Phase 1: Project scaffolding and infrastructure

- Scaffold Budget.Api (ASP.NET Core Web API, net10.0) with EF Core + Npgsql
- Scaffold Budget.Client (Vite + React + TypeScript) with /api proxy to localhost:5000
- Define all entity models: Budget, Income, Outgo, KnownUser, BudgetShare
- Configure AppDbContext with EF mappings and cascade deletes
- Add InitialCreate migration
- Configure SPA static file serving + fallback in Program.cs
- Add Dockerfile (multi-stage: node + dotnet sdk + aspnet runtime)
- Add .env.example with all required environment variables

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,22 @@
+# Stage 1: Build React client
+FROM node:22-alpine AS client-build
+WORKDIR /app/client
+COPY src/Budget.Client/package*.json ./
+RUN npm ci
+COPY src/Budget.Client/ ./
+RUN npm run build
+
+# Stage 2: Build and publish ASP.NET app
+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS api-build
+WORKDIR /app
+COPY Budget.sln ./
+COPY src/Budget.Api/ ./src/Budget.Api/
+RUN dotnet publish src/Budget.Api/Budget.Api.csproj -c Release -o /publish
+
+# Stage 3: Runtime image
+FROM mcr.microsoft.com/dotnet/aspnet:10.0
+WORKDIR /app
+COPY --from=api-build /publish ./
+COPY --from=client-build /app/client/dist ./wwwroot
+EXPOSE 8080
+ENTRYPOINT ["dotnet", "Budget.Api.dll"]