feat(frontend): Replace React with Blazor frontend

CLAUDE.md

@@ -7,7 +7,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 NimbusFlow is a scheduling system with a **monorepo structure** containing separate backend and frontend applications:
 
 - **Backend**: Python-based scheduling service using SQLite with a repository pattern
-- **Frontend**: React + TypeScript + Vite application
+- **Frontend**: .NET Blazor Server application with Bootstrap UI
 
 ### Backend Architecture
 
@@ -33,10 +33,26 @@ backend/
 
 ### Frontend Architecture
 
-React application using:
-- TypeScript for type safety
-- Vite for fast development and building
-- ESLint for code linting
+.NET 8 Blazor Server application with the following structure:
+
+```
+frontend/
+├── Components/
+│   ├── Layout/         # Layout components (NavMenu, MainLayout)
+│   └── Pages/          # Razor pages (Dashboard, Members, Schedules, Services)
+├── Models/             # C# models matching backend data structure
+├── Services/           # HTTP client services for API communication
+└── wwwroot/           # Static files and assets
+```
+
+**Key Components:**
+
+- **ApiService** (`Services/ApiService.cs`): HTTP client wrapper for Python backend API communication
+- **Models** (`Models/Member.cs`): C# data models (Member, Schedule, Service, Classification, etc.)
+- **Razor Components**: Interactive pages for member management, scheduling, and service administration
+- **Bootstrap UI**: Responsive design with Bootstrap 5 styling
+
+The frontend communicates with the Python backend via HTTP API calls, expecting JSON responses that match the C# model structure.
 
 ## Development Commands
 
@@ -72,22 +88,28 @@ python main.py
 **Setup:**
 ```bash
 cd frontend
-npm install
+# Restore NuGet packages
+dotnet restore
 ```
 
 **Development:**
 ```bash
 cd frontend
-# Start development server
-npm run dev
+# Start development server (with hot reload)
+dotnet watch
+# Or run without watch
+dotnet run
+
 # Build for production
-npm run build
-# Run linting
-npm run lint
-# Preview production build
-npm run preview
+dotnet build
+# Publish for deployment
+dotnet publish -c Release
 ```
 
+**Access:**
+- Development: https://localhost:5001 (HTTPS) or http://localhost:5000 (HTTP)
+- The application expects the Python backend API to be available at http://localhost:8000/api/
+
 ## Core Business Logic
 
 The **SchedulingService** implements a sophisticated member scheduling algorithm: