JobImportDto was missing Description despite Job entity having the field.
Downloadable template now includes a Description column; the importer maps
it directly to Job.Description with a fallback chain of Description ->
SpecialInstructions -> "Imported job".
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Removes the ShopWorker and ShopWorkerRoleCost entities, all related DTOs,
mappings, controllers, views, and import/export paths. Worker identity is
now handled entirely through ApplicationUser with per-user LaborCostPerHour.
ShopWorkerRoleCosts table remains in production pending manual data migration.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>