Introduced PartnerDepotDbTable for managing PartnerDepot entities, registered it in DI, and integrated it into FruitBankDbContext. Updated NameCompatibility and PartnerDbTable for proper mapping and relation loading. Added SignalR controller endpoints for PartnerDepot CRUD and queries.
Comprehensively renamed all "Preorder" domain types, services, controllers, models, enums, database contexts, routes, views, JS, localization resources, and documentation to "PreOrder" (PascalCase, capital "O"). Updated all references in backend, frontend, localization, and schema docs for consistency. No business logic changes; this is a naming and normalization refactor.