Initial commit: Purrse personal finance app

Self-hosted, plugin-extensible personal finance manager built with
ASP.NET Core 9.0, Vue 3 + Vuetify 3, and PostgreSQL 17.

Backend (8 .NET projects):
- Core: 19 domain models, 6 enums, 14 DTOs, 12 service interfaces
- Data: EF Core DbContext, 16 entity configurations, category seeder
- API: 14 controllers, 15 services, JWT auth, SignalR, middleware
- Plugins: Abstractions + OFX/CSV/QIF file parsers
- Tests: 28 xUnit tests (fingerprinting, duplicate detection, parsers)

Frontend (Vue 3 + Vuetify 3 + TypeScript):
- 13 views, Pinia stores, Axios API services with JWT interceptors
- Dashboard, accounts, transactions, categories, imports, and more

Deployment:
- Docker Compose (PostgreSQL 17 + .NET API + nginx frontend)
- Auto-migration on startup

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

src/Purrse.Tests/Purrse.Tests.csproj

@@ -0,0 +1,34 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
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+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
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+  </PropertyGroup>
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+  <ItemGroup>
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+    <PackageReference Include="FluentAssertions" Version="7.2.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.6" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Moq" Version="4.20.72" />
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+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
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+  <ItemGroup>
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+    <ProjectReference Include="..\Purrse.Data\Purrse.Data.csproj" />
+    <ProjectReference Include="..\Purrse.Api\Purrse.Api.csproj" />
+    <ProjectReference Include="..\Purrse.Plugins.Abstractions\Purrse.Plugins.Abstractions.csproj" />
+    <ProjectReference Include="..\Purrse.Plugins.OFX\Purrse.Plugins.OFX.csproj" />
+    <ProjectReference Include="..\Purrse.Plugins.CSV\Purrse.Plugins.CSV.csproj" />
+    <ProjectReference Include="..\Purrse.Plugins.QIF\Purrse.Plugins.QIF.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+</Project>