Subscription Export Should Respect Selected Table Columns

Problem Statement

Currently, subscription exports include all available columns regardless of the columns selected or displayed in the subscriptions table view. This creates unnecessary noise in exported files and makes it harder for users to export only the data relevant to their workflow.

User Story

As a platform user,
I want subscription exports to include only the columns I selected in the subscriptions table,
So that I can export cleaner, more relevant datasets without unnecessary fields.

Definition of Done (DoD)

• Subscription exports only include columns currently selected/displayed in the table view.

• Hidden/unselected columns are excluded from the export.

• Column ordering in the export matches the table ordering where applicable.

• Existing filters and search criteria continue to apply correctly to exports.

• Export functionality remains supported for CSV and other existing export formats.