Add endpoint POST /tenants/{tenant_id}/nextcloud/set-domain that creates
a COMPOSITE task with two steps:
1. NEXTCLOUD_SET_DOMAIN - configures Nextcloud domain via occ commands
2. DOCKER_RELOAD - restarts the Nextcloud stack
Features:
- Auto-resolves first online agent for tenant
- Configurable pull flag for image updates
- Full test coverage (unit + integration tests)
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Co-Authored-By: Claude <noreply@anthropic.com>
Matt
06f58ca18b