Bonus points table does not reflect issue title updates and shows old titles instead of renamed ones

The bonus_points table currently stores the reason as a string. Since we recently updated it to show the issue title instead of the issue link, two problems have emerged:

1. Newly created entries display the latest format (issue titles), while older entries still show the legacy data.
2. When an issue title is renamed, the change is not reflected here—unlike in the create_issue table—because there is no synchronisation logic or trigger mechanism in place.

Discussion Points

We should decide whether to:

• Perform a one-time migration to update existing bonus_points entries from issue URLs to titles, or
• Implement a dynamic solution that keeps issue titles in sync when they are renamed in the source table.

Recreation steps

1. Create a bonus point entry for an issue.
2. Observe how the bonus_points entry logs the issue title in the reason column.
3. Rename the issue title.
4. Check whether the title change is reflected in the bonus_points table.

Implementation plan

To Do

Related Discussion

See #226 (closed)

/cc @leetickett-gitlab