feat(health): add Sentry status check to health endpoint

- Integrated Sentry status check functionality in the health controller.
- Updated tests to validate Sentry active/disabled states.
- Improved Sentry initialization with enhanced logging and error handling.

backend/src/health.controller.spec.ts

@@ -1,8 +1,13 @@
 import { CACHE_MANAGER } from "@nestjs/cache-manager";
 import { Test, TestingModule } from "@nestjs/testing";
+import * as Sentry from "@sentry/nestjs";
 import { DatabaseService } from "./database/database.service";
 import { HealthController } from "./health.controller";
 
+jest.mock("@sentry/nestjs", () => ({
+	getClient: jest.fn(),
+}));
+
 describe("HealthController", () => {
 	let controller: HealthController;
 
@@ -37,10 +42,15 @@ describe("HealthController", () => {
 	it("should return ok if database and redis are connected", async () => {
 		mockDb.execute.mockResolvedValue([]);
 		mockCacheManager.set.mockResolvedValue(undefined);
+		(Sentry.getClient as jest.Mock).mockReturnValue({
+			getOptions: () => ({ dsn: "http://dsn" }),
+		});
+
 		const result = await controller.check();
 		expect(result.status).toBe("ok");
 		expect(result.database).toBe("connected");
 		expect(result.redis).toBe("connected");
+		expect(result.sentry).toBe("active");
 	});
 
 	it("should return error if database is disconnected", async () => {
@@ -62,4 +72,19 @@ describe("HealthController", () => {
 		expect(result.redis).toBe("disconnected");
 		expect(result.redisError).toBe("Redis Error");
 	});
+
+	it("should return sentry disabled if client or dsn is missing", async () => {
+		mockDb.execute.mockResolvedValue([]);
+		mockCacheManager.set.mockResolvedValue(undefined);
+		(Sentry.getClient as jest.Mock).mockReturnValue(undefined);
+
+		const result = await controller.check();
+		expect(result.sentry).toBe("disabled");
+
+		(Sentry.getClient as jest.Mock).mockReturnValue({
+			getOptions: () => ({ dsn: undefined }),
+		});
+		const result2 = await controller.check();
+		expect(result2.sentry).toBe("disabled");
+	});
 });