Remove dev profile configuration from shared application.properties

[annikaholmqvist94]

Background

spring.profiles.active=dev is currently hard-coded in the shared application.properties, which means the dev profile is activated automatically in all environments. This is fine for local testing but should be cleaned up before the project is finalized.

Tasks

• Remove spring.profiles.active=dev from src/main/resources/application.properties
• Remove or archive src/main/resources/application-dev.properties (local dev config with PostgreSQL/MinIO endpoints)
• Ensure the active profile is set externally per environment (e.g. via SPRING_PROFILES_ACTIVE env var or --spring.profiles.active launch argument)
• Update any README/documentation to describe how to run the app locally after this change

[annikaholmqvist94]

vid deploy är:

1. Skapa en application-prod.properties med prod-konfiguration (riktig databas-URL, riktig JWT-secret, inga dev-shortcuts)
2. Sätta miljövariabeln SPRING_PROFILES_ACTIVE=prod i deploy-miljön