Refactor entity factories to use factory functions

[VPS-Obi]

Problem

Entity creation in the codebase was using conditional logic at the module level to create different entity classes based on configuration (e.g., with or without scope). This pattern made it difficult to:

1. Define relations between entities that reference each other, since the entity class wasn't available until after the conditional block
2. Maintain consistent entity creation patterns across different entity types
3. Pass entity classes as dependencies to services that need them

Solution

Refactor entity creation to use factory functions that encapsulate the conditional logic and return the concrete entity class. This allows:

1. Relations to be defined after entity creation using the returned class reference
2. Entity classes to be injected as dependencies via NestJS providers
3. Consistent patterns across createFileEntity, createFolderEntity, createPageTreeNodeEntity, and createPageTreeNodeFullTextEntity

Key changes:

• File entity: Wrapped conditional logic in createConcreteFileEntity(), moved relation definitions to after entity creation using the returned DamFile class
• Folder entity: Wrapped conditional logic in createConcreteFolderEntity(), removed @OneToMany decorator for files relation (now defined in file entity)
• Page tree node entity: Created new createPageTreeNodeEntity() factory function that handles scope and category configuration
• Page tree node full text entity: Created createPageTreeNodeFullTextEntity() factory function to accept PageTreeNode as a parameter
• Module updates: Added entity class providers to DI containers so services can inject entity classes instead of using string references
• Service updates: Updated all entityManager.find/findOneOrFail/findAndCount calls to use entity class references instead of string names

This is a major breaking change for applications that directly extend PageTreeNodeBase — they must now use createPageTreeNodeEntity() instead.

Changeset

See .changeset/cms-api-create-page-tree-node-entity.md for migration guide details.

https://claude.ai/code/session_016mE6dC24agzeytj4aohiLy