## Summary
- **Drop the `objectMetadata.dataSourceId` foreign key and index** via a
1-22 fast instance command — column kept nullable for data preservation
- **Delete `DataSourceService`, `DataSourceModule`, and
`DataSourceException`** — all code now uses `workspace.databaseSchema`
directly
- **Remove `IS_DATASOURCE_MIGRATED` feature flag** from default flags
and all branching logic
- **Simplify workspace/object creation pipelines** —
`WorkspaceManagerService`, `DevSeederService`, and the object creation
action handler no longer route through `DataSourceService`
- **Keep `DataSourceEntity` and the `dataSource` table** for historical
data — entity stripped of all ORM relations
# Introduction
Currently preparing the `UpgradeCommand` refactor, in this way started
by cleaning up the existing avoiding unecessary dependencies to others
services allowing easier readability and concern centralization for
upcoming refactor
The UpgradeCommand was extending up to five classes, overriding
abstracted class and so on. It was also cascade
injecting 3 services
Introducing the `WorkspaceIteratorService` that centralize the commands
set to run over a single workspace logic shared between both atomic
upgrade command call and global upgradeCommand
## Tradeoff
Duplicated `@Option` between both `UpgradeCommandRunner` and
`WorkspaceMigrationRunner`
## Before
```
UpgradeCommand
└─ extends UpgradeCommandRunner
└─ extends ActiveOrSuspendedWorkspacesMigrationCommandRunner
└─ extends WorkspacesMigrationCommandRunner (owns workspace iteration loop + ORM deps)
└─ extends MigrationCommandRunner (dry-run, verbose, error handling)
└─ extends CommandRunner (nest-commander)
```
## Now
```
UpgradeCommand
└─ extends UpgradeCommandRunner
└─ extends CommandRunner (nest-commander)
uses ─► Services (via composition)
```
## Logging management
At the moment all services are logging, in the best of the world only
the runners should be doing so
Charles Bochet