feat: agregar verificación de grupos activos

Co-authored-by: aider (openrouter/x-ai/grok-code-fast-1) <aider@aider.chat>

src/server.ts

@@ -129,6 +129,14 @@ export class WebhookServer {
 			return;
 		}
 
+		// Check if the group is active
+		if (!GroupSyncService.isGroupActive(data.key.remoteJid)) {
+			if (process.env.NODE_ENV !== 'test') {
+				console.log('⚠️ Group is not active, ignoring message');
+			}
+			return;
+		}
+
 		// Forward to command service only if:
 		// 1. It's a text message (has conversation field)
 		// 2. Starts with /tarea command

src/services/group-sync.ts

@@ -319,4 +319,14 @@ export class GroupSyncService {
 			throw error;
 		}
 	}
+
+	/**
+	 * Checks if a given group ID is active based on the in-memory cache.
+	 * 
+	 * @param groupId The group ID to check (e.g., '123456789@g.us').
+	 * @returns True if the group is active, false otherwise.
+	 */
+	static isGroupActive(groupId: string): boolean {
+		return activeGroupsCache.has(groupId);
+	}
 }