consider setting content-disposition header for serveFile

[sigmaSd]

This will allow the downloaded file to have the name of the file instead of a random string

--- a/vendor/jsr.io/@std/http/0.224.5/file_server.ts
+++ b/vendor/jsr.io/@std/http/0.224.5/file_server.ts
@@ -38,6 +38,7 @@ import { join } from "jsr:/@std/path@1.0.0-rc.2/join";
 import { relative } from "jsr:/@std/path@1.0.0-rc.2/relative";
 import { resolve } from "jsr:/@std/path@1.0.0-rc.2/resolve";
 import { SEPARATOR_PATTERN } from "jsr:/@std/path@1.0.0-rc.2/constants";
+import { basename } from "jsr:/@std/path@1.0.0-rc.2/basename";
 import { contentType } from "jsr:/@std/media-types@^1.0.0-rc.1/content-type";
 import { calculate, ifNoneMatch } from "./etag.ts";
 import {
@@ -232,6 +233,14 @@ export async function serveFile(
     headers.set("content-type", contentTypeValue);
   }
 
+  // Suggest original filename for downloads
+  const filename = basename(filePath);
+  const encodedFilename = encodeURIComponent(filename);
+  headers.set(
+    "content-disposition",
+    `attachment; filename*=UTF-8''${encodedFilename}`,
+  );
+
   const fileSize = fileInfo.size;
 
   const rangeValue = req.headers.get("range");