M3: console.log -> Logger + UI redesign (QuestionBank) + S7/A9/A10/A11/U11 bug fixes + #1/#2/#3/#4 enhancements + i18n for QuestionBank pages

server/src/auth/combined-auth.guard.ts

@@ -3,6 +3,7 @@ import {
   CanActivate,
   ExecutionContext,
   UnauthorizedException,
+  Logger,
 } from '@nestjs/common';
 import { Reflector } from '@nestjs/core';
 import { AuthGuard } from '@nestjs/passport';
@@ -25,6 +26,8 @@ import * as path from 'path';
  */
 @Injectable()
 export class CombinedAuthGuard implements CanActivate {
+  private readonly logger = new Logger(CombinedAuthGuard.name);
+
   // We extend AuthGuard('jwt') functionality by composition
   private jwtGuard: ReturnType<typeof AuthGuard>;
 
@@ -55,7 +58,7 @@ export class CombinedAuthGuard implements CanActivate {
       return true;
     }
 
-    console.log(
+    this.logger.log(
       `[CombinedAuthGuard] Checking auth for route: ${request.method} ${request.url}`,
     );
 
@@ -160,7 +163,7 @@ export class CombinedAuthGuard implements CanActivate {
       }
       return false;
     } catch (e) {
-      console.error(`[CombinedAuthGuard] JWT Auth Error:`, e);
+      this.logger.error('[CombinedAuthGuard] JWT Auth Error: ' + e);
       throw e instanceof UnauthorizedException
         ? e
         : new UnauthorizedException('Authentication required');