Document scheduled WCX updates

README.md

@@ -761,15 +761,37 @@ Google Cloud Vision does not guarantee this exact structure. Unexpected output i
 
 OCR processing is currently started manually for one movie ID at a time.
 
-## Planned next steps
+## Scheduled updates
 
-Potential next steps include:
+WCX is updated automatically by a systemd timer.
+
+The timer runs every night around 03:30. The wrapper script only performs a
+full update when at least approximately 48 hours have passed since the previous
+successful scheduled run.
+
+Check the timer:
+
+```bash
+systemctl list-timers wcx-update.timer
+```
+
+Follow the service log:
+```bash
+sudo journalctl -u wcx-update.service -f
+```
+Show the latest service output:
+```bash
+sudo journalctl -u wcx-update.service -n 100 --no-pager
+````
+Run the scheduled service manually:
+```bash
+sudo systemctl start wcx-update.service
+```
+Check its status:
+```bash
+systemctl status wcx-update.service --no-pager
+```
+The timestamp of the latest successful scheduled update is stored in:
+
+database/last_scheduled_update
 
-* automatically process movies with `ocr_status = pending`
-* add retry support for failed OCR requests
-* provide commands for manually approving or correcting OCR results
-* add database backup handling
-* export the complete index to JSON or CSV
-* add Emby-compatible metadata export
-* schedule the scraper and import process
-* create an orchestration script for the complete automated workflow