* feat(bpmn): give BPMN import/export/document refusals stable error codes
Studio has to recognise a BPMN import/export refusal, and extract capability
names and element ids, by matching the server's message text, so any rewording
silently degrades it to a generic error. Add BpmnErrorCodes with a stable code
per refusal (capability-unsupported, binding-invalid, export not-imported/
source-stale/source-version-unknown, and the document PUT's not-found and
precondition codes), sent through an additive BpmnErrorResponse envelope that
keeps today's statusCode/message/errors shape unchanged and adds code/data
alongside it, since FastEndpoints' own error response has no way to surface a
ValidationFailure's error code in this deployment's configuration. Rename the
Import/Export exception cascades to *ErrorResponses to say what they now do.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
* refactor(bpmn): fold BpmnErrorResponseFactory and BpmnErrorResponseSender into BpmnErrorResponse
Both were thin, single-purpose wrappers around BpmnErrorResponse used only by
the import/export error mapping and one endpoint — a Middle Man chain. Create
and SendAsync now live as static members on BpmnErrorResponse itself; call
sites are unchanged otherwise, and the wire output is byte-identical.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
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