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/GameDto.ts

@@ -0,0 +1,46 @@
+import *  as DeckAggregate from "../../Domain/Deck/DeckAggregate";
+
+export interface GameStartDto {
+    gameid: string;
+    maxplayers: number;
+    logintype: number;
+    gamecode: string;
+    deck: gamedeck[];
+}
+
+enum decktype {
+    JOCKER = 0,
+    LUCK = 1,
+    QUEST = 2
+}
+
+export interface cards {
+    cardid: string;
+    question?: string;
+    answer?: string;
+    consequence?: DeckAggregate.Consequence | null;
+    played?: boolean;
+    playerid?: string;
+}
+
+export interface gamedeck {
+    deckid: string;
+    decktype: decktype;
+    cards: cards[];
+}
+
+export interface GameDataDto {
+    id: string;
+    gamecode: string;
+    maxplayers: number;
+    logintype: number;
+    gamedecks: gamedeck[];
+    players: string[];
+    started: boolean;
+    finished: boolean;
+    winner?: string;
+    currentplayer?: string;
+    createdate: Date;
+    startdate?: Date;
+    enddate?: Date;
+}