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/publish-desktop-update.sh

@@ -8,6 +8,7 @@ UPDATES_SRC="${UPDATES_SRC:-$ARTIFACT_DIR/updates}"
 UPDATES_DIR="${UPDATES_DIR:-${WORK_TREE:-$ROOT}/frontend/public/desktop/updates}"
 WEB_STATIC_DIR="${WEB_STATIC_DIR:-$UPDATES_DIR}"
 BASE_URL="${DESKTOP_UPDATE_BASE_URL:-https://exdev.co.kr/desktop/updates}"
+BASE_URL="${BASE_URL/http:\/\//https:\/\/}"
 DESKTOP_RELEASE_DIR="${GC_DESKTOP_APP_RELEASE_DIR:-$ROOT/data/desktop-releases}"
 KEY_PATH="${TAURI_SIGNER_KEY:-$HOME/.tauri/goldenchart.key}"
 DESKTOP_DIR="$ROOT/desktop"
@@ -64,6 +65,11 @@ fi
 # build-info 복사
 if [[ -f "$BUILD_INFO" ]]; then
   cp -f "$BUILD_INFO" "$PUBLISH_UPDATES/build-info.json"
+  node -e "
+const fs=require('fs'); const p=process.argv[1]; const v=process.argv[2];
+const j=JSON.parse(fs.readFileSync(p,'utf8')); j.version=v;
+fs.writeFileSync(p, JSON.stringify(j,null,2)+'\n');
+" "$PUBLISH_UPDATES/build-info.json" "$VERSION"
 fi
 
 # latest.json