Improve mobile billing receipt layout

Make payment history and tax details easier to scan on narrow screens.

Add usage alert threshold settings

Notify account owners before they cross plan or seat limits.

Ship saved replies for support macros

Allow support teams to create, share, and apply reusable customer replies.

Backfill activity timeline events

Restore missing audit events for imports created before the new timeline schema.

Review release checklist empty states

Verify that release checklist states are helpful when teams have no blockers.