chore: init project

tests/InboxIntel.IntegrationTests/AuthEndpointsTests.cs

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+using System.Net;
+using FluentAssertions;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
+using Xunit;
+
+namespace InboxIntel.IntegrationTests;
+
+/// <summary>
+/// Test host that disables startup auto-migration so the factory boots without
+/// a live PostgreSQL instance. The auth tests below never touch the database
+/// (the challenge happens in middleware before any controller runs).
+/// </summary>
+public class TestAppFactory : WebApplicationFactory<Program>
+{
+    protected override IHost CreateHost(IHostBuilder builder)
+    {
+        builder.ConfigureHostConfiguration(cfg => cfg.AddInMemoryCollection(new Dictionary<string, string?>
+        {
+            ["Database:AutoMigrate"] = "false"
+        }));
+        return base.CreateHost(builder);
+    }
+}
+
+/// <summary>
+/// Smoke tests proving the host boots and authorization is enforced. A fuller
+/// suite would swap PostgreSQL for a Testcontainers instance and the Gmail
+/// client for a fake, then exercise sync -> analytics end to end.
+/// </summary>
+public class AuthEndpointsTests : IClassFixture<TestAppFactory>
+{
+    private readonly TestAppFactory _factory;
+    public AuthEndpointsTests(TestAppFactory factory) => _factory = factory;
+
+    [Fact]
+    public async Task Protected_endpoint_challenges_when_anonymous()
+    {
+        var client = _factory.CreateClient(new WebApplicationFactoryClientOptions { AllowAutoRedirect = false });
+        var resp = await client.GetAsync("/api/v1/analytics/dashboard");
+        // Unauthenticated -> redirect to Google challenge (302) or 401.
+        resp.StatusCode.Should().BeOneOf(HttpStatusCode.Found, HttpStatusCode.Unauthorized);
+    }
+
+    [Fact]
+    public async Task Login_endpoint_is_anonymous()
+    {
+        var client = _factory.CreateClient(new WebApplicationFactoryClientOptions { AllowAutoRedirect = false });
+        var resp = await client.GetAsync("/api/v1/auth/login");
+        resp.StatusCode.Should().Be(HttpStatusCode.Redirect); // 302 to Google
+    }
+}

tests/InboxIntel.IntegrationTests/InboxIntel.IntegrationTests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="xunit" Version="2.9.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="8.0.7" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="8.0.4" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\InboxIntel.Api\InboxIntel.Api.csproj" />
+  </ItemGroup>
+</Project>

tests/InboxIntel.UnitTests/GmailQueryParserTests.cs

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+using FluentAssertions;
+using InboxIntel.Application.Search;
+using Xunit;
+
+namespace InboxIntel.UnitTests;
+
+public class GmailQueryParserTests
+{
+    [Fact]
+    public void Parses_operators_and_free_text()
+    {
+        var r = GmailQueryParser.Parse("from:github.com is:unread has:attachment quarterly report");
+
+        r.Sender.Should().Be("github.com");
+        r.IsUnread.Should().BeTrue();
+        r.HasAttachments.Should().BeTrue();
+        r.Query.Should().Be("quarterly report");
+    }
+
+    [Fact]
+    public void Parses_date_range()
+    {
+        var r = GmailQueryParser.Parse("after:2025-01-01 before:2025-02-01");
+        r.From.Should().Be(new DateOnly(2025, 1, 1));
+        r.To.Should().Be(new DateOnly(2025, 2, 1));
+    }
+
+    [Fact]
+    public void Empty_query_yields_empty_filters()
+    {
+        var r = GmailQueryParser.Parse("   ");
+        r.Sender.Should().BeNull();
+        r.Query.Should().BeNull();
+    }
+
+    [Fact]
+    public void Is_read_sets_unread_false()
+    {
+        GmailQueryParser.Parse("is:read").IsUnread.Should().BeFalse();
+    }
+}

tests/InboxIntel.UnitTests/InboxIntel.UnitTests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="xunit" Version="2.9.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+    <PackageReference Include="FluentAssertions" Version="6.12.0" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\InboxIntel.Application\InboxIntel.Application.csproj" />
+    <ProjectReference Include="..\..\src\InboxIntel.Infrastructure\InboxIntel.Infrastructure.csproj" />
+  </ItemGroup>
+</Project>

tests/InboxIntel.UnitTests/UnsubscribeExtractionTests.cs

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+using FluentAssertions;
+using InboxIntel.Infrastructure.Gmail;
+using Xunit;
+
+namespace InboxIntel.UnitTests;
+
+public class UnsubscribeExtractionTests
+{
+    [Fact]
+    public void Prefers_http_link()
+    {
+        var raw = "<mailto:unsub@x.com>, <https://x.com/unsub?id=42>";
+        GmailMessageParser.ExtractUnsubscribeTarget(raw).Should().Be("https://x.com/unsub?id=42");
+    }
+
+    [Fact]
+    public void Falls_back_to_mailto()
+    {
+        var raw = "<mailto:unsubscribe@news.example.com>";
+        GmailMessageParser.ExtractUnsubscribeTarget(raw).Should().Be("mailto:unsubscribe@news.example.com");
+    }
+
+    [Fact]
+    public void Null_when_absent()
+    {
+        GmailMessageParser.ExtractUnsubscribeTarget(null).Should().BeNull();
+    }
+}