fix: Mac desktop updater — platform-aware errors, HTTPS latest.json

Show Mac-specific update errors on macOS (not Windows message). Force HTTPS
bundle URLs, fix reconcile version from bundle filenames, bump to 0.1.4.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/generate-desktop-latest-json.mjs

@@ -19,7 +19,8 @@ function arg(name, fallback) {
 
 const version = arg('--version', '0.1.0');
 const dir = path.resolve(arg('--dir', 'dist-desktop/updates'));
-const baseUrl = (arg('--base-url', 'https://exdev.co.kr/desktop/updates')).replace(/\/$/, '');
+const rawBaseUrl = arg('--base-url', 'https://exdev.co.kr/desktop/updates');
+const baseUrl = rawBaseUrl.replace(/\/$/, '').replace(/^http:\/\//i, 'https://');
 const notes = arg('--notes', `GoldenChart Desktop ${version}`);
 
 if (!fs.existsSync(dir)) {
@@ -82,13 +83,18 @@ for (const f of files) {
   } else if (lower.endsWith('-setup.exe') || (lower.includes('setup') && lower.endsWith('.exe'))) {
     addPlatform('windows-x86_64', f);
   } else if (lower.endsWith('.app.tar.gz')) {
-    // universal mac fallback
-    if (!platforms['darwin-aarch64']) addPlatform('darwin-aarch64', f);
+    addPlatform('darwin-aarch64', f);
   }
 }
 
+const bundleMaxVersion = Object.values(platforms).reduce(
+  (max, p) => (cmpSemver(p.bundleVersion, max) > 0 ? p.bundleVersion : max),
+  '0.0.0',
+);
+const manifestVersion = cmpSemver(bundleMaxVersion, version) > 0 ? bundleMaxVersion : version;
+
 const manifest = {
-  version,
+  version: manifestVersion,
   notes,
   pub_date: new Date().toISOString(),
   platforms: Object.fromEntries(