Architecture Constraints

Table 1. Technical Constraints
ID	Description
CT-001	Runtime Environment Kubernetes
CT-001	The Target runtime environment is Kubernetes.
CT-002	Publishing Chain
CT-002	The pubishing chain is GitHub (with actions) and the containers and helm charts get published via quay.io.
CT-003	Programming Languages
CT-003	The main programming language is Java. spring-boot will be used as main framework.
CT-004	Nextcloud as Calendar Storage
CT-004	The calendar data is stored in a Nextcloud instance via CalDAV. This way the system is independent of an external service.

Table 2. Organisational Constraints
ID	Description
CO-001	Paladins-Inn
CO-001	The software will be distributed by Paladins-Inn, the non-commercial RPG support branch of Kaiserpfalz EDV-Service.
CO-002	Hexagonal Architecture, ↑DDD-HEXAGONAL
CO-002	The application shall follow a hexagonal (ports-and-adapters) architecture to strictly separate domain logic from infrastructure concerns. All inbound and outbound interactions must go through well-defined ports and adapters, ensuring the core domain has no direct dependencies on frameworks or external services.

Table 3. Political Constraints
ID	Description
CP-001	Non Profit
CP-001	The software is developed without profit. It is provided via LGPL v3.0 or newer.
CP-002	Intellectual Property
CP-002	The TORG franchise is owned by Ulisses Spiele and is licensed for non-profit for Torganized Play to Roland Lichti.