feat: initialize frontend with React, Vite, and Tailwind CSS

- Added package.json for project dependencies and scripts.
- Configured PostCSS with Tailwind CSS.
- Created main application structure with App component and routing.
- Implemented API client for handling requests with Axios.
- Developed authentication API for login, logout, and user verification.
- Created entities API for managing virtual entities.
- Implemented logs API for fetching dispatch logs.
- Added navigation bar component for app navigation.
- Created protected route component for route guarding.
- Set up global CSS with Tailwind directives.
- Configured main entry point for React application.
- Developed basic Dashboard and Login pages.
- Set up router for application navigation.
- Added Jest testing setup for testing library.
- Configured Tailwind CSS with content paths.
- Set TypeScript configuration for frontend.
- Created Vite configuration for development and production builds.
- Added Nginx configuration for serving the application and proxying API requests.

INSTRUCTIONS.md

@@ -37,7 +37,7 @@ employee is an AI-powered entity that:
 | Step | Description                             | Status      |
 |------|-----------------------------------------|-------------|
 | 0    | Define project & write CLAUDE.md        | ✅ Done     |
-| 1    | Scaffold monorepo structure             | ⬜ Pending  |
+| 1    | Scaffold monorepo structure             | ✅ Done     |
 | 2    | Domain model (JPA entities)             | ⬜ Pending  |
 | 3    | Repositories                            | ⬜ Pending  |
 | 4    | Email Reader Service (IMAP)             | ⬜ Pending  |
@@ -173,10 +173,10 @@ condado-news-letter/
 > `.github/workflows/publish.yml`. Do not implement business logic yet — just the skeleton."
 
 **Done when:**
-- [ ] `cd backend && ./gradlew build` compiles with no errors.
-- [ ] `cd frontend && npm install && npm run build` succeeds.
-- [ ] Application starts with `./gradlew bootRun` (backend) without errors.
-- [ ] `npm run dev` starts the Vite dev server.
+- [x] `cd backend && ./gradlew build` compiles with no errors.
+- [x] `cd frontend && npm install && npm run build` succeeds.
+- [x] Application starts with `./gradlew bootRun` (backend) without errors.
+- [x] `npm run dev` starts the Vite dev server.
 - [ ] `docker compose up --build` starts all containers.
 
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