- Added `NennungRepository` with methods for saving, updating status, and retrieving entries.
- Created `NennungController` to expose REST endpoints for Nennungen.
- Defined `NennungTable` schema with relevant fields and indices.
- Extended `MailPollingService` to parse incoming emails into `NennungEntity` and persist them.
- Updated `build.gradle.kts` with database dependencies and H2 configuration for local dev.
- Refined frontend layout in `OnlineNennungFormular` for improved usability and responsiveness.
- Created `MailServiceApplication` with Spring Boot setup.
- Added `MailPollingService` for IMAP polling, `TurnierNr` extraction, and auto-reply functionality.
- Implemented structured email sending for online nominations via `OnlineNennungFormular`.
- Updated frontend with `Erfolgsscreen` for nomination confirmation and fallback handling.
- Added build configurations for Mail-Service and frontend nomination module.
- Documented phase-based roadmap for Online-Nennung and Mail-Service rollout.
