Secure viewer document root configuration (PR #817)

Release Notes

Summary

Secure viewer sessions could fail after a document downloaded successfully, preventing users from opening documents in the secure viewer.

Changes

• Viewer pods now receive the configured document root path used for downloaded documents.
• Secure viewer sessions can proceed to document rendering after download instead of terminating with a configuration error.

Impact

No customer action required.

Classification

Bug Fix, UI, Tenant Workflow