Function getApiErrorMessage

getApiErrorMessage(error: unknown, fallback?: string): string
Extract a human-readable error message from an API error

Handles multiple error formats:
- JSON-RPC 2.0 with nested TrueNAS data: uses data.reason field
- JSON-RPC 2.0 standard: uses message field
- TrueNAS custom: uses reason field
- Unknown format: returns fallback message
Parameters
- error: unknown
  The error object from API response
- fallback: string = 'API call failed'
  Fallback message if error format is unrecognized
Returns string
Human-readable error message
- Defined in src/types/api-error.type.ts:73