
+        "noFallthroughCasesInSwitch": true
+    },
+    "include": ["src/**/*.ts", "src/**/*.tsx", "src/**/*.vue", "src/**/*.d.ts"]
+}

frontend/tsconfig.json

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

frontend/tsconfig.node.json

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+{
+    "compilerOptions": {
+        "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+        "target": "es2023",
+        "lib": ["ES2023"],
+        "module": "esnext",
+        "types": ["node"],
+        "skipLibCheck": true,
+        "moduleResolution": "bundler",
+        "allowImportingTsExtensions": true,
+        "verbatimModuleSyntax": true,
+        "moduleDetection": "force",
+        "noEmit": true,
+        "noUnusedLocals": true,
+        "noUnusedParameters": true,
+        "erasableSyntaxOnly": true,
+        "noFallthroughCasesInSwitch": true
+    },
+    "include": ["vite.config.ts"]
+}

frontend/vite.config.ts

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+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { defineConfig } from 'vite';
+import vue from '@vitejs/plugin-vue';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+export default defineConfig({
+    resolve: {
+        alias: {
+            '@': path.resolve(__dirname, 'src')
+        }
+    },
+    plugins: [vue()],
+    server: {
+        port: 5173
+    }
+});