new motd

could be fun while install is happening, and to replace our motd with this:

```ts
// @ts-nocheck

import chalk from 'chalk';
import ora from 'ora';
import figlet from 'figlet';

const logo = `
..................................................
..........................-.......................
.......................-===-......................
....................-======-......-...............
.................-=========-...-===-..............
...............============-..-====-..............
..............-=====-.-====-..-====-..............
..............-====-..-====-..-====-..............
..............-====-..-==-....-====-..............
..............-====-..........-====-..............
..............-====-....-==-..-====-..............
..............-====-..-====-..-====-..............
..............-====-..-====-.-=====-..............
..............-====-..-============...............
..............-===-...-=========-.................
...............-......-======-....................
......................-===-.......................
.......................-..........................
..................................................
`;

const spinner = ora({
text: chalk.gray('Spinning up your future...'),
spinner: 'bouncingBall',
}).start();

setTimeout(() => {
spinner.succeed(chalk.green('Welcome to Hyperweb 🕸️'));

console.log(
chalk.cyanBright.bold(
figlet.textSync('Hyperweb', { font: 'Standard', horizontalLayout: 'default' })
)
);

console.log(chalk.cyanBright.bold(logo));
console.log(
chalk.bold.white('\n🚀 Let’s build something legendary.')
);
console.log(chalk.gray('Type ') + chalk.yellow('npm run dev') + chalk.gray(' to get started.\n'));
}, 1800);
```

No file or test is named; first locate the current MOTD and the install entry point in the repository. Compare the existing installation flow with the supplied TypeScript snippet and verify the new welcome output appears during installation without disrupting completion. Done means the MOTD is replaced and the documented npm run dev hint is shown.

索引モデルが issue の本文から書いたものです。