## Optimization: Efficient Health Check Query
This PR optimizes the workspace health check system by replacing the N+1
query pattern with efficient database queries.
### Key Improvements
- **Eliminated N+1 Query Problem**: Instead of fetching all workspaces
and then querying each one individually for pending migrations (which
caused slowness in production), we now use a single optimized query to
directly identify workspaces with pending migrations
- **Better Performance**: Reduced the number of database queries from
potentially hundreds/thousands (previous implementation) to just 2 fixed
queries regardless of workspace count
- **Full Coverage Instead of Sampling**: Rather than implementing a cap
on workspace checks at 100 (which was a workaround for performance
issues), this solution addresses the root cause by optimizing the query
pattern. We can now efficiently check all workspaces with pending
migrations without performance penalties.
@FelixMalfait This addresses the "always eager-load when you can"
feedback by handling the problem at the database level rather than just
applying a limit. The optimized query should solve both the performance
issues and provide more accurate health status information.
3960b0f99d