feat(core): add application interfaces (repositories + services)

packages/core/src/application/services/auth.service.interface.ts

@@ -0,0 +1,14 @@
+import type { Cookie } from "@/entities/models/cookie.js";
+import type { Session } from "@/entities/models/session.js";
+import type { User } from "@/entities/models/user.js";
+
+export interface IAuthenticationService {
+  generateUserId(): string;
+  hashPassword(password: string): Promise<string>;
+  verifyPassword(hash: string, password: string): Promise<boolean>;
+  validateSession(
+    sessionId: string
+  ): Promise<{ user: User; session: Session }>;
+  createSession(user: User): Promise<{ session: Session; cookie: Cookie }>;
+  invalidateSession(sessionId: string): Promise<{ blankCookie: Cookie }>;
+}