Enhance Time Calculation Sheet for API Integration and Manual Entry #6
Description
The WorkLog Chrome extension currently features a time calculation sheet as its main screen. This issue aims to enhance the existing time calculation sheet to display work hours retrieved from external time tracking APIs as immutable (read-only) values and to allow users to add work hours manually. The enhancements should be implemented using React, TypeScript, and TailwindCSS, ensuring compatibility with Chrome Extension Manifest V3 and maintaining consistency with the application's design.