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>

src/Budget.Client/package.json

@@ -0,0 +1,30 @@
+{
+  "name": "budget-client",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^19.2.5",
+    "react-dom": "^19.2.5"
+  },
+  "devDependencies": {
+    "@eslint/js": "^10.0.1",
+    "@types/node": "^24.12.2",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.1",
+    "eslint": "^10.2.1",
+    "eslint-plugin-react-hooks": "^7.1.1",
+    "eslint-plugin-react-refresh": "^0.5.2",
+    "globals": "^17.5.0",
+    "typescript": "~6.0.2",
+    "typescript-eslint": "^8.58.2",
+    "vite": "^8.0.10"
+  }
+}