Page Analysis Chrome Extension

We need a Chrome extension that combines a rudimentary content script with a global SidePanel. The requirements are as follows:

* The SidePanel is opened by clicking on the extension button.
* The SidePanel is opened by clicking on an entry in the context menu of the active tab.
* When the SidePanel is opened, it recognises the URL and the DOM of the active tab in the SidePanel. Both are displayed in input/textarea elements.
* If the active tab changes, by whatever action (navigation, new tab, close tab, change of URL by historyChange etc.), the current URL and the current DOM are transferred to the SidePanel and displayed there.
* The functionality must also be available for websites that prevent the execution of Content JS via CSP (e.g. github.com).
* When the SidePanel is closed, no significant activity takes place.
* Use of vanilla JS.
* There are no options.
* We receive all usage rights to the non-minimised source code without mandatory copyright notices.