feat(logging): hash IP addresses in logs and Sentry integration

- Implemented IP hashing using SHA256 in logs for enhanced privacy.
- Updated Sentry integration to hash IP addresses before sending events.
- Enhanced `AllExceptionsFilter` and `crawler-detection.middleware` to use hashed IPs in logs and error handling.
- Refined request logging in `auth.service` to include hashed email instead of plain text email.

backend/src/main.ts

@@ -1,3 +1,4 @@
+import { createHash } from "node:crypto";
 import { Logger, ValidationPipe } from "@nestjs/common";
 import { ConfigService } from "@nestjs/config";
 import { NestFactory } from "@nestjs/core";
@@ -24,6 +25,15 @@ async function bootstrap() {
 			tracesSampleRate: 1.0,
 			profilesSampleRate: 1.0,
 			sendDefaultPii: false, // RGPD
+			beforeSend(event) {
+				// Hachage de l'IP utilisateur pour Sentry si elle est présente
+				if (event.user?.ip_address) {
+					event.user.ip_address = createHash("sha256")
+						.update(event.user.ip_address)
+						.digest("hex");
+				}
+				return event;
+			},
 		});
 	}