Secure viewer signaling reliability (PR #818)

Release Notes

Summary

Secure viewer sessions could intermittently wait about a minute before connecting, even when the document and viewer appeared ready sooner.

Changes

• Viewer connection signaling now waits until the relay is ready before advertising a peer as available.
• Signaling messages sent while a peer is still connecting are queued and delivered when the connection is ready, instead of being dropped.
• Users opening documents in the secure viewer should see more consistent connection timing without long delays before the session starts.

Impact

Behavior change: secure viewer sessions should connect more reliably and avoid intermittent long waits before viewing begins.

Classification

Bug Fix, Tenant Workflow, UI