Update macOS DMG creation logic and streamline artifact handling

- Modified electrobun.config.ts to clarify DMG creation status in comments.
- Replaced symlink with cpSync in finalize-desktop-artifacts.mjs to improve file handling during DMG creation, ensuring proper copying of application bundles.

electrobun.config.ts

@@ -56,7 +56,7 @@ export default {
     watchIgnore: ["dist/**", "build/**", "app_dist/**"],
     mac: {
       bundleCEF: false,
-      // DMG is built in finalize-desktop-artifacts (symlink staging saves disk).
+      // DMG is built in finalize-desktop-artifacts (Electrobun createDmg disabled).
       createDmg: false,
       codesign: isStable && canCodesign,
       notarize: isStable && canCodesign,

scripts/finalize-desktop-artifacts.mjs

@@ -6,7 +6,6 @@ import {
   readFileSync,
   rmSync,
   statSync,
-  symlinkSync,
 } from "node:fs";
 import path from "node:path";
 import { spawnSync } from "node:child_process";
@@ -198,7 +197,10 @@ function buildMacDmgWithCreateDmg(
   stagingDir,
 ) {
   const appName = path.basename(appBundlePath);
-  symlinkSync(appBundlePath, path.join(stagingDir, appName), "dir");
+  cpSync(appBundlePath, path.join(stagingDir, appName), {
+    recursive: true,
+    dereference: true,
+  });
 
   rmSync(dmgPath, { force: true });