- Created `class_diagram_core.drawio` to visualize core domain entities (`Veranstaltung`, `Platz`, `Turnier`, etc.).
- Included relationships and associations between entities such as 1:N and reference mappings.
- Structured diagram to align with Clean Architecture principles for better domain comprehension.
- Introduced `Kernentitaeten_Umbenennung.puml` to document the planned renaming and structural updates to core domain entities.
- Visualized key contexts (`Event Management`, `Billing`, `Competition`, `Registration`, `Actor`) and their relationships.
- Included recommendations for simplification of naming conventions in Clean Architecture.
- Standardized table layouts by aligning column headers and content across all alphabetical sections.
- Improved text organization and adjusted spacing for better readability.
- Retained all existing references and definitions without modifications to their meaning.
