After the tag fix (#737) the dev deploy builds and pushes the image
fine but fails at `docker compose up -d` with:
Conflict. The container name "/mokogitea-dev" is already in use
The dev service uses a fixed container_name, and the symlinked
/opt/gitea-dev path makes compose's derived project name unstable, so
an existing container is not recognized as the project's and `up`
tries to create rather than recreate. Remove any lingering
fixed-name container first, pin the compose project name, and force a
fresh recreate so migrations run against the new image.
Claude-Session: https://claude.ai/code/session_01Wsno14cxE49MstXFs9G5KT
jmiller