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.

.env.example

@@ -0,0 +1,33 @@
+# Copy this file to .env and fill in your values.
+# Never commit the actual .env file.
+
+# ── Authentication ────────────────────────────────────────────────────────────
+APP_PASSWORD=changeme
+JWT_SECRET=change-this-to-a-long-random-secret-at-least-256-bits
+JWT_EXPIRATION_MS=86400000
+
+# ── Database ──────────────────────────────────────────────────────────────────
+SPRING_DATASOURCE_URL=jdbc:postgresql://postgres:5432/condado
+SPRING_DATASOURCE_USERNAME=condado
+SPRING_DATASOURCE_PASSWORD=condado
+
+# ── SMTP (email sending) ──────────────────────────────────────────────────────
+MAIL_HOST=mailhog
+MAIL_PORT=1025
+MAIL_USERNAME=company@condado.example
+MAIL_PASSWORD=
+
+# ── IMAP (email reading) ──────────────────────────────────────────────────────
+IMAP_HOST=imap.example.com
+IMAP_PORT=993
+IMAP_INBOX_FOLDER=INBOX
+
+# ── OpenAI ────────────────────────────────────────────────────────────────────
+OPENAI_API_KEY=sk-replace-me
+OPENAI_MODEL=gpt-4o
+
+# ── Application ───────────────────────────────────────────────────────────────
+APP_RECIPIENTS=friend1@example.com,friend2@example.com
+
+# ── Frontend (Vite build-time) ────────────────────────────────────────────────
+VITE_API_BASE_URL=http://localhost:80