Backend Complete: Interface Refactoring & Service Container Enhancements

Repository Interface Optimization:
- Created IBaseRepository.ts and IPaginatedRepository.ts
- Refactored all 7 repository interfaces to extend base interfaces
- Eliminated ~200 lines of redundant code (70% reduction)
- Improved type safety and maintainability

 Dependency Injection Improvements:
- Added EmailService and GameTokenService to DIContainer
- Updated CreateUserCommandHandler constructor for DI
- Updated RequestPasswordResetCommandHandler constructor for DI
- Enhanced testability and service consistency

 Environment Configuration:
- Created comprehensive .env.example with 40+ variables
- Organized into 12 logical sections (Database, Security, Email, etc.)
- Added security guidelines and best practices
- Documented all backend environment requirements

 Documentation:
- Added comprehensive codebase review
- Created refactoring summary report
- Added frontend implementation guide

Impact: Improved code quality, reduced maintenance overhead, enhanced developer experience

SerpentRace_Backend/src/Application/DTOs/OrganizationDto.ts

@@ -0,0 +1,48 @@
+export interface CreateOrganizationDto {
+  name: string;
+  description?: string;
+  maxOrganizationalDecks?: number | null;
+}
+
+export interface UpdateOrganizationDto {
+  id: string;
+  name?: string;
+  description?: string;
+}
+
+export interface ShortOrganizationDto {
+  id: string;
+  name: string;
+  state: number;
+  userinorg: number;
+  maxOrganizationalDecks?: number | null;
+}
+
+export interface DetailOrganizationDto {
+  id: string;
+  name: string;
+  contactfname: string;
+  contactlname: string;
+  contactphone: string;
+  contactemail: string;
+  state: number;
+  regdate: Date;
+  updatedate: Date;
+  url: string | null;
+  userinorg: number;
+  maxOrganizationalDecks: number | null;
+  users: string[];
+}
+
+export interface OrganizationLoginUrlDto {
+  organizationId: string;
+  organizationName: string;
+  loginUrl: string;
+}
+
+export interface OrganizationAuthCallbackDto {
+  organizationId: string;
+  userId: string;
+  status: 'ok' | 'not_ok';
+  authToken?: string;
+}