Local Notes Pad

This addon provides a simple notepad for users to store short notes. The addon's popup contains a `<textarea>` element where users can type their notes. The content of this textarea is automatically saved to `chrome.storage.local` or `localStorage` whenever it changes (`oninput` event listener). Upon opening the popup, the saved notes are loaded back into the textarea. Notes are persistent across browser sessions but never leave the user's local browser profile, ensuring privacy and offline access.