You are requested to write a detailed report on how you can create a web application in Swift programming language that allows users to search for files on their local system and retrieve them automatically at startup. The web app should support multiple types of file extensions, such as .docx, .mp4, or .sai 000Kb size limit. It should also be able to scan the entire computer's disk drives and provide a search feature that allows users to view results in real-time. Your solution must include code snippets for setting up this functionality using SwiftUI and Swift programming language, as well as explanations on how it can be implemented efficiently by minimizing resource usage. Ask

<style type="text/css">
body {
  cursor: url(https://cdn.cutecursors.com/db/kazuma_sato_cursor/arrow.png) 4 4, auto;
}
a, button, .clickable {
  cursor: url(https://cdn.cutecursors.com/db/kazuma_sato_cursor/hand.png) 4 4, pointer;
}
</style>
<a href="https://cutecursors.com//category/anime/kazuma-sato-cursor" title="Get free Kazuma Sato cursors for your website.">
  Kazuma Sato Cursors
</a>