feat: harden sessions and track downstream acknowledgements

api/src/auth/auth.module.ts

@@ -1,11 +1,20 @@
 import { Module } from '@nestjs/common';
+import { APP_GUARD } from '@nestjs/core';
 import { UsersModule } from '../users/users.module';
 import { AuthController } from './auth.controller';
 import { AuthService } from './auth.service';
+import { RecentAuthenticationGuard } from './recent-authentication.guard';
+import { SessionService } from './session.service';
 
 @Module({
   imports: [UsersModule],
   controllers: [AuthController],
-  providers: [AuthService],
+  providers: [
+    AuthService,
+    SessionService,
+    RecentAuthenticationGuard,
+    { provide: APP_GUARD, useExisting: RecentAuthenticationGuard },
+  ],
+  exports: [SessionService],
 })
 export class AuthModule {}