GitHub deletes Slack, Teams repo subscriptions

Feature flag rollouts should fail-safe and degrade gracefully rather than permanently destroying user configuration data.

* **Cascading Failure Path:** A temporary authorization failure caused by a feature flag should never trigger permanent unsubscription/deletion events on the database level.

* **Lack of Soft Deletes:** The difficulty in restoring the subscriptions suggests a lack of soft deletes or easily restorable backups for integration metadata.

* **Manual Recovery Burden:** Shifting the remediation effort to the customers to manually re-subscribe channels highlights a gap in automated recovery or state-sync tools for these chat applications.