mizok-o/next_pocket

AI Summary: Standardize error message styling across a React project and a Chrome extension. This involves updating specified files to use consistent Tailwind CSS classes (`text-red-500 text-sm mt-2`) for all error messages, ensuring no functional changes or new CSS classes are introduced. The Chrome extension's styling needs to be checked and updated to match, if possible using Tailwind classes.

AI Summary: Update the basic information in the project configuration files. This involves changing the HTML language setting in `src/app/layout.tsx`, adding a project description to `package.json`, and translating the extension description in `chrome-extension/manifest.json` to Japanese. Only these three files should be modified, and no new dependencies should be added.