feat: add logging and caching enhancements across core services

Integrate `Logger` for consistent logging in services like `reports`, `categories`, `users`, `contents`, and more. Introduce caching capabilities with `CacheInterceptor` and manual cache clearing logic for categories, users, and contents. Add request throttling to critical auth endpoints for enhanced rate limiting.

backend/src/users/users.controller.ts

@@ -11,7 +11,9 @@ import {
 	Query,
 	Req,
 	UseGuards,
+	UseInterceptors,
 } from "@nestjs/common";
+import { CacheInterceptor, CacheKey, CacheTTL } from "@nestjs/cache-manager";
 import { AuthService } from "../auth/auth.service";
 import { Roles } from "../auth/decorators/roles.decorator";
 import { AuthGuard } from "../auth/guards/auth.guard";
@@ -41,6 +43,8 @@ export class UsersController {
 
 	// Listing public d'un profil
 	@Get("public/:username")
+	@UseInterceptors(CacheInterceptor)
+	@CacheTTL(60000) // 1 minute
 	findPublicProfile(@Param("username") username: string) {
 		return this.usersService.findPublicProfile(username);
 	}

backend/src/users/users.service.ts

@@ -1,4 +1,6 @@
-import { Injectable } from "@nestjs/common";
+import { Injectable, Logger, Inject } from "@nestjs/common";
+import { CACHE_MANAGER } from "@nestjs/cache-manager";
+import { Cache } from "cache-manager";
 import { eq, sql } from "drizzle-orm";
 import { CryptoService } from "../crypto/crypto.service";
 import { DatabaseService } from "../database/database.service";
@@ -11,11 +13,20 @@ import { UpdateUserDto } from "./dto/update-user.dto";
 
 @Injectable()
 export class UsersService {
+	private readonly logger = new Logger(UsersService.name);
+
 	constructor(
 		private readonly databaseService: DatabaseService,
 		private readonly cryptoService: CryptoService,
+		@Inject(CACHE_MANAGER) private cacheManager: Cache,
 	) {}
 
+	private async clearUserCache(username?: string) {
+		if (username) {
+			await this.cacheManager.del(`users/profile/${username}`);
+		}
+	}
+
 	async create(data: {
 		username: string;
 		email: string;
@@ -119,11 +130,17 @@ export class UsersService {
 	}
 
 	async update(uuid: string, data: UpdateUserDto) {
-		return await this.databaseService.db
+		this.logger.log(`Updating user profile for ${uuid}`);
+		const result = await this.databaseService.db
 			.update(users)
 			.set({ ...data, updatedAt: new Date() })
 			.where(eq(users.uuid, uuid))
 			.returning();
+
+		if (result[0]) {
+			await this.clearUserCache(result[0].username);
+		}
+		return result;
 	}
 
 	async updateConsent(