Booklore kobo sync fix

[mcmaur]

Hi 👋
I’m running Booklore via LXC on Proxmox created with the Community Scripts installer and ran into an issue with Kobo sync not working (401 Unauthorized).

After debugging with the AI, I found that the nginx reverse proxy on port 6060 does not forward the Authorization header to the backend.
Kobo uses a Bearer token for /api/kobo/*, and without this header Booklore always rejects the request.

Fix: add the following line to the nginx config inside the location /api/ {} block:
proxy_set_header Authorization $http_authorization;

File affected (in my case):
/etc/nginx/nginx.conf

After reloading nginx, Kobo sync worked.

Might be worth adding this to the Booklore LXC install script to avoid confusion for future users.
Happy to provide more details if needed 👍

Can someone do his magic as MR or template/issue or whatever the flow of approval is correct for this project?