Release v1.4.9 with extraction resume fix and faster update downloads

- Fix extraction status display after restart (shows "Entpacken ausstehend" instead of stale status)
- Fix Start button to trigger pending extractions for already-downloaded packages
- Fix extraction resume when archives already cleaned (recognizes completed state from resume file)
- Reduce update download connection timeout from 8min to 30s per candidate for faster fallback
- Add logging for update download candidates and failures
- Show manual download URL on update failure
- Sequential extraction preserved (one package at a time via queue)
- Extraction properly cancelled on shutdown, resumes on restart

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "real-debrid-downloader",
-  "version": "1.4.8",
+  "version": "1.4.9",
   "description": "Real-Debrid Downloader Desktop (Electron + React + TypeScript)",
   "main": "build/main/main/main.js",
   "author": "Sucukdeluxe",