Building the start of Automation page and implemented BullMQ module

backend/src/services/automation/sessionCleanup.js

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+const { prisma } = require("./shared/prisma");
+const { cleanup_expired_sessions } = require("../../utils/session_manager");
+
+/**
+ * Session Cleanup Automation
+ * Cleans up expired user sessions
+ */
+class SessionCleanup {
+	constructor(queueManager) {
+		this.queueManager = queueManager;
+		this.queueName = "session-cleanup";
+	}
+
+	/**
+	 * Process session cleanup job
+	 */
+	async process(job) {
+		const startTime = Date.now();
+		console.log("🧹 Starting session cleanup...");
+
+		try {
+			const result = await prisma.user_sessions.deleteMany({
+				where: {
+					OR: [{ expires_at: { lt: new Date() } }, { is_revoked: true }],
+				},
+			});
+
+			const executionTime = Date.now() - startTime;
+			console.log(
+				`✅ Session cleanup completed in ${executionTime}ms - Cleaned up ${result.count} expired sessions`,
+			);
+
+			return {
+				success: true,
+				sessionsCleaned: result.count,
+				executionTime,
+			};
+		} catch (error) {
+			const executionTime = Date.now() - startTime;
+			console.error(
+				`❌ Session cleanup failed after ${executionTime}ms:`,
+				error.message,
+			);
+			throw error;
+		}
+	}
+
+	/**
+	 * Schedule recurring session cleanup (every hour)
+	 */
+	async schedule() {
+		const job = await this.queueManager.queues[this.queueName].add(
+			"session-cleanup",
+			{},
+			{
+				repeat: { cron: "0 * * * *" }, // Every hour
+				jobId: "session-cleanup-recurring",
+			},
+		);
+		console.log("✅ Session cleanup scheduled");
+		return job;
+	}
+
+	/**
+	 * Trigger manual session cleanup
+	 */
+	async triggerManual() {
+		const job = await this.queueManager.queues[this.queueName].add(
+			"session-cleanup-manual",
+			{},
+			{ priority: 1 },
+		);
+		console.log("✅ Manual session cleanup triggered");
+		return job;
+	}
+}
+
+module.exports = SessionCleanup;