Recover gracefully from CONCURRENT_MODIFICATION on transitions

Shipped

May 15, 2026 at 8:42 PM UTC

Author

kamo

Commit

238276b

Promotes API error handling to a MortgageApiError class that preserves the backend error code; transition handlers in PipelineSection and the pipeline kanban detect CONCURRENT_MODIFICATION, close the dialog, refresh, and surface an amber translated notice instead of the raw 409.