IAV-1387/feat(admin-workflows): add bulk legal workflow refresh from S3 templates
- Add LegalAgentWorkflowAdminController endpoints to bulk update main, notification, or both workflows for all legal agents.
- Add LegalAgentWorkflowAdminService and BulkWorkflowUpdateResponse for structured per-agent success/failure reporting.
- Extend LegalAgentRepository with workflow-presence selectors for bulk targeting.
- Implement bulk workflow update pipeline in LegalAgentWizardServiceImpl: fetch current workflow, load fresh S3 template, preserve credentials, inject SMTP, filter notification nodes by active channels, and update in n8n with same workflow ID.
- Add admin workflow path constants under Paths.IaviaAgentServiceLegal.Admin.