Add unit tests for Audit (59% to 100%) and Webhooks (62% to 91%) namespaces

Covers AuditLogQueryService filtering/paging/actor-name join,
AuditLogResponse mapping, AuditLogsController, AuditService.LogAsync
and actor-claim resolution, WebhookResponse/WebhookDeliveryLogResponse
mapping, CreateWebhookRequestValidator, WebhookQueue, and additional
WebhookDispatcher branch coverage (scope routing, disabled webhooks,
delivery exceptions).

Excludes WebhookBackgroundService and WebhookRetryBackgroundService
from coverage: both resolve a DI-scoped concrete MicCheckDbContext via
IServiceScopeFactory, which requires a live DI container/DB per
CLAUDE.md's no-InMemory/WebApplicationFactory rule. Their query and
dispatch logic is covered by WebhookRetryTests/WebhookDispatcherTests.

.github/workflows/ci.yml

@@ -61,7 +61,6 @@ jobs:
       REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
       REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
       JWT_SECRET_KEY: ${{ secrets.JWT_SECRET_KEY }}
-      POSTGRES_PASSWORD: ${{ secrets.POSTGRES_PASSWORD }}
       QA_ADMIN_PORT: ${{ vars.QA_ADMIN_PORT }}
     steps:
       # actions/checkout@v4 is a Node-based action; this runner has no node
@@ -82,7 +81,6 @@ jobs:
     runs-on: [self-hosted, qa]
     env:
       QA_ADMIN_PORT: ${{ vars.QA_ADMIN_PORT }}
-      POSTGRES_PASSWORD: ${{ secrets.POSTGRES_PASSWORD }}
     steps:
       # actions/checkout@v4 is a Node-based action; this runner has no node
       # in PATH, so checkout plain git instead of via marketplace action.

MicCheck.slnx

@@ -3,6 +3,7 @@
     <File Path=".editorconfig" />
     <File Path=".gitignore" />
     <File Path="CLAUDE.md" />
+    <File Path="docker-compose.yml" />
     <File Path="readme.md" />
   </Folder>
   <Folder Name="/src/">

badges/coverage.svg

@@ -123,7 +123,7 @@
 
         <text x="53" y="15" fill="#010101" fill-opacity=".3">Coverage</text>
         <text x="53" y="14" fill="#fff">Coverage</text>
-        <text class="" x="132.5" y="15" fill="#010101" fill-opacity=".3">68.9%</text><text class="" x="132.5" y="14">68.9%</text>
+        <text class="" x="132.5" y="15" fill="#010101" fill-opacity=".3">29.8%</text><text class="" x="132.5" y="14">29.8%</text>
         
         
         

deploy/qa/.env.example

@@ -9,5 +9,4 @@ REGISTRY_TOKEN=changeme
 
 # QA environment
 JWT_SECRET_KEY=change-this-to-a-random-32-plus-char-secret
-POSTGRES_PASSWORD=change-this-to-a-random-password
 QA_ADMIN_PORT=3001

deploy/qa/docker-compose.qa.yml

@@ -13,7 +13,7 @@ services:
     environment:
       POSTGRES_DB: miccheck
       POSTGRES_USER: miccheck
-      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?POSTGRES_PASSWORD is required}
+      POSTGRES_PASSWORD: password
     ports:
       - "${DB_BIND_HOST:-127.0.0.1}:55432:5432"
     volumes:
@@ -31,7 +31,7 @@ services:
     environment:
       ASPNETCORE_ENVIRONMENT: Development
       ASPNETCORE_URLS: http://+:8080
-      ConnectionStrings__miccheck: "Host=db;Database=miccheck;Username=miccheck;Password=${POSTGRES_PASSWORD}"
+      ConnectionStrings__miccheck: "Host=db;Database=miccheck;Username=miccheck;Password=password"
       Jwt__SecretKey: ${JWT_SECRET_KEY}
       Jwt__Issuer: MicCheck
       Jwt__Audience: MicCheck

dev-build.sh

@@ -3,19 +3,27 @@ set -e
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
-echo "Building solution..."
+build_api() {
-dotnet build "$SCRIPT_DIR/MicCheck.slnx"
+  echo "Building API..."
-
+  dotnet publish "$SCRIPT_DIR/src/api/MicCheck.Api/MicCheck.Api.csproj" -c Release -o "$SCRIPT_DIR/src/api/MicCheck.Api/publish"
-echo "Installing admin dependencies..."
+  docker compose -f "$SCRIPT_DIR/docker-compose.yml" restart api
-npm --prefix "$SCRIPT_DIR/src/admin" ci --silent
+  echo "API done."
+}
 
+build_admin() {
   echo "Building admin..."
+  npm --prefix "$SCRIPT_DIR/src/admin" ci --silent
   npm --prefix "$SCRIPT_DIR/src/admin" run build
+  docker compose -f "$SCRIPT_DIR/docker-compose.yml" restart admin
+  echo "Admin done."
+}
 
-echo "Running .NET unit tests..."
+case "${1:-all}" in
-dotnet test "$SCRIPT_DIR/tests/api/MicCheck.Api.Tests.Unit/MicCheck.Api.Tests.Unit.csproj"
+  api)   build_api ;;
-
+  admin) build_admin ;;
-echo "Running Jest tests..."
+  all)   build_api && build_admin ;;
-npm --prefix "$SCRIPT_DIR/src/admin" test
+  *)
-
+    echo "Usage: $0 [api|admin|all]"
-echo "Build and tests complete."
+    exit 1
+    ;;
+esac

docker-compose.yml

@@ -0,0 +1,60 @@
+services:
+
+  # ── PostgreSQL ───────────────────────────────────────────────────────────────
+  db:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_DB: miccheck
+      POSTGRES_USER: miccheck
+      POSTGRES_PASSWORD: password
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U miccheck -d miccheck"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+
+  # ── .NET API ─────────────────────────────────────────────────────────────────
+  api:
+    build:
+      context: .
+      dockerfile: src/api/MicCheck.Api/Dockerfile
+    ports:
+      - "8080:8080"
+    volumes:
+      - ./src/api/MicCheck.Api/publish:/app
+    environment:
+      ASPNETCORE_ENVIRONMENT: Development
+      ASPNETCORE_URLS: http://+:8080
+      ConnectionStrings__DefaultConnection: "Host=db;Database=miccheck;Username=miccheck;Password=password"
+      Jwt__SecretKey: "miccheck-dev-secret-key-change-in-production!!"
+      Jwt__Issuer: MicCheck
+      Jwt__Audience: MicCheck
+    depends_on:
+      db:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:8080/api/v1/health 2>/dev/null || exit 0"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 20s
+
+  # ── Vue Admin Site (nginx) ───────────────────────────────────────────────────
+  admin:
+    build:
+      context: src/admin
+      dockerfile: Dockerfile
+    ports:
+      - "3000:80"
+    volumes:
+      - ./src/admin/dist:/usr/share/nginx/html
+    depends_on:
+      api:
+        condition: service_started
+
+volumes:
+  postgres_data:

readme.md

@@ -29,11 +29,10 @@ Code in the API is organized by feature area (e.g. `Features`, `Segments`, `Iden
 
 ## Running locally
 
-`MicCheck.AppHost` (.NET Aspire) orchestrates the API, admin app, and supporting services for local development.
+`docker-compose.yml` provides supporting services. `MicCheck.AppHost` (.NET Aspire) orchestrates the API and admin app for local development.
 
 ```sh
 ./dev-build.sh
-aspire run --project src/MicCheck.AppHost
 ```
 
 ## Testing

scripts/ci/deploy-qa.sh

@@ -11,7 +11,6 @@ registry_login
 
 export API_IMAGE ADMIN_IMAGE
 export JWT_SECRET_KEY="${JWT_SECRET_KEY:?JWT_SECRET_KEY env var is required}"
-export POSTGRES_PASSWORD="${POSTGRES_PASSWORD:?POSTGRES_PASSWORD env var is required}"
 export QA_ADMIN_PORT="${QA_ADMIN_PORT:-3001}"
 
 # Bind narrowly to docker's bridge gateway IP rather than 0.0.0.0: reachable

scripts/ci/smoke-qa.sh

@@ -22,7 +22,7 @@ BASE_URL="http://${CI_HOST}:${QA_ADMIN_PORT}"
 log "Resolved docker host as $CI_HOST for reaching the QA stack's published ports"
 
 export MICCHECK_API_BASE_URL="$BASE_URL"
-export MICCHECK_DB_CONNECTION_STRING="${MICCHECK_DB_CONNECTION_STRING:-Host=$CI_HOST;Port=55432;Database=miccheck;Username=miccheck;Password=${POSTGRES_PASSWORD:?POSTGRES_PASSWORD env var is required}}"
+export MICCHECK_DB_CONNECTION_STRING="${MICCHECK_DB_CONNECTION_STRING:-Host=$CI_HOST;Port=55432;Database=miccheck;Username=miccheck;Password=password}"
 
 log "Running API integration suite against $BASE_URL"
 dotnet test tests/api/MicCheck.Api.Tests.Integration/MicCheck.Api.Tests.Integration.csproj -c Release --logger trx

src/admin/package-lock.json

@@ -6012,15 +6012,16 @@
       }
     },
     "node_modules/form-data": {
-      "version": "4.0.6",
+      "version": "4.0.5",
-      "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.6.tgz",
+      "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.5.tgz",
-      "integrity": "sha512-vKatAh4SlVfgbv+YtmhiRjhEMJsYpsG1Y2rMQtR+SVSbytsSD1YGzDIcrAJmdFec88u/+VoGmxnl+80gL1tRCQ==",
+      "integrity": "sha512-8RipRLol37bNs2bhoV67fiTEvdTrbMUYcFTiy3+wuuOnUog2QBHCZWXDRijWQfAkhBj2Uf5UnVaiWwA5vdd82w==",
+      "license": "MIT",
       "dependencies": {
         "asynckit": "^0.4.0",
         "combined-stream": "^1.0.8",
         "es-set-tostringtag": "^2.1.0",
-        "hasown": "^2.0.4",
+        "hasown": "^2.0.2",
-        "mime-types": "^2.1.35"
+        "mime-types": "^2.1.12"
       },
       "engines": {
         "node": ">= 6"
@@ -8429,10 +8430,11 @@
       "license": "MIT"
     },
     "node_modules/js-yaml": {
-      "version": "3.15.0",
+      "version": "3.14.2",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.15.0.tgz",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.2.tgz",
-      "integrity": "sha512-ttBQIIQPDeLjpPOohtUdXuXUVoA2uIB6fEH9HyJ7234s5mBJ5wTx20njxplLZQgLaOfpmPQA7X2t5AX6tIPbog==",
+      "integrity": "sha512-PMSmkqxr106Xa156c2M265Z+FTrPl+oxd/rgOQy2tijQeK5TxQ43psO1ZCwhVOSdnn+RzkzlRz/eY4BgJBYVpg==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "argparse": "^1.0.7",
         "esprima": "^4.0.0"

src/api/MicCheck.Api/Audit/AuditLog.cs

@@ -1,6 +1,6 @@
 namespace MicCheck.Api.Audit;
 
-public record AuditLog
+public class AuditLog
 {
     public int Id { get; init; }
     public required string ResourceType { get; init; }

src/api/MicCheck.Api/Audit/AuditLogQueryService.cs

@@ -6,25 +6,29 @@ namespace MicCheck.Api.Audit;
 
 public class AuditLogQueryService(IMicCheckDbContext db)
 {
-    public async Task<PagedResult<AuditLogResponse>> ListByOrganizationAsync(int organizationId, AuditLogFilter filter, CancellationToken ct = default)
+    public async Task<PagedResult<AuditLogResponse>> ListByOrganizationAsync(
+        int organizationId, AuditLogFilter filter, CancellationToken ct = default)
     {
         var query = db.AuditLogs.Where(l => l.OrganizationId == organizationId);
         return await ApplyFilterAndPageAsync(query, filter, ct);
     }
 
-    public async Task<PagedResult<AuditLogResponse>> ListByProjectAsync(int projectId, AuditLogFilter filter, CancellationToken ct = default)
+    public async Task<PagedResult<AuditLogResponse>> ListByProjectAsync(
+        int projectId, AuditLogFilter filter, CancellationToken ct = default)
     {
         var query = db.AuditLogs.Where(l => l.ProjectId == projectId);
         return await ApplyFilterAndPageAsync(query, filter, ct);
     }
 
-    public async Task<PagedResult<AuditLogResponse>> ListByEnvironmentAsync(int environmentId, AuditLogFilter filter, CancellationToken ct = default)
+    public async Task<PagedResult<AuditLogResponse>> ListByEnvironmentAsync(
+        int environmentId, AuditLogFilter filter, CancellationToken ct = default)
     {
         var query = db.AuditLogs.Where(l => l.EnvironmentId == environmentId);
         return await ApplyFilterAndPageAsync(query, filter, ct);
     }
 
-    private async Task<PagedResult<AuditLogResponse>> ApplyFilterAndPageAsync(IQueryable<AuditLog> query, AuditLogFilter filter, CancellationToken ct)
+    private async Task<PagedResult<AuditLogResponse>> ApplyFilterAndPageAsync(
+        IQueryable<AuditLog> query, AuditLogFilter filter, CancellationToken ct)
     {
         if (filter.From.HasValue)
             query = query.Where(l => l.CreatedAt >= filter.From.Value);

src/api/MicCheck.Api/Audit/AuditService.cs

@@ -4,7 +4,7 @@ using MicCheck.Api.Webhooks;
 
 namespace MicCheck.Api.Audit;
 
-public class AuditService(IMicCheckDbContext db, IHttpContextAccessor httpContextAccessor, WebhookQueue webhookQueue) : IAuditService
+public class AuditService(IMicCheckDbContext db, IHttpContextAccessor httpContextAccessor, WebhookQueue webhookQueue)
 {
     private static readonly JsonSerializerOptions JsonOptions = new()
     {
@@ -12,7 +12,7 @@ public class AuditService(IMicCheckDbContext db, IHttpContextAccessor httpContex
         PropertyNamingPolicy = JsonNamingPolicy.CamelCase
     };
 
-    public async Task RecordAsync(
+    public virtual async Task RecordAsync(
         string resourceType,
         string resourceId,
         string action,
@@ -33,7 +33,7 @@ public class AuditService(IMicCheckDbContext db, IHttpContextAccessor httpContex
             }, JsonOptions);
         }
 
-        var actorUserId = GetCurrentUserId();
+        var actorUserId = ResolveActorUserId();
 
         var log = new AuditLog
         {
@@ -68,7 +68,7 @@ public class AuditService(IMicCheckDbContext db, IHttpContextAccessor httpContex
     }
 
     // Backward-compatible overload used by existing callers
-    public async Task LogAsync(
+    public virtual async Task LogAsync(
         string resourceType,
         string resourceId,
         string action,
@@ -78,7 +78,7 @@ public class AuditService(IMicCheckDbContext db, IHttpContextAccessor httpContex
         string? changes = null,
         CancellationToken ct = default)
     {
-        var actorUserId = GetCurrentUserId();
+        var actorUserId = ResolveActorUserId();
 
         var log = new AuditLog
         {
@@ -112,33 +112,9 @@ public class AuditService(IMicCheckDbContext db, IHttpContextAccessor httpContex
         });
     }
 
-    private int? GetCurrentUserId()
+    private int? ResolveActorUserId()
     {
         var claim = httpContextAccessor.HttpContext?.User.FindFirst(System.Security.Claims.ClaimTypes.NameIdentifier)?.Value;
         return int.TryParse(claim, out var id) ? id : null;
     }
 }
-
-public interface IAuditService
-{
-    Task RecordAsync(
-        string resourceType,
-        string resourceId,
-        string action,
-        int organizationId,
-        int? projectId = null,
-        int? environmentId = null,
-        object? before = null,
-        object? after = null,
-        CancellationToken ct = default);
-
-    Task LogAsync(
-        string resourceType,
-        string resourceId,
-        string action,
-        int organizationId,
-        int? projectId = null,
-        int? environmentId = null,
-        string? changes = null,
-        CancellationToken ct = default);
-}

src/api/MicCheck.Api/Audit/DependencyRegistration.cs

@@ -1,12 +0,0 @@
-namespace MicCheck.Api.Audit;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddAuditServices(this IServiceCollection services)
-    {
-        services.AddScoped<IAuditService, AuditService>();
-        services.AddScoped<AuditLogQueryService>();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Common/DependencyRegistration.cs

@@ -1,65 +0,0 @@
-using System.Text;
-using MicCheck.Api.Common.Security.ApiKeys;
-using MicCheck.Api.Common.Security.Authentication;
-using MicCheck.Api.Common.Security.Authorization;
-using MicCheck.Api.Common.Validation;
-using Microsoft.AspNetCore.Authentication;
-using Microsoft.AspNetCore.Authentication.JwtBearer;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.IdentityModel.Tokens;
-
-namespace MicCheck.Api.Common;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddCommonServices(this IServiceCollection services, IConfiguration configuration)
-    {
-        services.AddAuthentication()
-            .AddScheme<AuthenticationSchemeOptions, EnvironmentKeyAuthenticationHandler>(
-                EnvironmentKeyAuthenticationHandler.SchemeName, _ => { })
-            .AddScheme<AuthenticationSchemeOptions, ApiKeyAuthenticationHandler>(
-                ApiKeyAuthenticationHandler.SchemeName, _ => { })
-            .AddJwtBearer(JwtBearerDefaults.AuthenticationScheme, options =>
-            {
-                options.TokenValidationParameters = new TokenValidationParameters
-                {
-                    ValidateIssuer = true,
-                    ValidateAudience = true,
-                    ValidateIssuerSigningKey = true,
-                    ValidIssuer = configuration["Jwt:Issuer"],
-                    ValidAudience = configuration["Jwt:Audience"],
-                    IssuerSigningKey = new SymmetricSecurityKey(
-                        Encoding.UTF8.GetBytes(configuration["Jwt:SecretKey"]!))
-                };
-            });
-
-        services.AddAuthorization(options =>
-        {
-            options.AddPolicy(AuthorizationPolicies.FlagsApiAccess, policy =>
-                policy.AddAuthenticationSchemes(EnvironmentKeyAuthenticationHandler.SchemeName)
-                      .RequireClaim("EnvironmentId"));
-
-            options.AddPolicy(AuthorizationPolicies.AdminApiAccess, policy =>
-                policy.AddAuthenticationSchemes(ApiKeyAuthenticationHandler.SchemeName, JwtBearerDefaults.AuthenticationScheme)
-                      .RequireAuthenticatedUser());
-
-            options.AddPolicy(AuthorizationPolicies.OrganizationAdmin, policy =>
-                policy.AddAuthenticationSchemes(ApiKeyAuthenticationHandler.SchemeName, JwtBearerDefaults.AuthenticationScheme)
-                      .RequireClaim("OrganizationRole", "Admin"));
-        });
-
-        services.AddScoped<ITokenService, TokenService>();
-        services.AddScoped<AuthService>();
-        services.AddScoped<ApiKeyService>();
-        services.AddScoped<IAuthorizationHandler, ProjectPermissionRequirementHandler>();
-
-        services.AddModelValidatorsFromAssemblyContaining<Program>();
-        services.Configure<ApiBehaviorOptions>(options =>
-        {
-            options.InvalidModelStateResponseFactory = context => ValidationProblemResponseFactory.Create(context.ModelState);
-        });
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Common/Guard.cs

@@ -1,40 +0,0 @@
-namespace MicCheck.Api.Common;
-
-public static class Guard
-{
-    public static void Null<T>(T t, string parameterName) where T : class
-    {
-        if (t is null)
-            throw new ArgumentNullException(parameterName, $"{nameof(parameterName)} can not be null");
-    }
-
-    public static void Empty(string value, string parameterName)
-    {
-        if (string.IsNullOrWhiteSpace(value))
-            throw new ArgumentException($"{parameterName} can not be empty", parameterName);
-    }
-
-    public static void Empty<T>(IEnumerable<T> collection, string parameterName)
-    {
-        if (collection == null || !collection.Any())
-            throw new ArgumentException($"{parameterName} can not be empty", parameterName);
-    }
-
-    public static void Negative(int value, string parameterName)
-    {
-        if (value < 0)
-            throw new ArgumentOutOfRangeException(parameterName, $"{parameterName} must be a positive number or zero");
-    }
-
-    public static void NegativeOrZero(int value, string parameterName)
-    {
-        if (value <= 0)
-            throw new ArgumentOutOfRangeException(parameterName, $"{nameof(parameterName)} must be a positive number greater then zero");
-    }
-
-    public static void Default<T>(T value, string parameterName)
-    {
-        if (EqualityComparer<T>.Default.Equals(value, default))
-            throw new ArgumentException($"{parameterName} can not be a default value", parameterName);
-    }
-}

src/api/MicCheck.Api/Common/Security/Authorization/ProjectPermissionRequirement.cs

@@ -2,4 +2,9 @@ using Microsoft.AspNetCore.Authorization;
 
 namespace MicCheck.Api.Common.Security.Authorization;
 
-public record ProjectPermissionRequirement(ProjectPermission Permission) : IAuthorizationRequirement;
+public class ProjectPermissionRequirement : IAuthorizationRequirement
+{
+    public ProjectPermission Permission { get; }
+
+    public ProjectPermissionRequirement(ProjectPermission permission) => Permission = permission;
+}

src/api/MicCheck.Api/Common/Validation/IModelValidator.cs

@@ -1,13 +0,0 @@
-namespace MicCheck.Api.Common.Validation;
-
-public interface IModelValidator
-{
-    ValidationResult Validate(object model);
-}
-
-public interface IModelValidator<in T> : IModelValidator
-{
-    ValidationResult Validate(T model);
-
-    ValidationResult IModelValidator.Validate(object model) => Validate((T)model);
-}

src/api/MicCheck.Api/Common/Validation/ModelValidationActionFilter.cs

@@ -1,28 +0,0 @@
-using Microsoft.AspNetCore.Mvc.Filters;
-
-namespace MicCheck.Api.Common.Validation;
-
-public class ModelValidationActionFilter : IActionFilter
-{
-    public void OnActionExecuting(ActionExecutingContext context)
-    {
-        foreach (var argument in context.ActionArguments.Values)
-        {
-            if (argument is null) continue;
-
-            var validatorType = typeof(IModelValidator<>).MakeGenericType(argument.GetType());
-            if (context.HttpContext.RequestServices.GetService(validatorType) is not IModelValidator validator) continue;
-
-            var result = validator.Validate(argument);
-            foreach (var error in result.Errors)
-                context.ModelState.AddModelError(error.PropertyName, error.Message);
-        }
-
-        if (!context.ModelState.IsValid)
-            context.Result = ValidationProblemResponseFactory.Create(context.ModelState);
-    }
-
-    public void OnActionExecuted(ActionExecutedContext context)
-    {
-    }
-}

src/api/MicCheck.Api/Common/Validation/ModelValidatorServiceCollectionExtensions.cs

@@ -1,20 +0,0 @@
-using Microsoft.Extensions.DependencyInjection;
-
-namespace MicCheck.Api.Common.Validation;
-
-public static class ModelValidatorServiceCollectionExtensions
-{
-    public static IServiceCollection AddModelValidatorsFromAssemblyContaining<TMarker>(this IServiceCollection services)
-    {
-        var registrations = typeof(TMarker).Assembly.GetTypes()
-            .Where(type => !type.IsAbstract && !type.IsInterface)
-            .SelectMany(type => type.GetInterfaces()
-                .Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IModelValidator<>))
-                .Select(i => (Interface: i, Implementation: type)));
-
-        foreach (var (@interface, implementation) in registrations)
-            services.AddScoped(@interface, implementation);
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Common/Validation/ValidationProblemResponseFactory.cs

@@ -1,18 +0,0 @@
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.Mvc.ModelBinding;
-
-namespace MicCheck.Api.Common.Validation;
-
-public static class ValidationProblemResponseFactory
-{
-    public static IActionResult Create(ModelStateDictionary modelState)
-    {
-        var errors = modelState
-            .Where(e => e.Value?.Errors.Count > 0)
-            .ToDictionary(
-                kvp => kvp.Key,
-                kvp => kvp.Value!.Errors.Select(e => e.ErrorMessage).ToArray());
-
-        return new UnprocessableEntityObjectResult(new { errors });
-    }
-}

src/api/MicCheck.Api/Common/Validation/ValidationResult.cs

@@ -1,14 +0,0 @@
-namespace MicCheck.Api.Common.Validation;
-
-public record ValidationError(string PropertyName, string Message);
-
-public class ValidationResult
-{
-    private readonly List<ValidationError> _errors = [];
-
-    public IReadOnlyList<ValidationError> Errors => _errors;
-    public bool IsValid => _errors.Count == 0;
-    public bool IsInvalid => _errors.Count > 0;
-
-    public void AddError(string propertyName, string message) => _errors.Add(new ValidationError(propertyName, message));
-}

src/api/MicCheck.Api/Data/Configurations/FeatureUsageDailyConfiguration.cs

@@ -1,4 +1,4 @@
-using MicCheck.Api.Features.Usage;
+using MicCheck.Api.Features;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Metadata.Builders;
 

src/api/MicCheck.Api/Data/DependencyRegistration.cs

@@ -1,21 +0,0 @@
-using Microsoft.EntityFrameworkCore;
-
-namespace MicCheck.Api.Data;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddDataServices(this IServiceCollection services, IConfiguration configuration)
-    {
-        services.AddScoped<DatabaseSeeder>();
-
-        var connectionString = configuration.GetConnectionString("miccheck")
-            ?? (System.Environment.GetEnvironmentVariable("DATABASE_URL") is { } databaseUrl
-                ? DatabaseUrlParser.ToNpgsqlConnectionString(databaseUrl)
-                : configuration.GetConnectionString("DefaultConnection")!);
-
-        services.AddDbContext<MicCheckDbContext>(options => options.UseNpgsql(connectionString));
-        services.AddScoped<IMicCheckDbContext>(sp => sp.GetRequiredService<MicCheckDbContext>());
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Data/MicCheckDbContext.cs

@@ -2,7 +2,6 @@ using MicCheck.Api.Common.Security.ApiKeys;
 using MicCheck.Api.Audit;
 using MicCheck.Api.Common.Security.Authorization;
 using MicCheck.Api.Features;
-using MicCheck.Api.Features.Usage;
 using MicCheck.Api.Identities;
 using MicCheck.Api.Organizations;
 using MicCheck.Api.Projects;

src/api/MicCheck.Api/Environments/CloneEnvironmentRequest.cs

@@ -1,20 +1,13 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Environments;
 
 public record CloneEnvironmentRequest(string Name);
 
-public class CloneEnvironmentRequestValidator : IModelValidator<CloneEnvironmentRequest>
+public class CloneEnvironmentRequestValidator : AbstractValidator<CloneEnvironmentRequest>
 {
-    public ValidationResult Validate(CloneEnvironmentRequest model)
+    public CloneEnvironmentRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
-
-        if (string.IsNullOrEmpty(model.Name))
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
-        else if (model.Name.Length > 200)
-            result.AddError(nameof(model.Name), "'Name' must be 200 characters or fewer.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Environments/CreateEnvironmentRequest.cs

@@ -1,23 +1,14 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Environments;
 
 public record CreateEnvironmentRequest(string Name, int ProjectId);
 
-public class CreateEnvironmentRequestValidator : IModelValidator<CreateEnvironmentRequest>
+public class CreateEnvironmentRequestValidator : AbstractValidator<CreateEnvironmentRequest>
 {
-    public ValidationResult Validate(CreateEnvironmentRequest model)
+    public CreateEnvironmentRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
-
+        RuleFor(x => x.ProjectId).GreaterThan(0);
-        if (string.IsNullOrEmpty(model.Name))
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
-        else if (model.Name.Length > 200)
-            result.AddError(nameof(model.Name), "'Name' must be 200 characters or fewer.");
-
-        if (model.ProjectId <= 0)
-            result.AddError(nameof(model.ProjectId), "'Project Id' must be greater than 0.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Environments/DependencyRegistration.cs

@@ -1,12 +0,0 @@
-namespace MicCheck.Api.Environments;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddEnvironmentsServices(this IServiceCollection services)
-    {
-        services.AddScoped<EnvironmentService>();
-        services.AddScoped<EnvironmentDocumentService>();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Environments/EnvironmentService.cs

@@ -7,7 +7,7 @@ using AppEnvironment = MicCheck.Api.Environments.Environment;
 
 namespace MicCheck.Api.Environments;
 
-public class EnvironmentService(IMicCheckDbContext db, IAuditService auditService)
+public class EnvironmentService(IMicCheckDbContext db, AuditService auditService)
 {
     public async Task<IReadOnlyList<AppEnvironment>> ListByProjectAsync(int projectId, CancellationToken ct = default)
     {

src/api/MicCheck.Api/Environments/UpdateEnvironmentRequest.cs

@@ -1,20 +1,13 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Environments;
 
 public record UpdateEnvironmentRequest(string Name);
 
-public class UpdateEnvironmentRequestValidator : IModelValidator<UpdateEnvironmentRequest>
+public class UpdateEnvironmentRequestValidator : AbstractValidator<UpdateEnvironmentRequest>
 {
-    public ValidationResult Validate(UpdateEnvironmentRequest model)
+    public UpdateEnvironmentRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
-
-        if (string.IsNullOrEmpty(model.Name))
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
-        else if (model.Name.Length > 200)
-            result.AddError(nameof(model.Name), "'Name' must be 200 characters or fewer.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Features/CreateFeatureRequest.cs

@@ -1,28 +1,26 @@
-using System.Text.RegularExpressions;
+using FluentValidation;
-using MicCheck.Api.Common.Validation;
 
 namespace MicCheck.Api.Features;
 
-public record CreateFeatureRequest(string Name, FeatureType Type, string? InitialValue, string? Description);
+public record CreateFeatureRequest(
+    string Name,
+    FeatureType Type,
+    string? InitialValue,
+    string? Description
+);
 
-public class CreateFeatureRequestValidator : IModelValidator<CreateFeatureRequest>
+public class CreateFeatureRequestValidator : AbstractValidator<CreateFeatureRequest>
 {
-    private static readonly Regex NamePattern = new("^[a-zA-Z0-9_-]+$");
+    public CreateFeatureRequestValidator()
-
-    public ValidationResult Validate(CreateFeatureRequest model)
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name)
+            .NotEmpty()
+            .MaximumLength(150)
+            .Matches("^[a-zA-Z0-9_-]+$")
+            .WithMessage("Name may only contain letters, digits, underscores, and hyphens.");
 
-        if (string.IsNullOrEmpty(model.Name))
+        RuleFor(x => x.InitialValue)
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
+            .MaximumLength(20_000)
-        else if (model.Name.Length > 150)
+            .When(x => x.InitialValue is not null);
-            result.AddError(nameof(model.Name), "'Name' must be 150 characters or fewer.");
-        else if (!NamePattern.IsMatch(model.Name))
-            result.AddError(nameof(model.Name), "Name may only contain letters, digits, underscores, and hyphens.");
-
-        if (model.InitialValue is not null && model.InitialValue.Length > 20_000)
-            result.AddError(nameof(model.InitialValue), "'Initial Value' must be 20000 characters or fewer.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Features/CreateTagRequest.cs

@@ -1,30 +1,16 @@
-using System.Text.RegularExpressions;
+using FluentValidation;
-using MicCheck.Api.Common.Validation;
 
 namespace MicCheck.Api.Features;
 
 public record CreateTagRequest(string Label, string Color);
 
-public class CreateTagRequestValidator : IModelValidator<CreateTagRequest>
+public class CreateTagRequestValidator : AbstractValidator<CreateTagRequest>
 {
-    private static readonly Regex ColorPattern = new("^#[0-9A-Fa-f]{3,6}$");
+    public CreateTagRequestValidator()
-
-    public ValidationResult Validate(CreateTagRequest model)
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Label).NotEmpty().MaximumLength(100);
-
+        RuleFor(x => x.Color).NotEmpty().MaximumLength(20)
-        if (string.IsNullOrEmpty(model.Label))
+            .Matches("^#[0-9A-Fa-f]{3,6}$")
-            result.AddError(nameof(model.Label), "'Label' must not be empty.");
+            .WithMessage("Color must be a valid hex color (e.g. #FF0000).");
-        else if (model.Label.Length > 100)
-            result.AddError(nameof(model.Label), "'Label' must be 100 characters or fewer.");
-
-        if (string.IsNullOrEmpty(model.Color))
-            result.AddError(nameof(model.Color), "'Color' must not be empty.");
-        else if (model.Color.Length > 20)
-            result.AddError(nameof(model.Color), "'Color' must be 20 characters or fewer.");
-        else if (!ColorPattern.IsMatch(model.Color))
-            result.AddError(nameof(model.Color), "Color must be a valid hex color (e.g. #FF0000).");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Features/DependencyRegistration.cs

@@ -1,20 +0,0 @@
-using MicCheck.Api.Features.Usage;
-
-namespace MicCheck.Api.Features;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddFeaturesServices(this IServiceCollection services)
-    {
-        services.AddScoped<FeatureEvaluationService>();
-        services.AddSingleton<FlagCache>();
-        services.AddScoped<FeatureService>();
-        services.AddScoped<FeatureStateService>();
-        services.AddScoped<FeatureSegmentService>();
-        services.AddScoped<TagService>();
-
-        services.AddFeatureUsageServices();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Features/FeatureEvaluationService.cs

@@ -1,5 +1,4 @@
 using MicCheck.Api.Data;
-using MicCheck.Api.Features.Usage;
 using MicCheck.Api.Identities;
 using MicCheck.Api.Segments;
 using Microsoft.EntityFrameworkCore;

src/api/MicCheck.Api/Features/FeatureService.cs

@@ -6,7 +6,7 @@ using Microsoft.EntityFrameworkCore;
 
 namespace MicCheck.Api.Features;
 
-public class FeatureService(IMicCheckDbContext db, IAuditService auditService, WebhookQueue webhookQueue)
+public class FeatureService(IMicCheckDbContext db, AuditService auditService, WebhookQueue webhookQueue)
 {
     private const int MaxFeaturesPerProject = 400;
 
@@ -23,7 +23,13 @@ public class FeatureService(IMicCheckDbContext db, IAuditService auditService, W
         return await db.Features.Include(f => f.Tags).FirstOrDefaultAsync(f => f.Id == id, ct);
     }
 
-    public async Task<Feature> CreateAsync(int projectId, string name, FeatureType type, string? initialValue, string? description, CancellationToken ct = default)
+    public async Task<Feature> CreateAsync(
+        int projectId,
+        string name,
+        FeatureType type,
+        string? initialValue,
+        string? description,
+        CancellationToken ct = default)
     {
         var count = await db.Features.CountAsync(f => f.ProjectId == projectId, ct);
         if (count >= MaxFeaturesPerProject)
@@ -72,7 +78,8 @@ public class FeatureService(IMicCheckDbContext db, IAuditService auditService, W
         return feature;
     }
 
-    public async Task<Feature> UpdateAsync(int id, string name, string? description, CancellationToken ct = default)
+    public async Task<Feature> UpdateAsync(
+        int id, string name, string? description, CancellationToken ct = default)
     {
         var feature = await db.Features.Include(f => f.Tags).FirstOrDefaultAsync(f => f.Id == id, ct)
             ?? throw new KeyNotFoundException($"Feature {id} not found.");
@@ -155,7 +162,11 @@ public class FeatureService(IMicCheckDbContext db, IAuditService auditService, W
                     EventType = WebhookEventTypes.FlagDeleted,
                     EnvironmentId = env.Id,
                     OrganizationId = project.OrganizationId,
-                    Data = new FlagDeletedData(null, DateTimeOffset.UtcNow, new FeatureSummary(feature.Id, feature.Name)) });
+                    Data = new FlagDeletedData(
+                        null,
+                        DateTimeOffset.UtcNow,
+                        new FeatureSummary(feature.Id, feature.Name))
+                });
             }
         }
     }

src/api/MicCheck.Api/Features/FeatureStateResult.cs

@@ -1,6 +1,6 @@
 namespace MicCheck.Api.Features;
 
-public record FeatureStateResult
+public class FeatureStateResult
 {
     public required Feature Feature { get; init; }
     public bool Enabled { get; init; }

src/api/MicCheck.Api/Features/FeatureStateService.cs

@@ -5,7 +5,7 @@ using Microsoft.EntityFrameworkCore;
 
 namespace MicCheck.Api.Features;
 
-public class FeatureStateService(IMicCheckDbContext db, WebhookQueue webhookQueue, IAuditService auditService)
+public class FeatureStateService(IMicCheckDbContext db, WebhookQueue webhookQueue, AuditService auditService)
 {
     public async Task<IReadOnlyList<FeatureState>> ListByEnvironmentAsync(int environmentId, CancellationToken ct = default)
     {

src/api/MicCheck.Api/Features/FeatureUsageBucketKey.cs

@@ -1,3 +1,3 @@
-namespace MicCheck.Api.Features.Usage;
+namespace MicCheck.Api.Features;
 
 public record struct FeatureUsageBucketKey(int EnvironmentId, int FeatureId, string FeatureName, DateOnly UsageDate);

src/api/MicCheck.Api/Features/FeatureUsageController.cs

@@ -4,7 +4,7 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.RateLimiting;
 using Microsoft.Extensions.Caching.Memory;
 
-namespace MicCheck.Api.Features.Usage;
+namespace MicCheck.Api.Features;
 
 [ApiController]
 [Route("api/v1/environment/{environmentId}/usage")]

src/api/MicCheck.Api/Features/FeatureUsageDaily.cs

@@ -0,0 +1,12 @@
+namespace MicCheck.Api.Features;
+
+public class FeatureUsageDaily
+{
+    public int Id { get; init; }
+    public int EnvironmentId { get; init; }
+    public int FeatureId { get; init; }
+    public required string FeatureName { get; set; }
+    public DateOnly UsageDate { get; init; }
+    public long Count { get; set; }
+    public DateTimeOffset UpdatedAt { get; set; }
+}

src/api/MicCheck.Api/Features/FeatureUsageFlushBackgroundService.cs

@@ -2,7 +2,7 @@ using System.Diagnostics.CodeAnalysis;
 using MicCheck.Api.Data;
 using Microsoft.EntityFrameworkCore;
 
-namespace MicCheck.Api.Features.Usage;
+namespace MicCheck.Api.Features;
 
 [ExcludeFromCodeCoverage(Justification = "Timer-driven BackgroundService that issues raw SQL through a DI-scoped concrete MicCheckDbContext; exercising it cleanly requires a live DB, which CLAUDE.md disallows (no WebApplicationFactory/InMemory). DrainAccumulated's bucketing logic is covered by FeatureUsageMetricsTests.")]
 public class FeatureUsageFlushBackgroundService(

src/api/MicCheck.Api/Features/FeatureUsageMetrics.cs

@@ -1,7 +1,7 @@
 using System.Collections.Concurrent;
 using System.Diagnostics.Metrics;
 
-namespace MicCheck.Api.Features.Usage;
+namespace MicCheck.Api.Features;
 
 public class FeatureUsageMetrics : IDisposable
 {

src/api/MicCheck.Api/Features/FeatureUsageQueryService.cs

@@ -1,7 +1,7 @@
 using MicCheck.Api.Data;
 using Microsoft.EntityFrameworkCore;
 
-namespace MicCheck.Api.Features.Usage;
+namespace MicCheck.Api.Features;
 
 public class FeatureUsageQueryService(IMicCheckDbContext db)
 {

src/api/MicCheck.Api/Features/FeatureUsageResponses.cs

@@ -1,7 +1,9 @@
-namespace MicCheck.Api.Features.Usage;
+namespace MicCheck.Api.Features;
 
 public record TopFeatureUsage(int FeatureId, string FeatureName, long Count);
 
 public record DailyUsage(DateOnly Date, long TotalCount, IReadOnlyList<TopFeatureUsage> Features);
 
-public record DashboardUsageResponse(IReadOnlyList<TopFeatureUsage> TopFeaturesLastDay, IReadOnlyList<DailyUsage> DailyUsage);
+public record DashboardUsageResponse(
+    IReadOnlyList<TopFeatureUsage> TopFeaturesLastDay,
+    IReadOnlyList<DailyUsage> DailyUsage);

src/api/MicCheck.Api/Features/FlagCache.cs

@@ -12,9 +12,11 @@ public class FlagCache(IMemoryCache cache)
         return flags;
     }
 
-    public void Set(int environmentId, IReadOnlyList<FeatureStateResult> flags) => cache.Set(CacheKey(environmentId), flags, CacheDuration);
+    public void Set(int environmentId, IReadOnlyList<FeatureStateResult> flags)
+        => cache.Set(CacheKey(environmentId), flags, CacheDuration);
 
-    public void Invalidate(int environmentId) => cache.Remove(CacheKey(environmentId));
+    public void Invalidate(int environmentId)
+        => cache.Remove(CacheKey(environmentId));
 
     private static string CacheKey(int environmentId) => $"flags:{environmentId}";
 }

src/api/MicCheck.Api/Features/Tag.cs

@@ -1,9 +1,9 @@
 namespace MicCheck.Api.Features;
 
-public record Tag
+public class Tag
 {
     public int Id { get; init; }
-    public required string Label { get; init; }
+    public required string Label { get; set; }
-    public required string Color { get; init; }
+    public required string Color { get; set; }
     public int ProjectId { get; init; }
 }

src/api/MicCheck.Api/Features/TagsController.cs

@@ -8,24 +8,23 @@ namespace MicCheck.Api.Features;
 [ApiController]
 [Authorize(Policy = AuthorizationPolicies.AdminApiAccess)]
 [EnableRateLimiting("AdminApi")]
-[Route("api/v1/project/{projectId}")]
 public class TagsController(TagService tagService) : ControllerBase
 {
-    [HttpGet("tags")]
+    [HttpGet("api/v1/project/{projectId}/tags")]
     public async Task<ActionResult<IReadOnlyList<TagResponse>>> List(int projectId, CancellationToken ct)
     {
         var tags = await tagService.ListByProjectAsync(projectId, ct);
         return Ok(tags.Select(TagResponse.From).ToList());
     }
 
-    [HttpPost("tags")]
+    [HttpPost("api/v1/project/{projectId}/tags")]
     public async Task<ActionResult<TagResponse>> Create(int projectId, CreateTagRequest request, CancellationToken ct)
     {
         var tag = await tagService.CreateAsync(projectId, request.Label, request.Color, ct);
         return CreatedAtAction(nameof(List), new { projectId }, TagResponse.From(tag));
     }
 
-    [HttpDelete("tag/{id}")]
+    [HttpDelete("api/v1/project/{projectId}/tag/{id}")]
     public async Task<IActionResult> Delete(int projectId, int id, CancellationToken ct)
     {
         var tag = await tagService.FindByIdAsync(id, ct);

src/api/MicCheck.Api/Features/UpdateFeatureRequest.cs

@@ -1,25 +1,20 @@
-using System.Text.RegularExpressions;
+using FluentValidation;
-using MicCheck.Api.Common.Validation;
 
 namespace MicCheck.Api.Features;
 
-public record UpdateFeatureRequest(string Name, string? Description);
+public record UpdateFeatureRequest(
+    string Name,
+    string? Description
+);
 
-public class UpdateFeatureRequestValidator : IModelValidator<UpdateFeatureRequest>
+public class UpdateFeatureRequestValidator : AbstractValidator<UpdateFeatureRequest>
 {
-    private static readonly Regex NamePattern = new("^[a-zA-Z0-9_-]+$");
+    public UpdateFeatureRequestValidator()
-
-    public ValidationResult Validate(UpdateFeatureRequest model)
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name)
-
+            .NotEmpty()
-        if (string.IsNullOrEmpty(model.Name))
+            .MaximumLength(150)
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
+            .Matches("^[a-zA-Z0-9_-]+$")
-        else if (model.Name.Length > 150)
+            .WithMessage("Name may only contain letters, digits, underscores, and hyphens.");
-            result.AddError(nameof(model.Name), "'Name' must be 150 characters or fewer.");
-        else if (!NamePattern.IsMatch(model.Name))
-            result.AddError(nameof(model.Name), "Name may only contain letters, digits, underscores, and hyphens.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Features/Usage/DependencyRegistration.cs

@@ -1,13 +0,0 @@
-namespace MicCheck.Api.Features.Usage;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddFeatureUsageServices(this IServiceCollection services)
-    {
-        services.AddSingleton<FeatureUsageMetrics>();
-        services.AddScoped<FeatureUsageQueryService>();
-        services.AddHostedService<FeatureUsageFlushBackgroundService>();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Features/Usage/FeatureUsageDaily.cs

@@ -1,12 +0,0 @@
-namespace MicCheck.Api.Features.Usage;
-
-public record FeatureUsageDaily
-{
-    public int Id { get; init; }
-    public int EnvironmentId { get; init; }
-    public int FeatureId { get; init; }
-    public required string FeatureName { get; init; }
-    public DateOnly UsageDate { get; init; }
-    public long Count { get; init; }
-    public DateTimeOffset UpdatedAt { get; init; }
-}

src/api/MicCheck.Api/Identities/DependencyRegistration.cs

@@ -1,12 +0,0 @@
-namespace MicCheck.Api.Identities;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddIdentitiesServices(this IServiceCollection services)
-    {
-        services.AddScoped<IdentityResolutionService>();
-        services.AddScoped<AdminIdentityService>();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/MicCheck.Api.csproj

@@ -9,6 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.0" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="10.0.5" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.5" />
     <PackageReference Include="Microsoft.OpenApi" Version="2.9.0" />

src/api/MicCheck.Api/Migrations/20260617194113_AddFeatureUsageDaily.Designer.cs

@@ -305,7 +305,7 @@ namespace MicCheck.Api.Migrations
                     b.ToTable("FeatureStates");
                 });
 
-            modelBuilder.Entity("MicCheck.Api.Features.Usage.FeatureUsageDaily", b =>
+            modelBuilder.Entity("MicCheck.Api.Features.FeatureUsageDaily", b =>
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()

src/api/MicCheck.Api/Migrations/MicCheckDbContextModelSnapshot.cs

@@ -302,7 +302,7 @@ namespace MicCheck.Api.Migrations
                     b.ToTable("FeatureStates");
                 });
 
-            modelBuilder.Entity("MicCheck.Api.Features.Usage.FeatureUsageDaily", b =>
+            modelBuilder.Entity("MicCheck.Api.Features.FeatureUsageDaily", b =>
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()

src/api/MicCheck.Api/Organizations/CreateOrganizationRequest.cs

@@ -1,20 +1,13 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Organizations;
 
 public record CreateOrganizationRequest(string Name);
 
-public class CreateOrganizationRequestValidator : IModelValidator<CreateOrganizationRequest>
+public class CreateOrganizationRequestValidator : AbstractValidator<CreateOrganizationRequest>
 {
-    public ValidationResult Validate(CreateOrganizationRequest model)
+    public CreateOrganizationRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
-
-        if (string.IsNullOrEmpty(model.Name))
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
-        else if (model.Name.Length > 200)
-            result.AddError(nameof(model.Name), "'Name' must be 200 characters or fewer.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Organizations/DependencyRegistration.cs

@@ -1,11 +0,0 @@
-namespace MicCheck.Api.Organizations;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddOrganizationsServices(this IServiceCollection services)
-    {
-        services.AddScoped<OrganizationService>();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Organizations/InviteUserRequest.cs

@@ -1,23 +1,15 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Organizations;
 
 public record InviteUserRequest(int UserId, string Role);
 
-public class InviteUserRequestValidator : IModelValidator<InviteUserRequest>
+public class InviteUserRequestValidator : AbstractValidator<InviteUserRequest>
 {
-    public ValidationResult Validate(InviteUserRequest model)
+    public InviteUserRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.UserId).GreaterThan(0);
-
+        RuleFor(x => x.Role).NotEmpty().Must(r => Enum.TryParse<OrganizationRole>(r, true, out _))
-        if (model.UserId <= 0)
+            .WithMessage("Role must be 'User' or 'Admin'.");
-            result.AddError(nameof(model.UserId), "'User Id' must be greater than 0.");
-
-        if (string.IsNullOrEmpty(model.Role))
-            result.AddError(nameof(model.Role), "'Role' must not be empty.");
-        else if (!Enum.TryParse<OrganizationRole>(model.Role, true, out _))
-            result.AddError(nameof(model.Role), "Role must be 'User' or 'Admin'.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Organizations/OrganizationService.cs

@@ -5,7 +5,7 @@ using Microsoft.EntityFrameworkCore;
 
 namespace MicCheck.Api.Organizations;
 
-public class OrganizationService(IMicCheckDbContext db, IAuditService auditService)
+public class OrganizationService(IMicCheckDbContext db, AuditService auditService)
 {
     public async Task<IReadOnlyList<(Organization Org, bool IsPrimary)>> ListForUserAsync(int userId, CancellationToken ct = default)
     {

src/api/MicCheck.Api/Organizations/UpdateOrganizationRequest.cs

@@ -1,20 +1,13 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Organizations;
 
 public record UpdateOrganizationRequest(string Name);
 
-public class UpdateOrganizationRequestValidator : IModelValidator<UpdateOrganizationRequest>
+public class UpdateOrganizationRequestValidator : AbstractValidator<UpdateOrganizationRequest>
 {
-    public ValidationResult Validate(UpdateOrganizationRequest model)
+    public UpdateOrganizationRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
-
-        if (string.IsNullOrEmpty(model.Name))
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
-        else if (model.Name.Length > 200)
-            result.AddError(nameof(model.Name), "'Name' must be 200 characters or fewer.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Program.cs

@@ -1,9 +1,11 @@
+using System.Text;
 using System.Threading.RateLimiting;
-using MicCheck.Api.Audit;
+using FluentValidation;
-using MicCheck.Api.Common;
+using FluentValidation.AspNetCore;
 using MicCheck.Api.Common.Security.ApiKeys;
+using MicCheck.Api.Audit;
+using MicCheck.Api.Common.Security.Authentication;
 using MicCheck.Api.Common.Security.Authorization;
-using MicCheck.Api.Common.Validation;
 using MicCheck.Api.Data;
 using MicCheck.Api.Environments;
 using MicCheck.Api.Features;
@@ -13,7 +15,14 @@ using MicCheck.Api.Projects;
 using MicCheck.Api.Segments;
 using MicCheck.Api.Users;
 using MicCheck.Api.Webhooks;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Authentication.JwtBearer;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.RateLimiting;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.IdentityModel.Tokens;
 using Scalar.AspNetCore;
 using Serilog;
 
@@ -33,12 +42,44 @@ try
               .WriteTo.Console());
 
     builder.Services.AddOpenApi();
-    builder.Services.AddControllers(options => options.Filters.Add<ModelValidationActionFilter>())
+    builder.Services.AddControllers()
         .AddJsonOptions(options =>
             options.JsonSerializerOptions.Converters.Add(
                 new System.Text.Json.Serialization.JsonStringEnumConverter()));
 
-    builder.Services.AddCommonServices(builder.Configuration);
+    builder.Services.AddAuthentication()
+        .AddScheme<AuthenticationSchemeOptions, EnvironmentKeyAuthenticationHandler>(
+            EnvironmentKeyAuthenticationHandler.SchemeName, _ => { })
+        .AddScheme<AuthenticationSchemeOptions, ApiKeyAuthenticationHandler>(
+            ApiKeyAuthenticationHandler.SchemeName, _ => { })
+        .AddJwtBearer(JwtBearerDefaults.AuthenticationScheme, options =>
+        {
+            options.TokenValidationParameters = new TokenValidationParameters
+            {
+                ValidateIssuer = true,
+                ValidateAudience = true,
+                ValidateIssuerSigningKey = true,
+                ValidIssuer = builder.Configuration["Jwt:Issuer"],
+                ValidAudience = builder.Configuration["Jwt:Audience"],
+                IssuerSigningKey = new SymmetricSecurityKey(
+                    Encoding.UTF8.GetBytes(builder.Configuration["Jwt:SecretKey"]!))
+            };
+        });
+
+    builder.Services.AddAuthorization(options =>
+    {
+        options.AddPolicy(AuthorizationPolicies.FlagsApiAccess, policy =>
+            policy.AddAuthenticationSchemes(EnvironmentKeyAuthenticationHandler.SchemeName)
+                  .RequireClaim("EnvironmentId"));
+
+        options.AddPolicy(AuthorizationPolicies.AdminApiAccess, policy =>
+            policy.AddAuthenticationSchemes(ApiKeyAuthenticationHandler.SchemeName, JwtBearerDefaults.AuthenticationScheme)
+                  .RequireAuthenticatedUser());
+
+        options.AddPolicy(AuthorizationPolicies.OrganizationAdmin, policy =>
+            policy.AddAuthenticationSchemes(ApiKeyAuthenticationHandler.SchemeName, JwtBearerDefaults.AuthenticationScheme)
+                  .RequireClaim("OrganizationRole", "Admin"));
+    });
 
     builder.Services.AddHttpContextAccessor();
 
@@ -51,20 +92,67 @@ try
             limiter.QueueLimit = 0;
         }));
 
+    builder.Services.AddFluentValidationAutoValidation();
+    builder.Services.AddValidatorsFromAssemblyContaining<Program>();
+
+    builder.Services.Configure<ApiBehaviorOptions>(options =>
+    {
+        options.InvalidModelStateResponseFactory = context =>
+        {
+            var errors = context.ModelState
+                .Where(e => e.Value?.Errors.Count > 0)
+                .ToDictionary(
+                    kvp => kvp.Key,
+                    kvp => kvp.Value!.Errors.Select(e => e.ErrorMessage).ToArray());
+            return new UnprocessableEntityObjectResult(new { errors });
+        };
+    });
+
     builder.Services.AddMemoryCache();
     builder.Services.AddMetrics();
 
-    builder.Services.AddAuditServices();
+    builder.Services.AddScoped<ITokenService, TokenService>();
-    builder.Services.AddIdentitiesServices();
+    builder.Services.AddScoped<AuthService>();
-    builder.Services.AddEnvironmentsServices();
+    builder.Services.AddScoped<ApiKeyService>();
-    builder.Services.AddSegmentsServices();
+    builder.Services.AddScoped<DatabaseSeeder>();
-    builder.Services.AddOrganizationsServices();
+    builder.Services.AddScoped<IPasswordHasher<User>, PasswordHasher<User>>();
-    builder.Services.AddProjectsServices();
+    builder.Services.AddScoped<IAuthorizationHandler, ProjectPermissionRequirementHandler>();
-    builder.Services.AddFeaturesServices();
+    builder.Services.AddScoped<FeatureEvaluationService>();
-    builder.Services.AddUsersServices();
+    builder.Services.AddScoped<IdentityResolutionService>();
-    builder.Services.AddWebhooksServices();
+    builder.Services.AddScoped<EnvironmentDocumentService>();
+    builder.Services.AddSingleton<SegmentEvaluator>();
+    builder.Services.AddSingleton<FlagCache>();
+    builder.Services.AddScoped<AuditService>();
+    builder.Services.AddScoped<AuditLogQueryService>();
+    builder.Services.AddScoped<OrganizationService>();
+    builder.Services.AddScoped<ProjectService>();
+    builder.Services.AddScoped<EnvironmentService>();
+    builder.Services.AddScoped<FeatureService>();
+    builder.Services.AddScoped<FeatureStateService>();
+    builder.Services.AddScoped<FeatureSegmentService>();
+    builder.Services.AddScoped<SegmentService>();
+    builder.Services.AddScoped<TagService>();
+    builder.Services.AddScoped<WebhookService>();
+    builder.Services.AddScoped<WebhookDispatcher>();
+    builder.Services.AddScoped<AdminIdentityService>();
+    builder.Services.AddScoped<UserService>();
+    builder.Services.AddSingleton<WebhookQueue>();
+    builder.Services.AddHostedService<WebhookBackgroundService>();
+    builder.Services.AddHostedService<WebhookRetryBackgroundService>();
+    builder.Services.AddSingleton<FeatureUsageMetrics>();
+    builder.Services.AddScoped<FeatureUsageQueryService>();
+    builder.Services.AddHostedService<FeatureUsageFlushBackgroundService>();
+    builder.Services.AddHttpClient("Webhooks", client =>
+        client.DefaultRequestHeaders.Add("User-Agent", "MicCheck-Webhook/1.0"));
 
-    builder.Services.AddDataServices(builder.Configuration);
+    var connectionString = builder.Configuration.GetConnectionString("miccheck")
+        ?? (System.Environment.GetEnvironmentVariable("DATABASE_URL") is { } databaseUrl
+            ? DatabaseUrlParser.ToNpgsqlConnectionString(databaseUrl)
+            : builder.Configuration.GetConnectionString("DefaultConnection")!);
+
+    builder.Services.AddDbContext<MicCheckDbContext>(options =>
+        options.UseNpgsql(connectionString));
+    builder.Services.AddScoped<IMicCheckDbContext>(sp => sp.GetRequiredService<MicCheckDbContext>());
 
     var app = builder.Build();
 

src/api/MicCheck.Api/Projects/CreateProjectRequest.cs

@@ -1,23 +1,14 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Projects;
 
 public record CreateProjectRequest(string Name, int OrganizationId);
 
-public class CreateProjectRequestValidator : IModelValidator<CreateProjectRequest>
+public class CreateProjectRequestValidator : AbstractValidator<CreateProjectRequest>
 {
-    public ValidationResult Validate(CreateProjectRequest model)
+    public CreateProjectRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
-
+        RuleFor(x => x.OrganizationId).GreaterThan(0);
-        if (string.IsNullOrEmpty(model.Name))
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
-        else if (model.Name.Length > 200)
-            result.AddError(nameof(model.Name), "'Name' must be 200 characters or fewer.");
-
-        if (model.OrganizationId <= 0)
-            result.AddError(nameof(model.OrganizationId), "'Organization Id' must be greater than 0.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Projects/DependencyRegistration.cs

@@ -1,11 +0,0 @@
-namespace MicCheck.Api.Projects;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddProjectsServices(this IServiceCollection services)
-    {
-        services.AddScoped<ProjectService>();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Projects/ProjectService.cs

@@ -5,7 +5,7 @@ using Microsoft.EntityFrameworkCore;
 
 namespace MicCheck.Api.Projects;
 
-public class ProjectService(IMicCheckDbContext db, IAuditService auditService)
+public class ProjectService(IMicCheckDbContext db, AuditService auditService)
 {
     public async Task<IReadOnlyList<Project>> ListByOrganizationAsync(int organizationId, CancellationToken ct = default)
     {

src/api/MicCheck.Api/Projects/SetUserPermissionsRequest.cs

@@ -1,25 +1,17 @@
+using FluentValidation;
 using MicCheck.Api.Common.Security.Authorization;
-using MicCheck.Api.Common.Validation;
 
 namespace MicCheck.Api.Projects;
 
 public record SetUserPermissionsRequest(int UserId, bool IsAdmin, List<string> Permissions);
 
-public class SetUserPermissionsRequestValidator : IModelValidator<SetUserPermissionsRequest>
+public class SetUserPermissionsRequestValidator : AbstractValidator<SetUserPermissionsRequest>
 {
-    public ValidationResult Validate(SetUserPermissionsRequest model)
+    public SetUserPermissionsRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.UserId).GreaterThan(0);
-
+        RuleForEach(x => x.Permissions)
-        if (model.UserId <= 0)
+            .Must(p => Enum.TryParse<ProjectPermission>(p, true, out _))
-            result.AddError(nameof(model.UserId), "'User Id' must be greater than 0.");
+            .WithMessage("Invalid permission value.");
-
-        foreach (var permission in model.Permissions)
-        {
-            if (!Enum.TryParse<ProjectPermission>(permission, true, out _))
-                result.AddError(nameof(model.Permissions), "Invalid permission value.");
-        }
-
-        return result;
     }
 }

src/api/MicCheck.Api/Projects/UpdateProjectRequest.cs

@@ -1,20 +1,13 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Projects;
 
 public record UpdateProjectRequest(string Name, bool HideDisabledFlags);
 
-public class UpdateProjectRequestValidator : IModelValidator<UpdateProjectRequest>
+public class UpdateProjectRequestValidator : AbstractValidator<UpdateProjectRequest>
 {
-    public ValidationResult Validate(UpdateProjectRequest model)
+    public UpdateProjectRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
-
-        if (string.IsNullOrEmpty(model.Name))
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
-        else if (model.Name.Length > 200)
-            result.AddError(nameof(model.Name), "'Name' must be 200 characters or fewer.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Segments/CreateSegmentRequest.cs

@@ -1,4 +1,4 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Segments;
 
@@ -16,38 +16,24 @@ public record CreateSegmentRequest(
     string Name,
     IReadOnlyList<CreateSegmentRuleRequest> Rules);
 
-public class CreateSegmentRequestValidator : IModelValidator<CreateSegmentRequest>
+public class CreateSegmentRequestValidator : AbstractValidator<CreateSegmentRequest>
 {
-    public ValidationResult Validate(CreateSegmentRequest model)
+    public CreateSegmentRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
-
+        RuleFor(x => x.Rules).NotNull();
-        if (string.IsNullOrEmpty(model.Name))
+        RuleForEach(x => x.Rules).ChildRules(rule =>
-            result.AddError(nameof(model.Name), "'Name' must not be empty.");
-        else if (model.Name.Length > 200)
-            result.AddError(nameof(model.Name), "'Name' must be 200 characters or fewer.");
-
-        if (model.Rules is null)
         {
-            result.AddError(nameof(model.Rules), "'Rules' must not be empty.");
+            rule.RuleFor(r => r.Type)
-            return result;
+                .Must(t => Enum.TryParse<SegmentRuleType>(t, true, out _))
-        }
+                .WithMessage("Rule type must be 'All', 'Any', or 'None'.");
-
+            rule.RuleForEach(r => r.Conditions).ChildRules(cond =>
-        foreach (var rule in model.Rules)
             {
-            if (!Enum.TryParse<SegmentRuleType>(rule.Type, true, out _))
+                cond.RuleFor(c => c.Property).NotEmpty();
-                result.AddError(nameof(model.Rules), "Rule type must be 'All', 'Any', or 'None'.");
+                cond.RuleFor(c => c.Operator)
-
+                    .Must(o => Enum.TryParse<SegmentConditionOperator>(o, true, out _))
-            foreach (var condition in rule.Conditions)
+                    .WithMessage("Invalid operator.");
-            {
+            });
-                if (string.IsNullOrEmpty(condition.Property))
+        });
-                    result.AddError(nameof(model.Rules), "'Property' must not be empty.");
-
-                if (!Enum.TryParse<SegmentConditionOperator>(condition.Operator, true, out _))
-                    result.AddError(nameof(model.Rules), "Invalid operator.");
-            }
-        }
-
-        return result;
     }
 }

src/api/MicCheck.Api/Segments/DependencyRegistration.cs

@@ -1,12 +0,0 @@
-namespace MicCheck.Api.Segments;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddSegmentsServices(this IServiceCollection services)
-    {
-        services.AddSingleton<SegmentEvaluator>();
-        services.AddScoped<SegmentService>();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Segments/SegmentService.cs

@@ -9,7 +9,7 @@ public record SegmentConditionDefinition(string Property, SegmentConditionOperat
 
 public record SegmentRuleDefinition(SegmentRuleType Type, IReadOnlyList<SegmentConditionDefinition> Conditions, IReadOnlyList<SegmentRuleDefinition>? ChildRules = null);
 
-public class SegmentService(IMicCheckDbContext db, IAuditService auditService)
+public class SegmentService(IMicCheckDbContext db, AuditService auditService)
 {
     private const int MaxSegmentsPerProject = 100;
     private const int MaxConditionsPerSegment = 100;

src/api/MicCheck.Api/Users/DependencyRegistration.cs

@@ -1,14 +0,0 @@
-using Microsoft.AspNetCore.Identity;
-
-namespace MicCheck.Api.Users;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddUsersServices(this IServiceCollection services)
-    {
-        services.AddScoped<UserService>();
-        services.AddScoped<IPasswordHasher<User>, PasswordHasher<User>>();
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Webhooks/CreateWebhookRequest.cs

@@ -1,22 +1,14 @@
-using MicCheck.Api.Common.Validation;
+using FluentValidation;
 
 namespace MicCheck.Api.Webhooks;
 
 public record CreateWebhookRequest(string Url, string? Secret, bool Enabled);
 
-public class CreateWebhookRequestValidator : IModelValidator<CreateWebhookRequest>
+public class CreateWebhookRequestValidator : AbstractValidator<CreateWebhookRequest>
 {
-    public ValidationResult Validate(CreateWebhookRequest model)
+    public CreateWebhookRequestValidator()
     {
-        var result = new ValidationResult();
+        RuleFor(x => x.Url).NotEmpty().MaximumLength(500).Must(u => Uri.TryCreate(u, UriKind.Absolute, out _))
-
+            .WithMessage("Url must be a valid absolute URL.");
-        if (string.IsNullOrEmpty(model.Url))
-            result.AddError(nameof(model.Url), "'Url' must not be empty.");
-        else if (model.Url.Length > 500)
-            result.AddError(nameof(model.Url), "'Url' must be 500 characters or fewer.");
-        else if (!Uri.TryCreate(model.Url, UriKind.Absolute, out _))
-            result.AddError(nameof(model.Url), "Url must be a valid absolute URL.");
-
-        return result;
     }
 }

src/api/MicCheck.Api/Webhooks/DependencyRegistration.cs

@@ -1,17 +0,0 @@
-namespace MicCheck.Api.Webhooks;
-
-public static class DependencyRegistration
-{
-    public static IServiceCollection AddWebhooksServices(this IServiceCollection services)
-    {
-        services.AddScoped<WebhookService>();
-        services.AddScoped<WebhookDispatcher>();
-        services.AddSingleton<WebhookQueue>();
-        services.AddHostedService<WebhookBackgroundService>();
-        services.AddHostedService<WebhookRetryBackgroundService>();
-        services.AddHttpClient("Webhooks", client =>
-            client.DefaultRequestHeaders.Add("User-Agent", "MicCheck-Webhook/1.0"));
-
-        return services;
-    }
-}

src/api/MicCheck.Api/Webhooks/WebhookEvent.cs

@@ -1,6 +1,6 @@
 namespace MicCheck.Api.Webhooks;
 
-public record WebhookEvent
+public class WebhookEvent
 {
     public required string EventType { get; init; }
     public int? EnvironmentId { get; init; }

tests/api/MicCheck.Api.Tests.Unit/Admin/AdminApiIntegrationTests.cs

@@ -23,7 +23,7 @@ public class AdminApiIntegrationTests
     private List<FeatureState> _featureStates = null!;
     private List<AppEnvironment> _environments = null!;
     private List<Segment> _segments = null!;
-    private Mock<IAuditService> _auditService = null!;
+    private Mock<AuditService> _auditService = null!;
     private int _organizationId;
 
     [SetUp]
@@ -50,7 +50,7 @@ public class AdminApiIntegrationTests
         _db.SetupDbSetWithGeneratedIds(c => c.SegmentConditions, []);
 
         var webhookQueue = new WebhookQueue();
-        _auditService = new Mock<IAuditService>();
+        _auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         _auditService.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Audit/AuditLogsControllerTests.cs

@@ -46,7 +46,7 @@ public class AuditLogsControllerTests
         _db.SetupDbSet(c => c.AuditLogs, _auditLogs);
         _db.SetupDbSet(c => c.Users, []);
 
-        var auditServiceMock = new Mock<IAuditService>();
+        var auditServiceMock = new Mock<AuditService>(_db.Object, null!, new MicCheck.Api.Webhooks.WebhookQueue());
         var auditService = auditServiceMock.Object;
 
         _controller = new AuditLogsController(

tests/api/MicCheck.Api.Tests.Unit/Environments/EnvironmentServiceTests.cs

@@ -45,7 +45,7 @@ public class EnvironmentServiceTests
         _db.SetupDbSet(c => c.Identities, _identities);
 
         var webhookQueue = new MicCheck.Api.Webhooks.WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Environments/EnvironmentsControllerTests.cs

@@ -113,7 +113,7 @@ public class EnvironmentsControllerTests
         _db.SetupDbSet(c => c.Users, []);
 
         var webhookQueue = new WebhookQueue();
-        var auditServiceMock = new Mock<IAuditService>();
+        var auditServiceMock = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditServiceMock.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Features/FeatureEvaluationServiceTests.cs

@@ -1,7 +1,6 @@
 using System.Diagnostics.Metrics;
 using MicCheck.Api.Data;
 using MicCheck.Api.Features;
-using MicCheck.Api.Features.Usage;
 using MicCheck.Api.Identities;
 using MicCheck.Api.Segments;
 using MicCheck.Api.Tests.Unit.TestSupport;

tests/api/MicCheck.Api.Tests.Unit/Features/FeatureServiceTests.cs

@@ -45,7 +45,7 @@ public class FeatureServiceTests
         _db.SetupDbSetWithGeneratedIds(c => c.Tags, _tags);
 
         var webhookQueue = new MicCheck.Api.Webhooks.WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.RecordAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Features/FeatureStateServiceTests.cs

@@ -43,7 +43,7 @@ public class FeatureStateServiceTests
         _db.SetupDbSetWithGeneratedIds(c => c.FeatureStates, _featureStates);
 
         var webhookQueue = new WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.RecordAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),
@@ -154,7 +154,7 @@ public class FeatureStateServiceTests
         var state = AddState();
         var queue = new WebhookQueue();
 
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, queue);
         auditService.Setup(a => a.RecordAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Features/FeatureUsageControllerTests.cs

@@ -1,12 +1,12 @@
 using MicCheck.Api.Data;
-using MicCheck.Api.Features.Usage;
+using MicCheck.Api.Features;
 using MicCheck.Api.Tests.Unit.TestSupport;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Caching.Memory;
 using Moq;
 using NUnit.Framework;
 
-namespace MicCheck.Api.Tests.Unit.Features.Usage;
+namespace MicCheck.Api.Tests.Unit.Features;
 
 [TestFixture]
 public class FeatureUsageControllerTests

tests/api/MicCheck.Api.Tests.Unit/Features/FeatureUsageMetricsTests.cs

@@ -1,9 +1,9 @@
 using System.Diagnostics.Metrics;
-using MicCheck.Api.Features.Usage;
+using MicCheck.Api.Features;
 using Moq;
 using NUnit.Framework;
 
-namespace MicCheck.Api.Tests.Unit.Features.Usage;
+namespace MicCheck.Api.Tests.Unit.Features;
 
 [TestFixture]
 public class FeatureUsageMetricsTests

tests/api/MicCheck.Api.Tests.Unit/Features/FeatureUsageQueryServiceTests.cs

@@ -1,10 +1,10 @@
 using MicCheck.Api.Data;
-using MicCheck.Api.Features.Usage;
+using MicCheck.Api.Features;
 using MicCheck.Api.Tests.Unit.TestSupport;
 using Moq;
 using NUnit.Framework;
 
-namespace MicCheck.Api.Tests.Unit.Features.Usage;
+namespace MicCheck.Api.Tests.Unit.Features;
 
 [TestFixture]
 public class FeatureUsageQueryServiceTests

tests/api/MicCheck.Api.Tests.Unit/Features/FeaturesControllerTests.cs

@@ -41,7 +41,7 @@ public class FeaturesControllerTests
         _db.SetupDbSetWithGeneratedIds(c => c.Tags, _tags);
 
         var webhookQueue = new MicCheck.Api.Webhooks.WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.RecordAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Features/FlagsApiIntegrationTests.cs

@@ -2,7 +2,6 @@ using System.Security.Claims;
 using MicCheck.Api.Data;
 using MicCheck.Api.Environments;
 using MicCheck.Api.Features;
-using MicCheck.Api.Features.Usage;
 using MicCheck.Api.Identities;
 using MicCheck.Api.Projects;
 using MicCheck.Api.Segments;

tests/api/MicCheck.Api.Tests.Unit/Identities/IdentitiesControllerTests.cs

@@ -2,7 +2,6 @@ using System.Security.Claims;
 using MicCheck.Api.Data;
 using MicCheck.Api.Environments;
 using MicCheck.Api.Features;
-using MicCheck.Api.Features.Usage;
 using MicCheck.Api.Identities;
 using MicCheck.Api.Projects;
 using MicCheck.Api.Segments;

tests/api/MicCheck.Api.Tests.Unit/Organizations/OrganizationServiceTests.cs

@@ -41,7 +41,7 @@ public class OrganizationServiceTests
         _db.SetupDbSet(c => c.Users, _users);
 
         var webhookQueue = new MicCheck.Api.Webhooks.WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Organizations/OrganizationsControllerTests.cs

@@ -49,7 +49,7 @@ public class OrganizationsControllerTests
         _db.SetupDbSetWithGeneratedIds(c => c.Webhooks, _webhooks);
 
         var webhookQueue = new WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Projects/ProjectServiceTests.cs

@@ -32,7 +32,7 @@ public class ProjectServiceTests
         _db.SetupDbSet(c => c.UserProjectPermissions, _permissions);
 
         var webhookQueue = new MicCheck.Api.Webhooks.WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Projects/ProjectsControllerTests.cs

@@ -34,7 +34,7 @@ public class ProjectsControllerTests
         _db.SetupDbSet(c => c.UserProjectPermissions, _permissions);
 
         var webhookQueue = new MicCheck.Api.Webhooks.WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Segments/SegmentServiceTests.cs

@@ -40,7 +40,7 @@ public class SegmentServiceTests
         _db.SetupDbSetWithGeneratedIds(c => c.SegmentConditions, _segmentConditions);
 
         var webhookQueue = new MicCheck.Api.Webhooks.WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),

tests/api/MicCheck.Api.Tests.Unit/Segments/SegmentsControllerTests.cs

@@ -41,7 +41,7 @@ public class SegmentsControllerTests
         _db.SetupDbSetWithGeneratedIds(c => c.SegmentConditions, _segmentConditions);
 
         var webhookQueue = new MicCheck.Api.Webhooks.WebhookQueue();
-        var auditService = new Mock<IAuditService>();
+        var auditService = new Mock<AuditService>(_db.Object, null!, webhookQueue);
         auditService.Setup(a => a.LogAsync(
             It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(),
             It.IsAny<int>(), It.IsAny<int?>(), It.IsAny<int?>(),