fix(desktop): render popup overlays in packaged builds

Popup pages loaded their scripts as classic <script src> tags, which the
renderer build never bundles, so an installed app rendered only the static
markup: the recording tip stayed at 0:00 with no wave bars and live captions
showed nothing.

- declare popup scripts as modules so the build emits them, and fail
  packaging when a renderer page references an asset that was never produced
- hold popup IPC until the renderer has loaded and re-assert visibility on
  every show, so a popup hidden once still appears next time
- surface popup renderer console and load failures in the main log

💘 Generated with Crush

Assisted-by: Crush:deepseek-v4.1-flash

.forgejo/workflows/portable.yml

@@ -51,6 +51,9 @@ jobs:
       - name: 데스크톱 번들 빌드
         run: npm run build --workspace=@d3ro/desktop
 
+      - name: 데스크톱 렌더러 번들 검증
+        run: node scripts/ci/verify-desktop-renderer-bundles.mjs
+
       - name: 휴대용 ZIP + Scoop 매니페스트 생성
         run: node scripts/ci/build-portable.mjs