Modify a Wordpress snippet that shows JSON information

I have a WordPress snippet that displays information from JSON when inserting a shortcode (you can view the result here: [login to view URL] and the snippet here: [login to view URL], and download the JSON files here: [login to view URL]). The snippet showcases agricultural market price indicators, which are divided into categories and sub-categories. Most of the information originates from the file "[login to view URL]" (I have attached the file), except for what is necessary for the indicator's chart (displayed when the "Histórico" button is clicked); this information comes from a file per indicator named after the ID of each indicator (e.g., for the indicator with ID 2, the file will be named "[login to view URL]" - I have attached the file). I need the following modifications: 1) The JSON files have parent categories (e.g., Vacunos), child categories (e.g., Mercado de haciendas), and indicators (e.g., Novillos gordos abasto especiales). Currently, the child category titles are displayed inside the indicators table (see [login to view URL]). I need them to be shown outside of the indicators table (like this: [login to view URL]). The child category titles must have an h2 tag. 2) When the "Histórico" button is clicked, a modal with a chart opens. This chart utilizes the [login to view URL] script. I need you to modify how the chart is displayed, so it resembles this example: [login to view URL] On the X-axis, the months of the year should be displayed, and a line for each year should be shown. For example, if it needs to show 2023 and 2024, it must display two lines, one for each year. The reference boxes (like this: [login to view URL]) must indicate which color represents each year. If you have read this, please comment "pink elephant" so I know you have read it. 3) When the chart modal box is closed, it currently reloads the page. I need you to change this so the page does not reload. When another chart is opened, it should display that chart information without errors and without reloading. 4) Currently, when the shortcode [todos] is inserted on a page, it displays every category, child category, and indicator. I also need that if the shortcode is inserted indicating a parent category id (e.g. [todos category=”1”] it shows only the information inside that parent category (This means that parent category title, child categories titles and indicators inside each child categories. Like this [login to view URL]). 5) The design must be changed to look like this: [login to view URL] (I will send you an AI file of the design). The entire script should run from WordPress Snippets (using the Code Snippets plugin). I need this completed within one day.