Merge branch 'feature/29-cron-config' into develop

Implements cron job configuration for Mosaic Stack.

Features:
- CronSchedule model for scheduling recurring commands
- REST API endpoints for CRUD operations
- Scheduler worker that polls for due schedules
- WebSocket notifications when schedules execute
- MoltBot plugin skill definition

Issues:
- #29 Cron job configuration (p1 plugin)
- #115 Cron scheduler worker
- #116 Cron WebSocket notifications

Tests:
- 18 passing tests (cron.service + cron.scheduler)

apps/api/src/websocket/websocket.gateway.ts

@@ -191,9 +191,16 @@ export class WebSocketGateway implements OnGatewayConnection, OnGatewayDisconnec
   }
 
   /**
-   * @description Get workspace room name for Socket.IO room management.
-   * @param workspaceId - The workspace identifier.
-   * @returns The room name in format "workspace:{workspaceId}".
+   * Emit cron:executed event when a scheduled command fires
+   */
+  emitCronExecuted(workspaceId: string, data: { scheduleId: string; command: string; executedAt: Date }): void {
+    const room = this.getWorkspaceRoom(workspaceId);
+    this.server.to(room).emit('cron:executed', data);
+    this.logger.debug(`Emitted cron:executed to ${room}`);
+  }
+
+  /**
+   * Get workspace room name
    */
   private getWorkspaceRoom(workspaceId: string): string {
     return `workspace:${workspaceId}`;