Update documentation to reflect new architecture and previous refactors

docs/website/diagrams-src/architecture.puml

@@ -4,41 +4,67 @@ skinparam backgroundColor #FFFFFF
 skinparam defaultFontName Arial
 skinparam packageStyle rectangle
 
-title The Biergarten App - Layered Architecture
+title The Biergarten App - Vertical Slice Architecture
 
-package "API Layer" #E3F2FD {
-  [API.Core\nASP.NET Core Web API] as API
+package "API.Core (thin host)" #E3F2FD {
+  [API.Core\nASP.NET Core Web API host] as API
   note right of API
-    - Controllers (Auth, User)
-    - Swagger/OpenAPI
-    - Middleware
-    - Health Checks
+    - Program.cs wiring only
+    - MediatR + AddApplicationPart
+      per Features.* assembly
+    - Swagger/OpenAPI, health checks
+    - JWT auth middleware
+    - Global exception filter
   end note
 }
 
-package "Service Layer" #F3E5F5 {
-  [Service.Auth] as AuthSvc
-  [Service.UserManagement] as UserSvc
-  note right of AuthSvc
-    - Business Logic
-    - Validation
-    - Orchestration
+package "Feature Slices" #F3E5F5 {
+  [Features.Auth] as AuthSlice
+  [Features.Breweries] as BrewerySlice
+  [Features.UserManagement] as UserSlice
+  [Features.Emails] as EmailsSlice
+  note right of AuthSlice
+    Each slice owns its own:
+    - Controller (HTTP endpoints)
+    - Commands/Queries + Handlers
+    - Validators
+    - Repository
+  end note
+  note right of EmailsSlice
+    No controller - invoked only
+    via MediatR commands sent
+    from other slices
+  end note
+}
+
+package "Shared" #FCE4EC {
+  [Shared.Contracts] as SharedContracts
+  [Shared.Application] as SharedApp
+  note right of SharedApp
+    - ValidationBehavior
+      (MediatR pipeline)
+    - Cross-slice email commands
+      (SendRegistrationEmailCommand,
+      SendResendConfirmationEmailCommand)
   end note
 }
 
 package "Infrastructure Layer" #FFF3E0 {
-  [Infrastructure.Repository] as Repo
+  [Infrastructure.Sql] as Sql
   [Infrastructure.Jwt] as JWT
   [Infrastructure.PasswordHashing] as PwdHash
   [Infrastructure.Email] as Email
+  [Infrastructure.Email.Templates] as EmailTemplates
 }
 
 package "Domain Layer" #E8F5E9 {
   [Domain.Entities] as Domain
+  [Domain.Exceptions] as DomainExceptions
   note right of Domain
     - UserAccount
     - UserCredential
     - UserVerification
+    - BreweryPost
   end note
 }
 
@@ -48,28 +74,53 @@ database "SQL Server" {
 }
 
 ' Relationships
-API --> AuthSvc
-API --> UserSvc
+API ..> AuthSlice : AddApplicationPart\n+ MediatR scan
+API ..> BrewerySlice : AddApplicationPart\n+ MediatR scan
+API ..> UserSlice : AddApplicationPart\n+ MediatR scan
+API ..> EmailsSlice : MediatR scan only\n(no controller)
 
-AuthSvc --> Repo
-AuthSvc --> JWT
-AuthSvc --> PwdHash
-AuthSvc --> Email
+AuthSlice --> Sql
+AuthSlice --> JWT
+AuthSlice --> PwdHash
+AuthSlice --> SharedContracts
+AuthSlice --> SharedApp
 
-UserSvc --> Repo
+BrewerySlice --> Sql
+BrewerySlice --> SharedContracts
+BrewerySlice --> SharedApp
 
-Repo --> SP
-Repo --> Domain
+UserSlice --> Sql
+UserSlice --> SharedContracts
+UserSlice --> SharedApp
+
+EmailsSlice --> Email
+EmailsSlice --> EmailTemplates
+EmailsSlice --> SharedApp
+
+' The one cross-slice interaction: a MediatR command contract, not a project reference
+AuthSlice ..> SharedApp : sends\nSendRegistrationEmailCommand
+EmailsSlice ..> SharedApp : handles\nSendRegistrationEmailCommand
+
+Sql --> SP
+Sql --> Domain
 SP --> Tables
 
-AuthSvc --> Domain
-UserSvc --> Domain
+AuthSlice --> Domain
+BrewerySlice --> Domain
+UserSlice --> Domain
+AuthSlice --> DomainExceptions
 
 ' Notes
-note left of Repo
+note left of Sql
   SQL-first approach
   All queries via
   stored procedures
 end note
 
+note bottom of AuthSlice
+  No Features.* project
+  ever references another
+  Features.* project directly
+end note
+
 @enduml

docs/website/diagrams-src/deployment.puml

@@ -112,38 +112,32 @@ package "Test Environment\n(docker-compose.test.yaml)" #FFF3E0 {
     end note
   }
 
-  node "Infrastructure.Repository.Tests\n(Unit Tests)" as RepoTests {
-    component "xUnit + DbMocker" as RepoComp
+  node "unit.tests\n(Features.*.Tests, one container)" as UnitTests {
+    component "xUnit + Moq + DbMocker" as UnitComp
     note right
-      Tests:
-      - AuthRepository
-      - UserAccountRepository
-      - SQL command building
+      Builds Dockerfile.tests, which
+      restores/builds against Core.slnx
+      then runs `dotnet test` for every
+      Features/*.Tests project in turn:
+      - Features.Auth.Tests
+      - Features.Breweries.Tests
+      - Features.UserManagement.Tests
+      - Features.Emails.Tests
 
-      Uses: Mock connections
+      Uses: Moq for handlers,
+      DbMocker for repositories
       No real database needed
     end note
   }
 
-  node "Service.Auth.Tests\n(Unit Tests)" as SvcTests {
-    component "xUnit + Moq" as SvcComp
-    note right
-      Tests:
-      - RegisterService
-      - LoginService
-      - Token generation
-
-      Uses: Mocked dependencies
-      No database or infrastructure
-    end note
-  }
-
 }
 
 folder "test-results/\n(mounted volume)" as Results {
   file "api-specs/\n  results.trx" as Result1
-  file "repository-tests/\n  results.trx" as Result2
-  file "service-auth-tests/\n  results.trx" as Result3
+  file "Features.Auth.Tests.trx" as Result2
+  file "Features.Breweries.Tests.trx" as Result3
+  file "Features.UserManagement.Tests.trx" as Result4
+  file "Features.Emails.Tests.trx" as Result5
 
   note bottom
     TRX format
@@ -170,17 +164,16 @@ DevAPI .up.> DevSeed : depends_on
 TestMig --> TestDB : 1. Migrate
 TestSeed --> TestDB : 2. Seed
 Specs --> TestDB : 3. Integration test
-RepoTests ..> TestDB : Mock (no connection)
-SvcTests ..> TestDB : Mock (no connection)
+UnitTests ..> TestDB : depends_on for startup\nordering only (Moq/DbMocker,\nno real connection)
 
 TestMig .up.> TestDB : depends_on
 TestSeed .up.> TestMig : depends_on
 Specs .up.> TestSeed : depends_on
+UnitTests .up.> TestSeed : depends_on
 
 ' Test results export
 Specs --> Results : Export TRX
-RepoTests --> Results : Export TRX
-SvcTests --> Results : Export TRX
+UnitTests --> Results : Export TRX (one .trx per slice)
 
 ' Network notes
 note bottom of DevDB