Manual Nextcloud upload tudi nastavi hidden_after_upload=True

User: 'naredi da ko damo IN sejvamo na nextcloud da izgine iz pregleda
in se vrne če stisnemo Pokaži že naložene'

Bug: 2 mesti uploadamo na Nextcloud:
1. Avto-upload po recut/Save → hidden_after_upload=True ✅
2. Manual ☁ Nextcloud klik → samo nextcloud_status='uploaded' ❌

Fix: oba puta nastavi hidden_after_upload=True

Tudi: batch fix obstoječih 19 uploaded jobs ki niso imeli hidden flag,
posredno preko docker exec — zdaj se skrijejo tudi oni.

Workflow zdaj:
- ☁ Nextcloud klik → upload + hidden=true → izgine
- Save (Edit) → re-render + auto-upload + hidden=true → izgine
- ☐→☑ 'Pokaži tudi že naložene' → vidiš vse z zelenim borderjem

app/main.py

@@ -1803,7 +1803,13 @@ async def upload_nextcloud(job_id: str, user: str = Depends(check_auth)):
     success, result = _nextcloud_upload(output_path, download_name, target_subdir=target_subdir)
     
     if success:
-        update_job(job_id, nextcloud_status="uploaded", nextcloud_url=result, nextcloud_error=None)
+        update_job(
+            job_id,
+            nextcloud_status="uploaded",
+            nextcloud_url=result,
+            nextcloud_error=None,
+            hidden_after_upload=True,  # skrij iz default UI prikaza (toggle za pokaz)
+        )
         print(f"☁️ Upload OK: /{target_subdir}/{download_name}", flush=True)
         # Zabeleži v dedup
         try: