- Create 11 entities matching DDL:
- DocumentCategory: Hierarchical categories
- Document: Main document registry
- DocumentVersion: Version control with files
- DocumentPermission: Granular permissions
- ApprovalWorkflow: Workflow definitions
- ApprovalInstance: Active workflow instances
- ApprovalStep: Steps per instance
- ApprovalActionEntity: Actions taken
- Annotation: Comments and markups
- AccessLog: Access history
- DocumentShare: External sharing links
- Create DocumentService with full CRUD
- Create DocumentVersionService for version management
- All entities follow ERP-Construction patterns
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
