Remove rimraf dependency, use built-in fs instead

[Copilot]

scripts/reset.js depended on rimraf (a transitive dep, never declared directly) to delete the dist folder. Replaced with Node.js built-in fs.

Changes

• scripts/reset.js: replaced async rimraf(dir, cb) with fs.rmSync(dir, { recursive: true, force: true })
• Used fs.mkdirSync(dir, { recursive: true }) instead of bare mkdirSync for robustness when dir already exists

// Before
const rimraf = require("rimraf");
rimraf(outputDirectory, function () {
  fs.mkdirSync(outputDirectory);
});

// After
fs.rmSync(outputDirectory, { recursive: true, force: true });
fs.mkdirSync(outputDirectory, { recursive: true });