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.

CLAUDE.md

@@ -478,3 +478,15 @@ BODY:
 **Image tags pushed on every `main` merge:**
 - `<dockerhub-user>/condado-newsletter:latest`
 - `<dockerhub-user>/condado-newsletter:<git-sha>` (for pinning)
+
+---
+
+## Step 1 Decisions & Versions
+
+| Decision | Detail |
+|---|---|
+| Gradle wrapper | **8.14.1** (upgraded from 8.7 — Gradle < 8.14 cannot parse Java version `26`) |
+| Spring Boot | **3.4.5** (latest stable at time of scaffold) |
+| Kotlin | **2.1.21** (latest stable, bundled with Gradle 8.14.1) |
+| Java toolchain | **21** configured in `build.gradle.kts` via `kotlin { jvmToolchain(21) }` — bytecode targets Java 21 regardless of host JDK |
+| Frontend test script | `vitest run --passWithNoTests` — prevents CI failure before Step 12 adds real tests |