[Library Exporter Advanced] Add "Library" field #772

Pre-Request Checklist

• I have checked and confirmed this is not a duplicate issue
• I have verified that I'm using the latest version of the extension by checking for updates in Playnite
• I have modified the placeholder issue title according to this issue

Extension name

Library Exporter Advanced

Feature Description

Feature Description

Add the native "Library" property (indicating the originating platform or launcher, such as Steam, Epic Games Store, GOG, or Xbox) as a selectable option within the "Fields to export" configuration list.

Usefulness

Users managing and auditing cross-platform game libraries externally frequently need to categorize or filter titles by their source launcher. Without the ability to export the specific library identifier, exported data (such as CSV or text files) lacks vital platform context, requiring manual cross-referencing or workarounds.

Project Enhancement

Integrating the source library field completes the utility's data coverage for multi-launcher setups. This directly supports Playnite's core mission of unifying fragmented gaming platforms by ensuring that exported inventory records retain full traceability across all connected storefronts.

Screenshots or Mockups

No response