Build: Updated nightly E2E test pipeline schedule in v16 (#22805)

Updated nightly E2E test pipeline schedule

.editorconfig

@@ -102,7 +102,7 @@ dotnet_style_predefined_type_for_locals_parameters_members = true:warning
 dotnet_style_predefined_type_for_member_access = true:warning
 # Modifier preferences
 # https://docs.microsoft.com/visualstudio/ide/editorconfig-language-conventions#normalize-modifiers
-dotnet_style_require_accessibility_modifiers = for_non_interface_members:warning
+dotnet_style_require_accessibility_modifiers = always:warning
 csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async:warning
 visual_basic_preferred_modifier_order = Partial,Default,Private,Protected,Public,Friend,NotOverridable,Overridable,MustOverride,Overloads,Overrides,MustInherit,NotInheritable,Static,Shared,Shadows,ReadOnly,WriteOnly,Dim,Const,WithEvents,Widening,Narrowing,Custom,Async:warning
 dotnet_style_readonly_field = true:warning

.github/BUILD.md

@@ -9,7 +9,7 @@ In order to use Umbraco as a CMS and build your website with it, you should not
 -   Are you about to [create a pull request for Umbraco][contribution guidelines]?
 -   Are you trying to get to the bottom of a problem in your existing Umbraco installation?
 
-If the answer is yes, please read on. Otherwise, make sure to head on over [to the releases page](https://releases.umbraco.com) and start using Umbraco CMS as intended.
+If the answer is yes, please read on. Otherwise, make sure to head on over [to the download page](https://our.umbraco.com/download) and start using Umbraco CMS as intended.
 
 ## Table of contents
 
@@ -79,12 +79,13 @@ Conversely, if you are working on front-end only, you want to build the back-end
 "AuthorizeCallbackLogoutPathName": "/logout",
 "AuthorizeCallbackErrorPathName": "/error",
 "BackOfficeTokenCookie": {
+  "Enabled": true,
   "SameSite": "None"
 }
 ```
 
 > [!NOTE]
-> If you get stuck in a login loop, try clearing your browser cookies for localhost, and make sure that the `Umbraco:Cms:Security:BackOfficeTokenCookie:SameSite` setting is set to `None`.
+> If you get stuck in a login loop, try clearing your browser cookies for localhost, and make sure that the `BackOfficeTokenCookie` settings are correct. Namely, that `SameSite` should be set to `None` when running the front-end server separately.
 
 Then run Umbraco from the command line.
 

.github/CONTRIBUTING.md

@@ -30,7 +30,7 @@ This guide describes each step to make your first contribution:
 
    Create a new branch based on `main` and name it after the issue you're fixing. For example: `v15/bugfix/18132-rte-tinymce-onchange-value-check`.
 
-   Please follow this format for branches: `v{major}/{feature|bugfix|task|qa|improvement}/{issue}-{description}`.
+   Please follow this format for branches: `v{major}/{feature|bugfix|task}/{issue}-{description}`.
 
    This is a development branch for the particular issue you're working on, in this case, a bug-fix for issue number `18132` that affects Umbraco v.15.
 

.github/contributing-first-issue.md

@@ -24,7 +24,7 @@ Great question! The short version goes like this:
 
 1. **Switch to the correct branch**
 
-    Switch to the `main` branch
+    Switch to the `contrib` branch
 
 1. **Build**
 
@@ -32,7 +32,7 @@ Great question! The short version goes like this:
 
 1. **Branch**
 
-    Create a new branch now and name it after the issue you're fixing, we usually follow the format: `temp-12345`. This means it's a temporary branch for the particular issue you're working on, in this case issue number `12345`.  Don't commit to `main`, create a new branch first.
+    Create a new branch now and name it after the issue you're fixing, we usually follow the format: `temp-12345`. This means it's a temporary branch for the particular issue you're working on, in this case issue number `12345`.  Don't commit to `contrib`, create a new branch first.
 
 1. **Change**
 
@@ -42,7 +42,7 @@ Great question! The short version goes like this:
 
     Done? Yay! 🎉
 
-    Remember to commit to your new `temp` branch, and don't commit to `main`. Then you can push the changes up to your fork on GitHub.
+    Remember to commit to your new `temp` branch, and don't commit to `contrib`. Then you can push the changes up to your fork on GitHub.
 
 #### Keeping your Umbraco fork in sync with the main repository
 [sync fork]: #keeping-your-umbraco-fork-in-sync-with-the-main-repository
@@ -59,10 +59,10 @@ Then when you want to get the changes from the main repository:
 
 ```
 git fetch upstream
-git rebase upstream/main
+git rebase upstream/contrib
 ```
 
-In this command we're syncing with the `main` branch, but you can of course choose another one if needed.
+In this command we're syncing with the `contrib` branch, but you can of course choose another one if needed.
 
 [More information on how this works can be found on the thoughtbot blog.][sync fork ext]
 
@@ -79,7 +79,7 @@ You can get in touch with [the core contributors team][core collabs] in multiple
 
 - If there's an existing issue on the issue tracker then that's a good place to leave questions and discuss how to start or move forward.
 - If you want to ask questions on some code you've already written you can create a draft pull request, [detailed in a GitHub blog post][draft prs].
-- Unsure where to start? Did something not work as expected? Try leaving a note in the [forum][forum]. The team monitors that one closely, so one of us will be on hand and ready to point you in the right direction.
+- Unsure where to start? Did something not work as expected? Try leaving a note in the ["Contributing to Umbraco"][contrib forum] forum. The team monitors that one closely, so one of us will be on hand and ready to point you in the right direction.
 
 
   <!-- Local -->
@@ -90,7 +90,7 @@ You can get in touch with [the core contributors team][core collabs] in multiple
 
 [sync fork ext]: http://robots.thoughtbot.com/post/5133345960/keeping-a-git-fork-updated	"Details on keeping a git fork updated"
 [draft prs]: https://github.blog/2019-02-14-introducing-draft-pull-requests/	"Github's blog post providing details on draft pull requests"
-[forum]: https://forum.umbraco.com/
+[contrib forum]: https://our.umbraco.com/forum/contributing-to-umbraco-cms/
 [Umbraco CMS repo]: https://github.com/umbraco/Umbraco-CMS
 [up for grabs issues]: https://github.com/umbraco/Umbraco-CMS/issues?q=is%3Aissue+is%3Aopen+label%3Acommunity%2Fup-for-grabs
 [issue tracker]: https://github.com/umbraco/Umbraco-CMS/issues

.github/contributing-localization.md

@@ -115,7 +115,7 @@ Save the changes and return to the Backoffice to see the update.
 
 
 
-1. Commit your changes to a new temporary branch (avoid committing directly to `main`). 
+1. Commit your changes to a new temporary branch (avoid committing directly to `contrib`). 
 
 2. Push the changes to your fork on GitHub.
 

.github/copilot-instructions.md

@@ -6,101 +6,91 @@ Always reference these instructions first and fallback to search or bash command
 
 Bootstrap, build, and test the repository:
 
--   Install .NET SDK (version specified in global.json):
-    -   `curl -sSL https://dot.net/v1/dotnet-install.sh | bash /dev/stdin --version $(jq -r '.sdk.version' global.json)`
-    -   `export PATH="/home/runner/.dotnet:$PATH"`
--   Install Node.js (version specified in src/Umbraco.Web.UI.Client/.nvmrc):
-    -   `curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.0/install.sh | bash`
-    -   `export NVM_DIR="$HOME/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"`
-    -   `nvm install $(cat src/Umbraco.Web.UI.Client/.nvmrc) && nvm use $(cat src/Umbraco.Web.UI.Client/.nvmrc)`
--   Fix shallow clone issue (required for GitVersioning):
-    -   `git fetch --unshallow`
--   Restore packages:
-    -   `dotnet restore` -- takes 50 seconds. NEVER CANCEL. Set timeout to 90+ seconds.
--   Build the solution:
-    -   `dotnet build` -- takes 4.5 minutes. NEVER CANCEL. Set timeout to 10+ minutes.
--   Install and build frontend:
-    -   `cd src/Umbraco.Web.UI.Client`
-    -   `npm ci --no-fund --no-audit --prefer-offline` -- takes 11 seconds.
-    -   `npm run build:for:cms` -- takes 1.25 minutes. NEVER CANCEL. Set timeout to 5+ minutes.
--   Install and build Login
-    -   `cd src/Umbraco.Web.UI.Login`
-    -   `npm ci --no-fund --no-audit --prefer-offline`
-    -   `npm run build`
--   Run the application:
-    -   `cd src/Umbraco.Web.UI`
-    -   `dotnet run --no-build` -- Application runs on https://localhost:44339 and http://localhost:11000
-
-Check out [BUILD.md](./BUILD.md) for more detailed instructions.
+- Install .NET SDK (version specified in global.json):
+  - `curl -sSL https://dot.net/v1/dotnet-install.sh | bash /dev/stdin --version $(jq -r '.sdk.version' global.json)`
+  - `export PATH="/home/runner/.dotnet:$PATH"`
+- Install Node.js (version specified in src/Umbraco.Web.UI.Client/.nvmrc):
+  - `curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.0/install.sh | bash`
+  - `export NVM_DIR="$HOME/.nvm" && [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"`
+  - `nvm install $(cat src/Umbraco.Web.UI.Client/.nvmrc) && nvm use $(cat src/Umbraco.Web.UI.Client/.nvmrc)`
+- Fix shallow clone issue (required for GitVersioning):
+  - `git fetch --unshallow`
+- Restore packages:
+  - `dotnet restore` -- takes 50 seconds. NEVER CANCEL. Set timeout to 90+ seconds.
+- Build the solution:
+  - `dotnet build` -- takes 4.5 minutes. NEVER CANCEL. Set timeout to 10+ minutes.
+- Install and build frontend:
+  - `cd src/Umbraco.Web.UI.Client`
+  - `npm ci --no-fund --no-audit --prefer-offline` -- takes 11 seconds.
+  - `npm run build:for:cms` -- takes 1.25 minutes. NEVER CANCEL. Set timeout to 5+ minutes.
+- Install and build Login
+  - `cd src/Umbraco.Web.UI.Login`
+  - `npm ci --no-fund --no-audit --prefer-offline`
+  - `npm run build`
+- Run the application:
+  - `cd src/Umbraco.Web.UI`
+  - `dotnet run --no-build` -- Application runs on https://localhost:44339 and http://localhost:11000
 
 ## Validation
 
--   ALWAYS run through at least one complete end-to-end scenario after making changes.
--   Build and unit tests must pass before committing changes.
--   Frontend build produces output in src/Umbraco.Web.UI.Client/dist-cms/ which gets copied to src/Umbraco.Web.UI/wwwroot/umbraco/backoffice/
--   Always run `dotnet build` and `npm run build:for:cms` before running the application to see your changes.
--   For login-only changes, you can run `npm run build` from src/Umbraco.Web.UI.Login and then `dotnet run --no-build` from src/Umbraco.Web.UI.
--   For frontend-only changes, you can run `npm run dev:server` from src/Umbraco.Web.UI.Client for hot reloading.
--   Frontend changes should be linted using `npm run lint:fix` which uses Eslint.
+- ALWAYS run through at least one complete end-to-end scenario after making changes.
+- Build and unit tests must pass before committing changes.
+- Frontend build produces output in src/Umbraco.Web.UI.Client/dist-cms/ which gets copied to src/Umbraco.Web.UI/wwwroot/umbraco/backoffice/
+- Always run `dotnet build` and `npm run build:for:cms` before running the application to see your changes.
+- For login-only changes, you can run `npm run build` from src/Umbraco.Web.UI.Login and then `dotnet run --no-build` from src/Umbraco.Web.UI.
+- For frontend-only changes, you can run `npm run dev:server` from src/Umbraco.Web.UI.Client for hot reloading.
+- Frontend changes should be linted using `npm run lint:fix` which uses Eslint.
 
 ## Testing
 
 ### Unit Tests (.NET)
-
--   Location: tests/Umbraco.Tests.UnitTests/
--   Run: `dotnet test tests/Umbraco.Tests.UnitTests/Umbraco.Tests.UnitTests.csproj --configuration Release --verbosity minimal`
--   Duration: ~1 minute with 3,343 tests
--   NEVER CANCEL: Set timeout to 5+ minutes
+- Location: tests/Umbraco.Tests.UnitTests/
+- Run: `dotnet test tests/Umbraco.Tests.UnitTests/Umbraco.Tests.UnitTests.csproj --configuration Release --verbosity minimal`
+- Duration: ~1 minute with 3,343 tests
+- NEVER CANCEL: Set timeout to 5+ minutes
 
 ### Integration Tests (.NET)
-
--   Location: tests/Umbraco.Tests.Integration/
--   Run: `dotnet test tests/Umbraco.Tests.Integration/Umbraco.Tests.Integration.csproj --configuration Release --verbosity minimal`
--   NEVER CANCEL: Set timeout to 10+ minutes
+- Location: tests/Umbraco.Tests.Integration/
+- Run: `dotnet test tests/Umbraco.Tests.Integration/Umbraco.Tests.Integration.csproj --configuration Release --verbosity minimal`
+- NEVER CANCEL: Set timeout to 10+ minutes
 
 ### Frontend Tests
-
--   Location: src/Umbraco.Web.UI.Client/
--   Run: `npm test` (requires `npx playwright install` first)
--   Frontend tests use Web Test Runner with Playwright
+- Location: src/Umbraco.Web.UI.Client/
+- Run: `npm test` (requires `npx playwright install` first)
+- Frontend tests use Web Test Runner with Playwright
 
 ### Acceptance Tests (E2E)
-
--   Location: tests/Umbraco.Tests.AcceptanceTest/
--   Requires running Umbraco application and configuration
--   See tests/Umbraco.Tests.AcceptanceTest/README.md for detailed setup (requires `npx playwright install` first)
+- Location: tests/Umbraco.Tests.AcceptanceTest/
+- Requires running Umbraco application and configuration
+- See tests/Umbraco.Tests.AcceptanceTest/README.md for detailed setup (requires `npx playwright install` first)
 
 ## Project Structure
 
 The solution contains 30 C# projects organized as follows:
 
 ### Main Application Projects
-
--   **Umbraco.Web.UI**: Main web application project (startup project)
--   **Umbraco.Web.UI.Client**: TypeScript frontend (backoffice)
--   **Umbraco.Web.UI.Login**: Separate login screen frontend
--   **Umbraco.Core**: Core domain models and interfaces
--   **Umbraco.Infrastructure**: Data access and infrastructure
--   **Umbraco.Cms**: Main CMS package
+- **Umbraco.Web.UI**: Main web application project (startup project)
+- **Umbraco.Web.UI.Client**: TypeScript frontend (backoffice)
+- **Umbraco.Web.UI.Login**: Separate login screen frontend
+- **Umbraco.Core**: Core domain models and interfaces
+- **Umbraco.Infrastructure**: Data access and infrastructure
+- **Umbraco.Cms**: Main CMS package
 
 ### API Projects
-
--   **Umbraco.Cms.Api.Management**: Management API
--   **Umbraco.Cms.Api.Delivery**: Content Delivery API
--   **Umbraco.Cms.Api.Common**: Shared API components
+- **Umbraco.Cms.Api.Management**: Management API
+- **Umbraco.Cms.Api.Delivery**: Content Delivery API
+- **Umbraco.Cms.Api.Common**: Shared API components
 
 ### Persistence Projects
-
--   **Umbraco.Cms.Persistence.SqlServer**: SQL Server support
--   **Umbraco.Cms.Persistence.Sqlite**: SQLite support
--   **Umbraco.Cms.Persistence.EFCore**: Entity Framework Core abstractions
+- **Umbraco.Cms.Persistence.SqlServer**: SQL Server support
+- **Umbraco.Cms.Persistence.Sqlite**: SQLite support
+- **Umbraco.Cms.Persistence.EFCore**: Entity Framework Core abstractions
 
 ### Test Projects
-
--   **Umbraco.Tests.UnitTests**: Unit tests
--   **Umbraco.Tests.Integration**: Integration tests
--   **Umbraco.Tests.AcceptanceTest**: End-to-end tests with Playwright
--   **Umbraco.Tests.Common**: Shared test utilities
+- **Umbraco.Tests.UnitTests**: Unit tests
+- **Umbraco.Tests.Integration**: Integration tests
+- **Umbraco.Tests.AcceptanceTest**: End-to-end tests with Playwright
+- **Umbraco.Tests.Common**: Shared test utilities
 
 ## Common Tasks
 
@@ -108,7 +98,6 @@ The solution contains 30 C# projects organized as follows:
 
 **Production Mode (Standard Development)**
 Use this for backend development, testing full builds, or when you don't need hot reloading:
-
 1. Build frontend assets: `cd src/Umbraco.Web.UI.Client && npm run build:for:cms`
 2. Run backend: `cd src/Umbraco.Web.UI && dotnet run --no-build`
 3. Access backoffice: `https://localhost:44339/umbraco`
@@ -116,17 +105,17 @@ Use this for backend development, testing full builds, or when you don't need ho
 
 **Vite Dev Server Mode (Frontend Development with Hot Reload)**
 Use this for frontend-only development with hot module reloading:
-
 1. Configure backend for frontend development - Add to `src/Umbraco.Web.UI/appsettings.json` under `Umbraco:CMS:Security`:
-    ```json
-    "BackOfficeHost": "http://localhost:5173",
-    "AuthorizeCallbackPathName": "/oauth_complete",
-    "AuthorizeCallbackLogoutPathName": "/logout",
-    "AuthorizeCallbackErrorPathName": "/error",
-    "BackOfficeTokenCookie": {
-      "SameSite": "None"
-    }
-    ```
+   ```json
+   "BackOfficeHost": "http://localhost:5173",
+   "AuthorizeCallbackPathName": "/oauth_complete",
+   "AuthorizeCallbackLogoutPathName": "/logout",
+   "AuthorizeCallbackErrorPathName": "/error",
+   "BackOfficeTokenCookie": {
+     "Enabled": true,
+     "SameSite": "None"
+   }
+   ```
 2. Run backend: `cd src/Umbraco.Web.UI && dotnet run --no-build`
 3. Run frontend dev server: `cd src/Umbraco.Web.UI.Client && npm run dev:server`
 4. Access backoffice: `http://localhost:5173/` (no `/umbraco` prefix)
@@ -135,48 +124,39 @@ Use this for frontend-only development with hot module reloading:
 **Important:** Remove the `BackOfficeHost` configuration before committing or switching back to production mode.
 
 ### Backend-Only Development
-
 For backend-only changes, disable frontend builds:
-
--   Comment out the target named "BuildStaticAssetsPreconditions" in src/Umbraco.Cms.StaticAssets.csproj:
-    ```
-    <!--<Target Name="BuildStaticAssetsPreconditions" BeforeTargets="AssignTargetPaths">
-      [...]
-    </Target>-->
-    ```
--   Remember to uncomment before committing
+- Comment out the target named "BuildStaticAssetsPreconditions" in src/Umbraco.Cms.StaticAssets.csproj:
+  ```
+  <!--<Target Name="BuildStaticAssetsPreconditions" BeforeTargets="AssignTargetPaths">
+    [...]
+  </Target>-->
+  ```
+- Remember to uncomment before committing
 
 ### Building NuGet Packages
-
 To build custom NuGet packages for testing:
-
 ```bash
 dotnet pack -c Release -o Build.Out
 dotnet nuget add source [Path to Build.Out folder] -n MyLocalFeed
 ```
 
 ### Regenerating Frontend API Types
-
 When changing Management API:
-
 ```bash
 cd src/Umbraco.Web.UI.Client
 npm run generate:server-api-dev
 ```
-
 Also update OpenApi.json from /umbraco/swagger/management/swagger.json
 
 ## Database Setup
 
 Default configuration supports SQLite for development. For production-like testing:
-
--   Use SQL Server/LocalDb for better performance
--   Configure connection string in src/Umbraco.Web.UI/appsettings.json
+- Use SQL Server/LocalDb for better performance
+- Configure connection string in src/Umbraco.Web.UI/appsettings.json
 
 ## Clean Up / Reset
 
 To reset development environment:
-
 ```bash
 # Remove configuration and database
 rm src/Umbraco.Web.UI/appsettings.json
@@ -188,31 +168,31 @@ git clean -xdf .
 
 ## Version Information
 
--   Target Framework: .NET (version specified in global.json)
--   Current Version: (specified in version.json)
--   Node.js Requirement: (specified in src/Umbraco.Web.UI.Client/.nvmrc)
--   npm Requirement: Latest compatible version
+- Target Framework: .NET (version specified in global.json)
+- Current Version: (specified in version.json)
+- Node.js Requirement: (specified in src/Umbraco.Web.UI.Client/.nvmrc)
+- npm Requirement: Latest compatible version
 
 ## Known Issues
 
--   Build requires full git history (not shallow clone) due to GitVersioning
--   Some NuGet package security warnings are expected (SixLabors.ImageSharp vulnerabilities)
--   Frontend tests require Playwright browser installation: `npx playwright install`
--   Older Node.js versions may show engine compatibility warnings (check .nvmrc for current requirement)
+- Build requires full git history (not shallow clone) due to GitVersioning
+- Some NuGet package security warnings are expected (SixLabors.ImageSharp vulnerabilities)
+- Frontend tests require Playwright browser installation: `npx playwright install`
+- Older Node.js versions may show engine compatibility warnings (check .nvmrc for current requirement)
 
 ## Timing Expectations
 
 **NEVER CANCEL** these operations - they are expected to take time:
 
-| Operation               | Expected Time | Timeout Setting |
-| ----------------------- | ------------- | --------------- |
-| `dotnet restore`        | 50 seconds    | 90+ seconds     |
-| `dotnet build`          | 4.5 minutes   | 10+ minutes     |
-| `npm ci`                | 11 seconds    | 30+ seconds     |
-| `npm run build:for:cms` | 1.25 minutes  | 5+ minutes      |
-| `npm test`              | 2 minutes     | 5+ minutes      |
-| `npm run lint`          | 1 minute      | 5+ minutes      |
-| Unit tests              | 1 minute      | 5+ minutes      |
-| Integration tests       | Variable      | 10+ minutes     |
+| Operation | Expected Time | Timeout Setting |
+|-----------|--------------|-----------------|
+| `dotnet restore` | 50 seconds | 90+ seconds |
+| `dotnet build` | 4.5 minutes | 10+ minutes |
+| `npm ci` | 11 seconds | 30+ seconds |
+| `npm run build:for:cms` | 1.25 minutes | 5+ minutes |
+| `npm test` | 2 minutes | 5+ minutes |
+| `npm run lint` | 1 minute | 5+ minutes |
+| Unit tests | 1 minute | 5+ minutes |
+| Integration tests | Variable | 10+ minutes |
 
-Always wait for commands to complete rather than canceling and retrying.
+Always wait for commands to complete rather than canceling and retrying.

.github/workflows/azure-backoffice.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches:
       - main
-      - release/*
       - v*/dev
       - v*/main
     paths:
@@ -16,7 +15,6 @@ on:
     types: [opened, synchronize, reopened, closed]
     branches:
       - main
-      - release/*
       - v*/dev
       - v*/main
   workflow_dispatch:

.gitignore

@@ -95,10 +95,6 @@ tools/docfx/
 /tests/Umbraco.Tests.Integration/[Uu]mbraco/[Ll]ogs/
 /tests/Umbraco.Tests.Integration/Views/
 /tests/Umbraco.Tests.UnitTests/[Uu]mbraco/[Dd]ata/TEMP/
-/BenchmarkDotNet.Artifacts/
-playwright-report
-trace.zip
-/tests/Umbraco.Tests.AcceptanceTest/results
 
 # Ignore auto-generated schema
 /src/Umbraco.Cms.Targets/tasks/
@@ -111,3 +107,5 @@ trace.zip
 /tests/Umbraco.Tests.Integration/appsettings-schema.*.json
 /tests/Umbraco.Tests.Integration/umbraco-package-schema.json
 /src/Umbraco.Cms/appsettings-schema.json
+playwright-report
+trace.zip

.vscode/launch.json

@@ -107,6 +107,7 @@
         "UMBRACO__CMS__SECURITY__AUTHORIZECALLBACKLOGOUTPATHNAME": "/logout",
         "UMBRACO__CMS__SECURITY__AUTHORIZECALLBACKERRORPATHNAME": "/error",
         "UMBRACO__CMS__SECURITY__KEEPUSERLOGGEDIN": "true",
+        "UMBRACO__CMS__SECURITY__BACKOFFICETOKENCOOKIE__ENABLED": "true",
         "UMBRACO__CMS__SECURITY__BACKOFFICETOKENCOOKIE__SAMESITE": "None"
       },
       "sourceFileMap": {

.vscode/settings.json

@@ -1,9 +1,5 @@
 {
   "cSpell.words": [
-    "backoffice",
-    "pickable",
-    "Pickable",
-    "Umbraco",
     "unprovide",
     "Unproviding"
   ],

CLAUDE.md

@@ -1,381 +0,0 @@
-# Umbraco CMS - Multi-Project Repository
-
-Enterprise-grade CMS built on .NET 10.0. This repository contains 21 production projects organized in a layered architecture with clear separation of concerns.
-
-**Repository**: https://github.com/umbraco/Umbraco-CMS
-**License**: MIT
-**Main Branch**: `main`
-
----
-
-## 1. Overview
-
-### What This Repository Contains
-
-**21 Production Projects** organized in 3 main categories:
-
-1. **Core Architecture** (Domain & Infrastructure)
-   - `Umbraco.Core` - Interface contracts, domain models, notifications
-   - `Umbraco.Infrastructure` - Service implementations, data access, caching
-
-2. **Web & APIs** (Presentation Layer)
-   - `Umbraco.Web.UI` - Main ASP.NET Core web application
-   - `Umbraco.Web.Common` - Shared web functionality, controllers, middleware
-   - `Umbraco.Cms.Api.Management` - Backoffice Management API (REST)
-   - `Umbraco.Cms.Api.Delivery` - Content Delivery API (headless)
-   - `Umbraco.Cms.Api.Common` - Shared API infrastructure
-
-3. **Specialized Features** (Pluggable Modules)
-   - Persistence: EF Core (modern), NPoco (legacy) for SQL Server & SQLite
-   - Caching: `PublishedCache.HybridCache` (in-memory + distributed)
-   - Search: `Examine.Lucene` (full-text search)
-   - Imaging: `Imaging.ImageSharp` v1 & v2 (image processing)
-   - Other: Static assets, targets, development tools
-
-**6 Test Projects**:
-- `Umbraco.Tests.Common` - Shared test utilities
-- `Umbraco.Tests.UnitTests` - Unit tests
-- `Umbraco.Tests.Integration` - Integration tests
-- `Umbraco.Tests.Benchmarks` - Performance benchmarks
-- `Umbraco.Tests.AcceptanceTest` - E2E tests
-- `Umbraco.Tests.AcceptanceTest.UmbracoProject` - Test instance
-
-### Key Technologies
-
-- **.NET 10.0** - Target framework for all projects
-- **ASP.NET Core** - Web framework
-- **Entity Framework Core** - Modern ORM
-- **OpenIddict** - OAuth 2.0/OpenID Connect authentication
-- **Swashbuckle** - OpenAPI/Swagger documentation
-- **Lucene.NET** - Full-text search via Examine
-- **ImageSharp** - Image processing
-
----
-
-## 2. Repository Structure
-
-```
-Umbraco-CMS/
-├── src/                                    # 21 production projects
-│   ├── Umbraco.Core/                      # Domain contracts (interfaces only)
-│   │   └── CLAUDE.md                      # ⭐ Core architecture guide
-│   ├── Umbraco.Infrastructure/            # Service implementations
-│   ├── Umbraco.Web.Common/                # Web utilities
-│   ├── Umbraco.Web.UI/                    # Main web application
-│   ├── Umbraco.Cms.Api.Management/        # Management API
-│   ├── Umbraco.Cms.Api.Delivery/          # Delivery API (headless)
-│   ├── Umbraco.Cms.Api.Common/            # Shared API infrastructure
-│   │   └── CLAUDE.md                      # ⭐ API patterns guide
-│   ├── Umbraco.PublishedCache.HybridCache/ # Content caching
-│   ├── Umbraco.Examine.Lucene/            # Search indexing
-│   ├── Umbraco.Cms.Persistence.EFCore/    # EF Core data access
-│   ├── Umbraco.Cms.Persistence.EFCore.Sqlite/
-│   ├── Umbraco.Cms.Persistence.EFCore.SqlServer/
-│   ├── Umbraco.Cms.Persistence.Sqlite/    # Legacy SQLite
-│   ├── Umbraco.Cms.Persistence.SqlServer/ # Legacy SQL Server
-│   ├── Umbraco.Cms.Imaging.ImageSharp/    # Image processing v1
-│   ├── Umbraco.Cms.Imaging.ImageSharp2/   # Image processing v2
-│   ├── Umbraco.Cms.StaticAssets/          # Embedded assets
-│   ├── Umbraco.Cms.DevelopmentMode.Backoffice/
-│   ├── Umbraco.Cms.Targets/               # NuGet targets
-│   └── Umbraco.Cms/                       # Meta-package
-│
-├── tests/                                  # 6 test projects
-│   ├── Umbraco.Tests.Common/
-│   ├── Umbraco.Tests.UnitTests/
-│   ├── Umbraco.Tests.Integration/
-│   ├── Umbraco.Tests.Benchmarks/
-│   ├── Umbraco.Tests.AcceptanceTest/
-│   └── Umbraco.Tests.AcceptanceTest.UmbracoProject/
-│
-├── templates/                              # Project templates
-│   └── Umbraco.Templates/
-│
-├── tools/                                  # Build tools
-│   └── Umbraco.JsonSchema/
-│
-├── umbraco.sln                            # Main solution file
-├── Directory.Build.props                  # Shared build configuration
-├── Directory.Packages.props               # Centralized package versions
-├── .editorconfig                          # Code style
-└── .globalconfig                          # Roslyn analyzers
-```
-
-### Architecture Layers
-
-**Dependency Flow** (unidirectional, always flows inward):
-
-```
-Web.UI → Web.Common → Infrastructure → Core
-                ↓
-          Api.Management → Api.Common → Infrastructure → Core
-                ↓
-          Api.Delivery → Api.Common → Infrastructure → Core
-```
-
-**Key Principle**: Core has NO dependencies (pure contracts). Infrastructure implements Core. Web/APIs depend on Infrastructure.
-
-### Project Dependencies
-
-**Core Layer**:
-- `Umbraco.Core` → No dependencies (only Microsoft.Extensions.*)
-
-**Infrastructure Layer**:
-- `Umbraco.Infrastructure` → `Umbraco.Core`
-- `Umbraco.PublishedCache.*` → `Umbraco.Infrastructure`
-- `Umbraco.Examine.Lucene` → `Umbraco.Infrastructure`
-- `Umbraco.Cms.Persistence.*` → `Umbraco.Infrastructure`
-
-**Web Layer**:
-- `Umbraco.Web.Common` → `Umbraco.Infrastructure` + caching + search
-- `Umbraco.Web.UI` → `Umbraco.Web.Common` + all features
-
-**API Layer**:
-- `Umbraco.Cms.Api.Common` → `Umbraco.Web.Common`
-- `Umbraco.Cms.Api.Management` → `Umbraco.Cms.Api.Common`
-- `Umbraco.Cms.Api.Delivery` → `Umbraco.Cms.Api.Common`
-
----
-
-## 3. Teamwork & Collaboration
-
-### Branching Strategy
-
-- **Main branch**: `main` (protected)
-- **Branch naming convention**: `v<version>/<type>/<description>`
-
-**Format**: `v{major-version}/{type}/{kebab-case-description}`
-
-**Version**: Read from `version.json` in the repository root. Use the major version number (e.g., `v17` for version 17.x.x).
-
-**Types**:
-| Type | Use Case |
-|------|----------|
-| `feature` | New feature being introduced to the product |
-| `bugfix` | Fix to an existing issue with the product |
-| `qa` | Adding or updating unit, integration, or end-to-end tests |
-| `improvement` | Update to something that already exists but isn't broken (UI finessing, refactoring) |
-| `task` | Update that doesn't directly impact product behavior (dependency updates, build pipeline) |
-
-**Description**: A short, kebab-case description (a few words). This should be prefixed with the GitHub issue number if the update is related to resolving a tracked issue.
-
-**Examples**:
-```
-v17/bugfix/12345-correct-display-of-pending-migrations
-v17/feature/add-webhook-support
-v17/improvement/optimize-content-cache
-v17/qa/add-media-service-tests
-v17/task/update-ef-core-dependency
-```
-
-See `.github/CONTRIBUTING.md` for full guidelines.
-
-### Pull Request Process
-
-- **PR Template**: `.github/pull_request_template.md`
-- **Required CI Checks**:
-  - All tests pass
-  - Code formatting (dotnet format)
-  - No build warnings
-- **Merge Strategy**: Squash and merge (via GitHub UI)
-- **Reviews**: Required from code owners
-
-#### PR Naming Convention
-
-Use the format: `Area: Description (closes #IssueID)`
-
-**Examples**:
-| Area | Description | Issue |
-|------|-------------|-------|
-| Relations: | Move persistence of relations from repository into notification handlers | (closes #00000) |
-| Management API: | Correct the population of the parent for sibling items when retrieved under a folder | |
-| Docs: | Updated contributing guidelines to welcome contributions on bugfixes | |
-
-**Area**: The feature or aspect affected (e.g., UFM, TipTap, Docs, Segmentation, Migrations). Helps readers quickly understand what is being changed.
-
-**Description Best Practices**:
-- Include the area of change (Relations, Management API, etc.)
-- Describe the change and its impact
-- Be specific, not vague (describe "a golden retriever" not just "a dog")
-
-**Issue Linking**: Add `(closes #IssueID)` to auto-close linked issues on merge.
-
-### Commit Messages
-
-Follow Conventional Commits format:
-```
-<type>(<scope>): <description>
-
-Types: feat, fix, docs, style, refactor, test, chore
-Scope: project name (core, web, api, etc.)
-
-Examples:
-feat(core): add IContentService.GetByIds method
-fix(api): resolve null reference in schema handler
-docs(web): update routing documentation
-```
-
-### Code Owners
-
-Project ownership is distributed across teams. Check individual project directories for ownership.
-
----
-
-## 4. Architecture Patterns
-
-### Core Architectural Decisions
-
-1. **Layered Architecture with Dependency Inversion**
-   - Core defines contracts (interfaces)
-   - Infrastructure implements contracts
-   - Web/APIs consume implementations via DI
-
-2. **Interface-First Design**
-   - All services defined as interfaces in Core
-   - Enables testing, polymorphism, extensibility
-
-3. **Notification Pattern** (not C# events)
-   - See `/src/Umbraco.Core/CLAUDE.md` → "2. Notification System (Event Handling)"
-
-4. **Composer Pattern** (DI registration)
-   - See `/src/Umbraco.Core/CLAUDE.md` → "3. Composer Pattern (DI Registration)"
-
-5. **Scoping Pattern** (Unit of Work)
-   - See `/src/Umbraco.Core/CLAUDE.md` → "5. Scoping Pattern (Unit of Work)"
-
-6. **Attempt Pattern** (operation results)
-   - `Attempt<TResult, TStatus>` instead of exceptions
-   - Strongly-typed operation status enums
-
-### Key Design Patterns Used
-
-- **Repository Pattern** - Data access abstraction
-- **Unit of Work** - Scoping for transactions
-- **Builder Pattern** - `ProblemDetailsBuilder` for API errors
-- **Strategy Pattern** - OpenAPI handlers (schema ID, operation ID)
-- **Options Pattern** - All configuration via `IOptions<T>`
-- **Factory Pattern** - Content type factories
-- **Mediator Pattern** - Notification aggregator
-
----
-
-## 5. Project-Specific Notes
-
-### Centralized Package Management
-
-**All NuGet package versions** are centralized in `Directory.Packages.props`. Individual projects do NOT specify versions.
-
-```xml
-<!-- Individual projects reference WITHOUT version -->
-<PackageReference Include="Swashbuckle.AspNetCore" />
-
-<!-- Versions defined in Directory.Packages.props -->
-<PackageVersion Include="Swashbuckle.AspNetCore" Version="6.5.0" />
-```
-
-### Build Configuration
-
-- `Directory.Build.props` - Shared properties (target framework, company, copyright)
-- `.editorconfig` - Code style rules
-- `.globalconfig` - Roslyn analyzer rules
-
-### Persistence Layer - NPoco and EF Core
-
-The repository contains BOTH (actively supported):
-- **Current**: NPoco-based persistence (`Umbraco.Cms.Persistence.Sqlite`, `Umbraco.Cms.Persistence.SqlServer`) - widely used and fully supported
-- **Future**: EF Core-based persistence (`Umbraco.Cms.Persistence.EFCore.*`) - migration in progress
-
-**Note**: The codebase is actively migrating to EF Core, but NPoco remains the primary persistence layer and is not deprecated. Both are fully supported.
-
-### Authentication: OpenIddict
-
-All APIs use **OpenIddict** (OAuth 2.0/OpenID Connect):
-- Reference tokens (not JWT) for better security
-- **Secure cookie-based token storage** (v17+) - tokens stored in HTTP-only cookies with `__Host-` prefix
-- Tokens are redacted from client-side responses and passed via secure cookies only
-- ASP.NET Core Data Protection for token encryption
-- Configured in `Umbraco.Cms.Api.Common`
-- API requests must include credentials (`credentials: include` for fetch)
-
-**Load Balancing Requirement**: All servers must share the same Data Protection key ring.
-
-### Content Caching Strategy
-
-**HybridCache** (`Umbraco.PublishedCache.HybridCache`):
-- In-memory cache + distributed cache support
-- Published content only (not draft)
-- Invalidated via notifications and cache refreshers
-
-### API Versioning
-
-APIs use `Asp.Versioning.Mvc`:
-- Management API: `/umbraco/management/api/v{version}/*`
-- Delivery API: `/umbraco/delivery/api/v{version}/*`
-- OpenAPI/Swagger docs per version
-
-### Known Limitations
-
-1. **Circular Dependencies**: Avoided via `Lazy<T>` or event notifications
-2. **Multi-Server**: Requires shared Data Protection key ring and synchronized clocks (NTP)
-3. **Database Support**: SQL Server, SQLite
-
----
-
-## Quick Reference
-
-### Essential Commands
-
-```bash
-# Build solution
-dotnet build
-
-# Run all tests
-dotnet test
-
-# Run specific test category
-dotnet test --filter "Category=Integration"
-
-# Format code
-dotnet format
-
-# Pack all projects
-dotnet pack -c Release
-```
-
-### Key Projects
-
-| Project | Type | Description |
-|---------|------|-------------|
-| **Umbraco.Core** | Library | Interface contracts and domain models |
-| **Umbraco.Infrastructure** | Library | Service implementations and data access |
-| **Umbraco.Web.UI** | Application | Main web application (Razor/MVC) |
-| **Umbraco.Cms.Api.Management** | Library | Management API (backoffice) |
-| **Umbraco.Cms.Api.Delivery** | Library | Delivery API (headless CMS) |
-| **Umbraco.Cms.Api.Common** | Library | Shared API infrastructure |
-| **Umbraco.PublishedCache.HybridCache** | Library | Published content caching |
-| **Umbraco.Examine.Lucene** | Library | Full-text search indexing |
-
-### Important Files
-
-- **Solution**: `umbraco.sln`
-- **Build Config**: `Directory.Build.props`, `Directory.Packages.props`
-- **Code Style**: `.editorconfig`, `.globalconfig`
-- **Documentation**: `/CLAUDE.md`, `/src/Umbraco.Core/CLAUDE.md`, `/src/Umbraco.Cms.Api.Common/CLAUDE.md`
-
-### Project-Specific Documentation
-
-For detailed information about individual projects, see their CLAUDE.md files:
-- **Core Architecture**: `/src/Umbraco.Core/CLAUDE.md` - Service contracts, notification patterns
-- **API Infrastructure**: `/src/Umbraco.Cms.Api.Common/CLAUDE.md` - OpenAPI, authentication, serialization
-
-### Getting Help
-
-- **Official Docs**: https://docs.umbraco.com/
-- **Contributing Guide**: `.github/CONTRIBUTING.md`
-- **Issues**: https://github.com/umbraco/Umbraco-CMS/issues
-- **Community**: https://forum.umbraco.com/
-- **Releases**: https://releases.umbraco.com/
-
----
-
-**This repository follows a layered architecture with strict dependency rules. The Core defines contracts, Infrastructure implements them, and Web/APIs consume them. Each layer can be understood independently, but dependencies always flow inward toward Core.**

Directory.Build.props

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project>
   <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <Company>Umbraco HQ</Company>
     <Authors>Umbraco</Authors>
     <Copyright>Copyright © Umbraco $([System.DateTime]::Today.ToString('yyyy'))</Copyright>
@@ -41,7 +41,7 @@
   <PropertyGroup>
     <GenerateCompatibilitySuppressionFile>false</GenerateCompatibilitySuppressionFile>
     <EnablePackageValidation>true</EnablePackageValidation>
-    <PackageValidationBaselineVersion>17.0.0</PackageValidationBaselineVersion>
+    <PackageValidationBaselineVersion>16.0.0</PackageValidationBaselineVersion>
     <EnableStrictModeForCompatibleFrameworksInPackage>true</EnableStrictModeForCompatibleFrameworksInPackage>
     <EnableStrictModeForCompatibleTfms>true</EnableStrictModeForCompatibleTfms>
   </PropertyGroup>

Directory.Packages.props

@@ -2,39 +2,39 @@
 <Project>
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
-    <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
   </PropertyGroup>
   <!-- Global packages (private, build-time packages for all projects) -->
   <ItemGroup>
-    <GlobalPackageReference Include="Nerdbank.GitVersioning" Version="3.9.50" />
+    <GlobalPackageReference Include="Nerdbank.GitVersioning" Version="3.7.115" />
     <GlobalPackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
-    <GlobalPackageReference Include="Umbraco.Code" Version="2.4.0" />
+    <GlobalPackageReference Include="Umbraco.Code" Version="2.3.0" />
     <GlobalPackageReference Include="Umbraco.GitVersioning.Extensions" Version="0.2.0" />
   </ItemGroup>
   <!-- Microsoft packages -->
   <ItemGroup>
-    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.14.0" />
-    <PackageVersion Include="Microsoft.Data.Sqlite" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.EntityFrameworkCore.SqlServer" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Caching.Abstractions" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Caching.Memory" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Configuration.Abstractions" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Configuration.Json" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.FileProviders.Embedded" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.FileProviders.Physical" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Hosting.Abstractions" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Http" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Identity.Core" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Identity.Stores" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Logging" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Options" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Options.DataAnnotations" Version="10.0.1" />
-    <PackageVersion Include="Microsoft.Extensions.Caching.Hybrid" Version="10.1.0" />
-    <PackageVersion Include="System.Linq.Async" Version="7.0.0" />
+    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.13.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.13.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.13.0" />
+    <PackageVersion Include="Microsoft.Data.Sqlite" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.SqlServer" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Caching.Abstractions" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Caching.Memory" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Configuration.Abstractions" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Configuration.Json" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.FileProviders.Embedded" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.FileProviders.Physical" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Hosting.Abstractions" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Http" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Identity.Core" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Identity.Stores" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Logging" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Options" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Options.DataAnnotations" Version="9.0.4" />
+    <PackageVersion Include="Microsoft.Extensions.Caching.Hybrid" Version="9.4.0" />
   </ItemGroup>
   <!-- Umbraco packages -->
   <ItemGroup>
@@ -47,22 +47,21 @@
     <PackageVersion Include="Dazinator.Extensions.FileProviders" Version="2.0.0" />
     <PackageVersion Include="Examine" Version="3.7.1" />
     <PackageVersion Include="Examine.Core" Version="3.7.1" />
-    <PackageVersion Include="HtmlAgilityPack" Version="1.12.4" />
+    <PackageVersion Include="HtmlAgilityPack" Version="1.12.1" />
     <PackageVersion Include="JsonPatch.Net" Version="3.3.0" />
     <PackageVersion Include="K4os.Compression.LZ4" Version="1.3.8" />
-    <PackageVersion Include="MailKit" Version="4.14.1" />
-    <PackageVersion Include="Markdig" Version="0.44.0" />
+    <PackageVersion Include="MailKit" Version="4.11.0" />
     <PackageVersion Include="Markdown" Version="2.2.1" />
-    <PackageVersion Include="MessagePack" Version="3.1.4" />
+    <PackageVersion Include="MessagePack" Version="3.1.3" />
     <PackageVersion Include="MiniProfiler.AspNetCore.Mvc" Version="4.5.4" />
     <PackageVersion Include="MiniProfiler.Shared" Version="4.5.4" />
-    <PackageVersion Include="ncrontab" Version="3.4.0" />
-    <PackageVersion Include="NPoco" Version="6.1.0" />
-    <PackageVersion Include="NPoco.SqlServer" Version="6.1.0" />
-    <PackageVersion Include="OpenIddict.Abstractions" Version="7.2.0" />
-    <PackageVersion Include="OpenIddict.AspNetCore" Version="7.2.0" />
-    <PackageVersion Include="OpenIddict.EntityFrameworkCore" Version="7.2.0" />
-    <PackageVersion Include="Serilog" Version="4.3.0" />
+    <PackageVersion Include="ncrontab" Version="3.3.3" />
+    <PackageVersion Include="NPoco" Version="5.7.1" />
+    <PackageVersion Include="NPoco.SqlServer" Version="5.7.1" />
+    <PackageVersion Include="OpenIddict.Abstractions" Version="6.2.1" />
+    <PackageVersion Include="OpenIddict.AspNetCore" Version="6.2.1" />
+    <PackageVersion Include="OpenIddict.EntityFrameworkCore" Version="6.2.1" />
+    <PackageVersion Include="Serilog" Version="4.2.0" />
     <PackageVersion Include="Serilog.AspNetCore" Version="9.0.0" />
     <PackageVersion Include="Serilog.Enrichers.Process" Version="3.0.0" />
     <PackageVersion Include="Serilog.Enrichers.Thread" Version="4.0.0" />
@@ -72,20 +71,33 @@
     <PackageVersion Include="Serilog.Formatting.Compact.Reader" Version="4.0.0" />
     <PackageVersion Include="Serilog.Settings.Configuration" Version="9.0.0" />
     <PackageVersion Include="Serilog.Sinks.Async" Version="2.1.0" />
-    <PackageVersion Include="Serilog.Sinks.File" Version="7.0.0" />
+    <PackageVersion Include="Serilog.Sinks.File" Version="6.0.0" />
     <PackageVersion Include="Serilog.Sinks.Map" Version="2.0.0" />
-    <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.12" />
-    <PackageVersion Include="SixLabors.ImageSharp.Web" Version="3.2.0" />
-    <PackageVersion Include="Swashbuckle.AspNetCore" Version="10.0.1" />
+    <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.11" />
+    <PackageVersion Include="SixLabors.ImageSharp.Web" Version="3.1.5" />
+    <PackageVersion Include="Swashbuckle.AspNetCore" Version="8.1.1" />
   </ItemGroup>
   <!-- Transitive pinned versions (only required because our direct dependencies have vulnerable versions of transitive dependencies) -->
   <ItemGroup>
-    <!-- Dazinator.Extensions.FileProviders references vulnerable versions of the following: -->
-    <!-- TODO (V18): Remove these pinned dependencies when the Dazinator.Extensions.FileProviders dependency is removed. -->
+    <!-- Microsoft.EntityFrameworkCore.SqlServer and NPoco.SqlServer brings in a vulnerable version of Azure.Identity -->
+    <!-- Take top-level depedendency on Azure.Identity, because Microsoft.EntityFrameworkCore.SqlServer depends on a vulnerable version -->
+    <PackageVersion Include="Azure.Identity" Version="1.13.2" />
+    <!-- Microsoft.EntityFrameworkCore.SqlServer brings in a vulnerable version of System.Runtime.Caching -->
+    <PackageVersion Include="System.Runtime.Caching" Version="9.0.4" />
+    <!-- Dazinator.Extensions.FileProviders brings in a vulnerable version of System.Net.Http -->
     <PackageVersion Include="System.Net.Http" Version="4.3.4" />
-    <PackageVersion Include="System.Private.Uri" Version="4.3.2" />
-    <!-- Markdown references vulnerable version of the following: -->
-    <!-- TODO (V19): Remove these pinned dependencies when the Markdown dependency is removed. -->
+    <!-- Examine brings in a vulnerable version of System.Security.Cryptography.Xml -->
+    <PackageVersion Include="System.Security.Cryptography.Xml" Version="9.0.4" />
+    <!-- Dazinator.Extensions.FileProviders and MiniProfiler.AspNetCore.Mvc brings in a vulnerable version of System.Text.RegularExpressions -->
     <PackageVersion Include="System.Text.RegularExpressions" Version="4.3.1" />
+    <!-- OpenIddict.AspNetCore, Npoco.SqlServer and Microsoft.EntityFrameworkCore.SqlServer brings in a vulnerable version of Microsoft.IdentityModel.JsonWebTokens -->
+    <!-- Take top-level depedendency on Microsoft.IdentityModel.JsonWebTokens, because OpenIddict.AspNetCore, Npoco.SqlServer and Microsoft.EntityFrameworkCore.SqlServer depends on a vulnerable version -->
+    <PackageVersion Include="Microsoft.IdentityModel.JsonWebTokens" Version="8.8.0" />
+    <!-- Azure.Identity, Microsoft.EntityFrameworkCore.SqlServer and Dazinator.Extensions.FileProviders brings in a legacy version of System.Text.Encodings.Web -->
+    <PackageVersion Include="System.Text.Encodings.Web" Version="9.0.4" />
+    <!-- NPoco.SqlServer brings in a vulnerable version of Microsoft.Data.SqlClient  -->
+    <PackageVersion Include="Microsoft.Data.SqlClient" Version="6.0.1" />
+    <!-- Examine.Lucene brings in a vulnerable version of Lucene.Net.Replicator -->
+    <PackageVersion Include="Lucene.Net.Replicator" Version="4.8.0-beta00017" />
   </ItemGroup>
 </Project>

NOTICES.txt

@@ -196,14 +196,6 @@ Copyright: 2013-2024 .NET Foundation and Contributors
 
 ---
 
-Markdig: A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET
-
-URL: https://github.com/xoofx/markdig
-License: BSD-2-Clause license
-Copyright: 2018+, Alexandre Mutel. All rights reserved.
-
----
-
 Markdown: A library for parsing and compiling Markdown
 
 URL: https://github.com/hey-red/Markdown

build/azure-pipelines.yml

@@ -215,7 +215,7 @@ stages:
             inputs:
               targetType: inline
               script: |
-                dotnet tool install -g docfx
+                choco install docfx --version=2.59.4 -y
                 if ($lastexitcode -ne 0){
                     throw ("Error installing DocFX")
                 }
@@ -365,8 +365,8 @@ stages:
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure.Service)"
             LinuxPart3Of3:
               vmImage: "ubuntu-latest"
-              # Filter tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace. So this will run all tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace
-              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure) & (FullyQualifiedName!~ManagementApi)"
+              # Filter tests that are not part of the Umbraco.Infrastructure namespace. So this will run all tests that are not part of the Umbraco.Infrastructure namespace
+              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure)"
             macOSPart1Of3:
               vmImage: "macOS-latest"
               # Filter tests that are part of the Umbraco.Infrastructure namespace but not part of the Umbraco.Infrastructure.Service namespace
@@ -377,8 +377,8 @@ stages:
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure.Service)"
             macOSPart3Of3:
               vmImage: "macOS-latest"
-              # Filter tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace. So this will run all tests that are not part of the Umbraco.Infrastructure and the ManagementApi namespace
-              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure) & (FullyQualifiedName!~ManagementApi)"
+              # Filter tests that are not part of the Umbraco.Infrastructure namespace.
+              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure)"
         pool:
           vmImage: $(vmImage)
         variables:
@@ -441,8 +441,8 @@ stages:
               vmImage: "windows-latest"
               Tests__Database__DatabaseType: LocalDb
               Tests__Database__SQLServerMasterConnectionString: N/A
-              # Filter tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace. So this will run all tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace
-              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure) & (FullyQualifiedName!~ManagementApi)"
+              # Filter tests that are not part of the Umbraco.Infrastructure namespace. So this will run all tests that are not part of the Umbraco.Infrastructure namespace
+              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure)"
             LinuxPart1Of3:
               vmImage: "ubuntu-latest"
               SA_PASSWORD: UmbracoIntegration123!
@@ -462,8 +462,8 @@ stages:
               SA_PASSWORD: UmbracoIntegration123!
               Tests__Database__DatabaseType: SqlServer
               Tests__Database__SQLServerMasterConnectionString: "Server=(local);User Id=sa;Password=$(SA_PASSWORD);TrustServerCertificate=True"
-              # Filter tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace. So this will run all tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace
-              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure) & (FullyQualifiedName!~ManagementApi)"
+              # Filter tests that are not part of the Umbraco.Infrastructure namespace. So this will run all tests that are not part of the Umbraco.Infrastructure namespace
+              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure)"
         pool:
           vmImage: $(vmImage)
         steps:

build/nightly-E2E-test-pipelines.yml

@@ -4,13 +4,11 @@ pr: none
 trigger: none
 
 schedules:
-  - cron: '0 0 * * *'
-    displayName: Daily midnight build
+  - cron: '0 6 * * *'
+    displayName: Daily 6 AM build (v16/dev)
     branches:
       include:
-        - v15/dev
         - v16/dev
-        - main
 
 parameters:
   - name: skipIntegrationTests
@@ -18,8 +16,8 @@ parameters:
     type: boolean
     default: false
 
-  - name: skipDifferentAppSettingsAcceptanceTests
-    displayName: Skip acceptance tests with different app settings
+  - name: differentAppSettingsAcceptanceTests
+    displayName: Run acceptance tests with different app settings
     type: boolean
     default: false
 
@@ -28,12 +26,6 @@ parameters:
     type: boolean
     default: false
 
-  # Can we slow our tests down when running on SQLite? That way we might be able to avoid DB locks
-  - name: skipSqliteAcceptanceTests
-    displayName: Skip SQLite acceptance tests
-    type: boolean
-    default: true
-
 variables:
   nodeVersion: 20
   solution: umbraco.sln
@@ -129,39 +121,31 @@ stages:
           matrix:
             #            Windows:
             #              vmImage: 'windows-latest'
-            # We split the tests into 4 parts for each OS to reduce the time it takes to run them on the pipeline
-            LinuxPart1Of4:
+            # We split the tests into 3 parts for each OS to reduce the time it takes to run them on the pipeline
+            LinuxPart1Of3:
               vmImage: "ubuntu-latest"
               # Filter tests that are part of the Umbraco.Infrastructure namespace but not part of the Umbraco.Infrastructure.Service namespace
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure) & (FullyQualifiedName!~Umbraco.Infrastructure.Service)"
-            LinuxPart2Of4:
+            LinuxPart2Of3:
               vmImage: "ubuntu-latest"
               # Filter tests that are part of the Umbraco.Infrastructure.Service namespace
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure.Service)"
-            LinuxPart3Of4:
+            LinuxPart3Of3:
               vmImage: "ubuntu-latest"
-              # Filter tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace. So this will run all tests that are not part of the Umbraco.Infrastructure namespace
-              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure) & (FullyQualifiedName!~ManagementApi)"
-            LinuxPart4Of4:
-              vmImage: "ubuntu-latest"
-              # Filter tests that are part of the ManagementApi namespace
-              testFilter: "(FullyQualifiedName~ManagementApi)"
-            macOSPart1Of4:
+              # Filter tests that are not part of the Umbraco.Infrastructure namespace. So this will run all tests that are not part of the Umbraco.Infrastructure namespace
+              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure)"
+            macOSPart1Of3:
               vmImage: "macOS-latest"
               # Filter tests that are part of the Umbraco.Infrastructure namespace but not part of the Umbraco.Infrastructure.Service namespace
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure) & (FullyQualifiedName!~Umbraco.Infrastructure.Service)"
-            macOSPart2Of4:
+            macOSPart2Of3:
               vmImage: "macOS-latest"
               # Filter tests that are part of the Umbraco.Infrastructure.Service namespace
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure.Service)"
-            macOSPart3Of4:
+            macOSPart3Of3:
               vmImage: "macOS-latest"
-              # Filter tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace.
-              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure) & (FullyQualifiedName!~ManagementApi)"
-            macOSPart4Of4:
-              vmImage: "macOS-latest"
-              # Filter tests that are part of the ManagementApi namespace.
-              testFilter: "(FullyQualifiedName~ManagementApi)"
+              # Filter tests that are not part of the Umbraco.Infrastructure namespace.
+              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure)"
         pool:
           vmImage: $(vmImage)
         variables:
@@ -201,55 +185,43 @@ stages:
           SA_PASSWORD: UmbracoAcceptance123!
         strategy:
           matrix:
-            # We split the tests into 4 parts for each OS to reduce the time it takes to run them on the pipeline
-            WindowsPart1Of4:
+            # We split the tests into 3 parts for each OS to reduce the time it takes to run them on the pipeline
+            WindowsPart1Of3:
               vmImage: "windows-latest"
               Tests__Database__DatabaseType: LocalDb
               Tests__Database__SQLServerMasterConnectionString: N/A
               # Filter tests that are part of the Umbraco.Infrastructure namespace but not part of the Umbraco.Infrastructure.Service namespace
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure) & (FullyQualifiedName!~Umbraco.Infrastructure.Service)"
-            WindowsPart2Of4:
+            WindowsPart2Of3:
               vmImage: "windows-latest"
               Tests__Database__DatabaseType: LocalDb
               Tests__Database__SQLServerMasterConnectionString: N/A
               # Filter tests that are part of the Umbraco.Infrastructure.Service namespace
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure.Service)"
-            WindowsPart3Of4:
+            WindowsPart3Of3:
               vmImage: "windows-latest"
               Tests__Database__DatabaseType: LocalDb
               Tests__Database__SQLServerMasterConnectionString: N/A
-              # Filter tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace.
-              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure) & (FullyQualifiedName!~ManagementApi)"
-            WindowsPart4Of4:
-              vmImage: "windows-latest"
-              Tests__Database__DatabaseType: LocalDb
-              Tests__Database__SQLServerMasterConnectionString: N/A
-              # Filter tests that are part of the ManagementApi namespace.
-              testFilter: "(FullyQualifiedName~ManagementApi)"
-            LinuxPart1Of4:
+              # Filter tests that are not part of the Umbraco.Infrastructure namespace. So this will run all tests that are not part of the Umbraco.Infrastructure namespace
+              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure)"
+            LinuxPart1Of3:
               vmImage: "ubuntu-latest"
               Tests__Database__DatabaseType: SqlServer
               Tests__Database__SQLServerMasterConnectionString: "Server=(local);User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True"
               # Filter tests that are part of the Umbraco.Infrastructure namespace but not part of the Umbraco.Infrastructure.Service namespace
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure) & (FullyQualifiedName!~Umbraco.Infrastructure.Service)"
-            LinuxPart2Of4:
+            LinuxPart2Of3:
               vmImage: "ubuntu-latest"
               Tests__Database__DatabaseType: SqlServer
               Tests__Database__SQLServerMasterConnectionString: "Server=(local);User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True"
               # Filter tests that are part of the Umbraco.Infrastructure.Service namespace
               testFilter: "(FullyQualifiedName~Umbraco.Infrastructure.Service)"
-            LinuxPart3Of4:
+            LinuxPart3Of3:
               vmImage: "ubuntu-latest"
               Tests__Database__DatabaseType: SqlServer
               Tests__Database__SQLServerMasterConnectionString: "Server=(local);User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True"
-              # Filter tests that are not part of the Umbraco.Infrastructure and ManagementApi namespace.
-              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure) & (FullyQualifiedName!~ManagementApi)"
-            LinuxPart4Of4:
-              vmImage: "ubuntu-latest"
-              Tests__Database__DatabaseType: SqlServer
-              Tests__Database__SQLServerMasterConnectionString: "Server=(local);User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True"
-              # Filter tests that are part of the ManagementApi namespace.
-              testFilter: "(FullyQualifiedName~ManagementApi)"
+              # Filter tests that are not part of the Umbraco.Infrastructure namespace. So this will run all tests that are not part of the Umbraco.Infrastructure namespace
+              testFilter: "(FullyQualifiedName!~Umbraco.Infrastructure)"
         pool:
           vmImage: $(vmImage)
         steps:
@@ -321,7 +293,8 @@ stages:
 
   - stage: DefaultConfigE2E
     displayName: Default Config E2E Tests
-    dependsOn: Build
+    dependsOn: Integration
+    condition: always()
     variables:
       npm_config_cache: $(Pipeline.Workspace)/.npm_e2e
       # Enable console logging in Release mode
@@ -348,7 +321,7 @@ stages:
       - job:
         displayName: E2E Tests (SQLite)
         timeoutInMinutes: 180
-        condition: ${{ and(eq(parameters.skipDefaultConfigAcceptanceTests, false), eq(parameters.skipSqliteAcceptanceTests, false)) }}
+        condition: ${{ eq(parameters.skipDefaultConfigAcceptanceTests, false) }}
         variables:
           # Connection string
           CONNECTIONSTRINGS__UMBRACODBDSN: Data Source=Umbraco;Mode=Memory;Cache=Shared;Foreign Keys=True;Pooling=True
@@ -449,15 +422,15 @@ stages:
               vmImage: "ubuntu-latest"
               CONNECTIONSTRINGS__UMBRACODBDSN: "Server=(local);Database=Umbraco;User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True"
             WindowsPart1Of3:
-              testCommand: "npm run testWindows -- --shard=1/3"
+              testCommand: "npm run test -- --shard=1/3"
               testFolder: "DefaultConfig"
               vmImage: "windows-latest"
             WindowsPart2Of3:
-              testCommand: "npm run testWindows -- --shard=2/3"
+              testCommand: "npm run test -- --shard=2/3"
               testFolder: "DefaultConfig"
               vmImage: "windows-latest"
             WindowsPart3Of3:
-              testCommand: "npm run testWindows -- --shard=3/3"
+              testCommand: "npm run test -- --shard=3/3"
               testFolder: "DefaultConfig"
               vmImage: "windows-latest"
         pool:
@@ -502,7 +475,8 @@ stages:
 
   - stage: AdditionalConfigE2E
     displayName: Additional Config E2E Tests
-    dependsOn: Build
+    dependsOn: DefaultConfigE2E
+    condition: always()
     variables:
       npm_config_cache: $(Pipeline.Workspace)/.npm_e2e
       ASPNETCORE_URLS: https://localhost:44331
@@ -511,7 +485,7 @@ stages:
     jobs:
       - job:
         displayName: E2E Tests with Different App settings (SQL Server)
-        condition: ${{ eq(parameters.skipDifferentAppSettingsAcceptanceTests, false) }}
+        condition: ${{ or(eq(parameters.differentAppSettingsAcceptanceTests, true), eq(parameters.skipDefaultConfigAcceptanceTests, true)) }}
         timeoutInMinutes: 180
         variables:
           SA_PASSWORD: UmbracoAcceptance123!
@@ -570,49 +544,6 @@ stages:
               CONNECTIONSTRINGS__UMBRACODBDSN: Server=(local);Database=Umbraco;User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True
               CONNECTIONSTRINGS__UMBRACODBDSN_PROVIDERNAME: Microsoft.Data.SqlClient
               additionalEnvironmentVariables: false
-            # EntityDataPicker
-            WindowsEntityDataPicker:
-              vmImage: "windows-latest"
-              testFolder: "EntityDataPicker"
-              port: ''
-              testCommand: "npx playwright test --project=entityDataPicker"
-              CONNECTIONSTRINGS__UMBRACODBDSN: Data Source=(localdb)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\Umbraco.mdf;Integrated Security=True
-              CONNECTIONSTRINGS__UMBRACODBDSN_PROVIDERNAME: Microsoft.Data.SqlClient
-              additionalEnvironmentVariables: false
-            LinuxEntityDataPicker:
-              vmImage: "ubuntu-latest"
-              testFolder: "EntityDataPicker"
-              port: ''
-              testCommand: "npx playwright test --project=entityDataPicker"
-              CONNECTIONSTRINGS__UMBRACODBDSN: Server=(local);Database=Umbraco;User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True
-              CONNECTIONSTRINGS__UMBRACODBDSN_PROVIDERNAME: Microsoft.Data.SqlClient
-              additionalEnvironmentVariables: false
-            # ContentSettingConfig
-            WindowsContentSettingsConfig:
-              vmImage: "windows-latest"
-              testFolder: "ContentSettingConfig"
-              port: ''
-              testCommand: "npx playwright test --project=contentSettingConfig"
-              CONNECTIONSTRINGS__UMBRACODBDSN: Data Source=(localdb)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\Umbraco.mdf;Integrated Security=True
-              CONNECTIONSTRINGS__UMBRACODBDSN_PROVIDERNAME: Microsoft.Data.SqlClient
-              additionalEnvironmentVariables: false
-            LinuxContentSettingsConfig:
-              vmImage: "ubuntu-latest"
-              testFolder: "ContentSettingConfig"
-              port: ''
-              testCommand: "npx playwright test --project=contentSettingConfig"
-              CONNECTIONSTRINGS__UMBRACODBDSN: Server=(local);Database=Umbraco;User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True
-              CONNECTIONSTRINGS__UMBRACODBDSN_PROVIDERNAME: Microsoft.Data.SqlClient
-              additionalEnvironmentVariables: false
-            # SMTP
-            LinuxSMTP:
-              vmImage: "ubuntu-latest"
-              testFolder: "SMTP"
-              port: ''
-              testCommand: "npx playwright test --project=smtp"
-              CONNECTIONSTRINGS__UMBRACODBDSN: Server=(local);Database=Umbraco;User Id=sa;Password=$(SA_PASSWORD);Encrypt=True;TrustServerCertificate=True
-              CONNECTIONSTRINGS__UMBRACODBDSN_PROVIDERNAME: Microsoft.Data.SqlClient
-              additionalEnvironmentVariables: false
         pool:
           vmImage: $(vmImage)
         steps:
@@ -690,23 +621,6 @@ stages:
               AZUREADB2CCLIENTID: $(AZUREB2CCLIENTID)
               AZUREADB2CCLIENTSECRET: $(AZUREB2CCLIENTSECRET)
 
-          # Start SMTP4dev via Docker for SMTP tests
-          - bash: |
-              echo "Starting SMTP4dev container..."
-              docker run -d --name smtp4dev -p 5000:80 -p 25:25 rnwood/smtp4dev
-
-              echo "Waiting for SMTP4dev to be ready..."
-              for i in {1..30}; do
-                if curl -s http://localhost:5000/api/messages > /dev/null; then
-                  echo "SMTP4dev is ready"
-                  break
-                fi
-                echo "Attempt $i: Waiting for SMTP4dev..."
-                sleep 2
-              done
-            displayName: Start SMTP4dev Docker container (Linux)
-            condition: and(succeeded(), eq(variables['Agent.OS'], 'Linux'), contains(variables['testFolder'], 'SMTP'))
-
           # Run tests Template
           - template: nightly-E2E-run-tests-template.yml
             parameters:
@@ -717,14 +631,6 @@ stages:
               AZUREB2CTESTUSERPASSWORD: $(AZUREB2CTESTUSERPASSWORD)
               DatabaseType: ${{ variables.DatabaseType }}
 
-          # Stop SMTP4dev container
-          - bash: |
-              echo "Stopping SMTP4dev container..."
-              docker stop smtp4dev
-              docker rm smtp4dev
-            displayName: Stop SMTP4dev Docker container
-            condition: and(succeeded(), eq(variables['Agent.OS'], 'Linux'), contains(variables['testFolder'], 'SMTP'))
-
   - stage: NotifySlackBot
     displayName: Notify Slack on Failure
     dependsOn: DefaultConfigE2E

build/nightly-build-trigger.yml

@@ -9,7 +9,7 @@ schedules:
   branches:
     include:
     - v13/dev
-    - v16/dev
+    - v17/dev
     - main
 
 steps:

build/templates/dependency-track.yml

@@ -13,12 +13,12 @@ jobs:
     - checkout: none
 
     - bash: |
-        project_id=$(curl --no-progress-meter -H "X-Api-Key: $(DT_API_KEY)" "$(DT_API_URI)/api/v1/project/lookup?name=${{ parameters.projectName }}&version=${{ parameters.umbracoVersion }}" | jq -r '.uuid')
+        project_id=$(curl --no-progress-meter -H "X-Api-Key: $(DT_API_KEY)" "$(DT_API_URL)/v1/project/lookup?name=${{ parameters.projectName }}&version=${{ parameters.umbracoVersion }}" | jq -r '.uuid')
         if [ "$project_id" != "null" ] && [ -n "$project_id" ]; then
           echo "Project '${{ parameters.projectName }}' with version '${{ parameters.umbracoVersion }}' already exists (ID: $project_id)."
         else
           project_id=$(curl --no-progress-meter \
-            -X PUT "$(DT_API_URI)/api/v1/project" \
+            -X PUT "$(DT_API_URL)/v1/project" \
             -H "X-Api-Key: $(DT_API_KEY)" \
             -H "Content-Type: application/json" \
             -d '{"name": "${{ parameters.projectName }}", "version": "${{ parameters.umbracoVersion }}", "collectionLogic": "AGGREGATE_DIRECT_CHILDREN"}' \
@@ -42,14 +42,15 @@ jobs:
         artifact: ${{ project.artifact }}
         displayName: Download ${{ project.artifact }} artifact
 
-      - task: upload-bom-dtrack@1
-        inputs:
-          dtrackURI: $(DT_API_URI)
-          dtrackAPIKey: $(DT_API_KEY)
-          dtrackProjAutoCreate: true
-          dtrackProjName: '${{ parameters.projectName }}-${{ project.name }}'
-          dtrackProjVersion: ${{ parameters.umbracoVersion }}
-          dtrackParentProjName: ${{ parameters.projectName }}
-          dtrackParentProjVersion: ${{ parameters.umbracoVersion }}
-          bomFilePath: '$(Pipeline.Workspace)/${{ project.artifact }}/${{ project.bomFilePath }}'
+      - script: |
+          curl --no-progress-meter --fail-with-body \
+            -X POST "$(DT_API_URL)/v1/bom" \
+            -H "X-Api-Key: $(DT_API_KEY)" \
+            -H "Content-Type: multipart/form-data" \
+            -F "autoCreate=true" \
+            -F "projectName=${{ parameters.projectName }}-${{ project.name }}" \
+            -F "projectVersion=${{ parameters.umbracoVersion }}" \
+            -F "parentName=${{ parameters.projectName }}" \
+            -F "parentVersion=${{ parameters.umbracoVersion }}" \
+            -F "bom=@$(Pipeline.Workspace)/${{ project.artifact }}/${{ project.bomFilePath }}"
         displayName: Upload ${{ project.name }} BOM to Dependency Track

context7.json

@@ -1,4 +0,0 @@
-{
-  "url": "https://context7.com/umbraco/umbraco-cms",
-  "public_key": "pk_GTIgsrGAQiHNxCirZBDIM"
-}

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "10.0.100",
+    "version": "9.0.306",
     "rollForward": "latestFeature",
     "allowPrerelease": false
   }

src/Umbraco.Cms.Api.Common/CLAUDE.md

@@ -1,371 +0,0 @@
-# Umbraco.Cms.Api.Common
-
-Shared infrastructure for Umbraco CMS REST APIs (Management and Delivery).
-
----
-
-## 1. Architecture
-
-**Type**: Class Library (NuGet Package)
-**Target Framework**: .NET 10.0
-**Purpose**: Common API infrastructure - OpenAPI/Swagger, JSON serialization, OpenIddict authentication, problem details
-
-### Key Technologies
-
-- **ASP.NET Core** - Web framework
-- **Swashbuckle** - OpenAPI/Swagger documentation generation
-- **OpenIddict** - OAuth 2.0/OpenID Connect authentication
-- **Asp.Versioning** - API versioning
-- **System.Text.Json** - Polymorphic JSON serialization
-
-### Dependencies
-
-- `Umbraco.Core` - Domain models and service contracts
-- `Umbraco.Web.Common` - Web functionality
-
-### Project Structure (46 files)
-
-```
-Umbraco.Cms.Api.Common/
-├── OpenApi/                    # Schema/Operation ID handlers for Swagger
-│   ├── SchemaIdHandler.cs     # Generates schema IDs (e.g., "PagedUserModel")
-│   ├── OperationIdHandler.cs  # Generates operation IDs
-│   └── SubTypesHandler.cs     # Polymorphism support
-├── Serialization/              # JSON type resolution
-│   └── UmbracoJsonTypeInfoResolver.cs
-├── Configuration/              # Options configuration
-│   ├── ConfigureUmbracoSwaggerGenOptions.cs
-│   └── ConfigureOpenIddict.cs
-├── DependencyInjection/        # Service registration
-│   ├── UmbracoBuilderApiExtensions.cs
-│   └── UmbracoBuilderAuthExtensions.cs
-├── Builders/                   # RFC 7807 problem details
-│   └── ProblemDetailsBuilder.cs
-├── ViewModels/Pagination/      # Common DTOs
-└── Security/                   # Auth paths and handlers
-```
-
-### Design Patterns
-
-1. **Strategy Pattern** - `ISchemaIdHandler`, `IOperationIdHandler` (extensible via inheritance)
-2. **Builder Pattern** - `ProblemDetailsBuilder` for fluent error responses
-3. **Options Pattern** - All configuration via `IConfigureOptions<T>`
-
----
-
-## 2. Commands
-
-See "Quick Reference" section at bottom for common commands.
-
----
-
-## 3. Key Patterns
-
-### Virtual Handlers for Extensibility
-
-Handlers are intentionally virtual to allow consuming APIs to override:
-
-```csharp
-// NOTE: Left unsealed on purpose, so it is extendable.
-public class SchemaIdHandler : ISchemaIdHandler
-{
-    public virtual bool CanHandle(Type type) { }
-    public virtual string Handle(Type type) { }
-}
-```
-
-**Why**: Management and Delivery APIs can customize schema/operation ID generation.
-
-### Schema ID Sanitization (OpenApi/SchemaIdHandler.cs:24-29, 32)
-
-```csharp
-// Add "Model" suffix to avoid TypeScript name clashes (lines 24-29)
-if (name.EndsWith("Model") == false)
-{
-    // because some models names clash with common classes in TypeScript (i.e. Document),
-    // we need to add a "Model" postfix to all models
-    name = $"{name}Model";
-}
-
-// Remove invalid characters to prevent OpenAPI generation errors (line 32)
-return Regex.Replace(name, @"[^\w]", string.Empty);
-```
-
-### Polymorphic Deserialization (Serialization/UmbracoJsonTypeInfoResolver.cs:29-35)
-
-```csharp
-// IMPORTANT: do NOT return an empty enumerable here. it will cause nullability to fail on reference
-// properties, because "$ref" does not mix and match well with "nullable" in OpenAPI.
-if (type.IsInterface is false)
-{
-    return new[] { type };
-}
-```
-
-**Why**: Interfaces must return concrete types to avoid OpenAPI schema conflicts.
-
----
-
-## 4. Testing
-
-**Location**: No direct tests - tested via integration tests in consuming APIs
-
-**How to test changes**:
-```bash
-# Run integration tests that exercise this library
-dotnet test tests/Umbraco.Tests.Integration/
-
-# Verify OpenAPI generation
-# 1. Run Management API
-# 2. Navigate to /umbraco/swagger/
-# 3. Check schema IDs and operation IDs
-```
-
-**Focus areas when testing**:
-- OpenAPI document generation (schema IDs, operation IDs)
-- Polymorphic JSON serialization/deserialization
-- OpenIddict authentication flow
-- Problem details formatting
-
----
-
-## 5. OpenIddict Authentication
-
-### Key Configuration (DependencyInjection/UmbracoBuilderAuthExtensions.cs)
-
-**Reference Tokens over JWT** (line 76-80):
-```csharp
-// Enable reference tokens
-// - see https://documentation.openiddict.com/configuration/token-storage.html
-options
-    .UseReferenceAccessTokens()
-    .UseReferenceRefreshTokens();
-```
-
-**Why**: More secure (revocable), better for load balancing, uses ASP.NET Core Data Protection.
-
-**Token Lifetime** (line 88-91):
-```csharp
-// Make the access token lifetime 25% of the refresh token lifetime
-options.SetAccessTokenLifetime(new TimeSpan(timeOut.Ticks / 4));
-options.SetRefreshTokenLifetime(timeOut);
-```
-
-**PKCE Required** (line 59-63):
-```csharp
-// Enable authorization code flow with PKCE
-options
-    .AllowAuthorizationCodeFlow()
-    .RequireProofKeyForCodeExchange()
-    .AllowRefreshTokenFlow();
-```
-
-**Endpoints**: Backoffice `/umbraco/management/api/v1/security/*`, Member `/umbraco/member/api/v1/security/*`
-
-### Secure Cookie-Based Token Storage (v17+)
-
-**Implementation** (DependencyInjection/HideBackOfficeTokensHandler.cs):
-
-Back-office tokens are hidden from client-side JavaScript via HTTP-only cookies:
-
-```csharp
-private const string AccessTokenCookieKey = "__Host-umbAccessToken";
-private const string RefreshTokenCookieKey = "__Host-umbRefreshToken";
-
-// Tokens are encrypted via Data Protection and stored in cookies
-SetCookie(httpContext, AccessTokenCookieKey, context.Response.AccessToken);
-context.Response.AccessToken = "[redacted]";  // Client sees redacted value
-```
-
-**Key Security Features** (lines 143-165): `HttpOnly`, `IsEssential`, `Path="/"`, `Secure` (HTTPS), `__Host-` prefix
-
-**Configuration**: `BackOfficeTokenCookieSettings.Enabled` (default: true in v17+)
-
-**Implications**: Client-side cannot access tokens; encrypted with Data Protection; load balancing needs shared key ring; API requests need `credentials: include`
-
----
-
-## 6. Common Issues & Edge Cases
-
-### Polymorphic Deserialization Requires `$type`
-
-**Issue**: Deserializing to an interface without `$type` discriminator fails.
-
-**Handled in** (Json/NamedSystemTextJsonInputFormatter.cs:24-29):
-```csharp
-catch (NotSupportedException exception)
-{
-    // This happens when trying to deserialize to an interface, without sending the $type as part of the request
-    context.ModelState.TryAddModelException(string.Empty, new InputFormatterException(exception.Message, exception));
-    return await InputFormatterResult.FailureAsync();
-}
-```
-
-**Solution**: Clients must include `$type` property for interface types, or use concrete types.
-
-### Schema ID Collisions with TypeScript
-
-**Issue**: Type names like `Document` clash with TypeScript built-ins.
-
-**Solution**: Add "Model" suffix (OpenApi/SchemaIdHandler.cs:24-29)
-
-### Generic Type Handling
-
-**Issue**: `PagedViewModel<T>` needs flattened schema name.
-
-**Solution** (OpenApi/SchemaIdHandler.cs:41-50):
-```csharp
-private string HandleGenerics(string name, Type type)
-{
-    if (!type.IsGenericType)
-        return name;
-
-    // use attribute custom name or append the generic type names
-    // turns "PagedViewModel<RelationItemViewModel>" into "PagedRelationItem"
-    return $"{name}{string.Join(string.Empty, type.GenericTypeArguments.Select(SanitizedTypeName))}";
-}
-```
-
----
-
-## 7. Extending This Library
-
-### Adding a Custom OpenAPI Handler
-
-1. **Implement interface**:
-   ```csharp
-   public class MySchemaIdHandler : SchemaIdHandler
-   {
-       public override bool CanHandle(Type type)
-           => type.Namespace?.StartsWith("MyProject") is true;
-
-       public override string Handle(Type type)
-           => $"My{base.Handle(type)}";
-   }
-   ```
-
-2. **Register in consuming API**:
-   ```csharp
-   builder.Services.AddSingleton<ISchemaIdHandler, MySchemaIdHandler>();
-   ```
-
-**Note**: Handlers registered later take precedence in the selector.
-
-### Customizing Problem Details
-
-```csharp
-var problemDetails = new ProblemDetailsBuilder()
-    .WithTitle("Validation Failed")
-    .WithDetail("The request contains errors")
-    .WithType("ValidationError")
-    .WithOperationStatus(MyOperationStatus.ValidationFailed)
-    .WithRequestModelErrors(errors)
-    .Build();
-
-return BadRequest(problemDetails);
-```
-
----
-
-## 8. Project-Specific Notes
-
-### Why Virtual Handlers?
-
-**Decision**: Make `SchemaIdHandler`, `OperationIdHandler`, etc. virtual.
-
-**Why**: Management API and Delivery API have different schema ID requirements. Virtual methods allow override without rewriting the entire handler.
-
-**Example**: Management API might prefix all schemas with "Management", Delivery API with "Delivery".
-
-### Performance: Subtype Caching
-
-**Why**: Cache discovered subtypes (UmbracoJsonTypeInfoResolver.cs:14) to avoid expensive reflection calls
-
-### Known Limitations
-
-1. **Polymorphic Deserialization**:
-   - Requires `$type` discriminator in JSON for interfaces
-   - Only discovers types in Umbraco namespaces
-   - Not all .NET types are discoverable
-
-2. **OpenAPI Schema Generation**:
-   - Generic types are flattened (e.g., `PagedViewModel<T>` → `PagedTModel`)
-   - Type names may need "Model" suffix to avoid clashes
-
-3. **OpenIddict Multi-Server**:
-   - Requires shared Data Protection key ring
-   - All servers must have synchronized clocks (NTP)
-   - Reference tokens require database storage
-
-### External Dependencies
-
-**OpenIddict**:
-- OAuth 2.0 / OpenID Connect provider
-- Version: See `Directory.Packages.props`
-- Uses ASP.NET Core Data Protection for token encryption
-
-**Swashbuckle**:
-- OpenAPI 3.0 document generation
-- Custom filters: `EnumSchemaFilter`, `MimeTypeDocumentFilter`, `RemoveSecuritySchemesDocumentFilter`
-
-**Asp.Versioning**:
-- API versioning via `ApiVersion` attribute
-- API explorer integration for multi-version Swagger docs
-
-### Configuration
-
-**HTTPS**: `DisableTransportSecurityRequirement` for local dev only (ConfigureOpenIddict.cs:14). **Warning**: Never disable in production.
-
-### Usage Pattern
-
-Consuming APIs call `builder.AddUmbracoApiOpenApiUI().AddUmbracoOpenIddict()`
-
----
-
-## Quick Reference
-
-### Essential Commands
-
-```bash
-# Build project
-dotnet build src/Umbraco.Cms.Api.Common/Umbraco.Cms.Api.Common.csproj
-
-# Pack for NuGet
-dotnet pack src/Umbraco.Cms.Api.Common/Umbraco.Cms.Api.Common.csproj -c Release
-
-# Test via integration tests
-dotnet test tests/Umbraco.Tests.Integration/
-
-# Check packages
-dotnet list src/Umbraco.Cms.Api.Common/Umbraco.Cms.Api.Common.csproj package --outdated
-dotnet list src/Umbraco.Cms.Api.Common/Umbraco.Cms.Api.Common.csproj package --vulnerable
-```
-
-### Key Classes
-
-| Class | Purpose | File |
-|-------|---------|------|
-| `ProblemDetailsBuilder` | Build RFC 7807 error responses | Builders/ProblemDetailsBuilder.cs |
-| `SchemaIdHandler` | Generate OpenAPI schema IDs | OpenApi/SchemaIdHandler.cs |
-| `UmbracoJsonTypeInfoResolver` | Polymorphic JSON serialization | Serialization/UmbracoJsonTypeInfoResolver.cs |
-| `UmbracoBuilderAuthExtensions` | Configure OpenIddict | DependencyInjection/UmbracoBuilderAuthExtensions.cs |
-| `HideBackOfficeTokensHandler` | Secure cookie-based token storage | DependencyInjection/HideBackOfficeTokensHandler.cs |
-| `PagedViewModel<T>` | Generic pagination model | ViewModels/Pagination/PagedViewModel.cs |
-
-### Important Files
-
-- `Umbraco.Cms.Api.Common.csproj` - Project dependencies
-- `DependencyInjection/UmbracoBuilderApiExtensions.cs` - OpenAPI registration (line 12-31)
-- `DependencyInjection/UmbracoBuilderAuthExtensions.cs` - OpenIddict setup (line 20-183)
-- `Security/Paths.cs` - API endpoint path constants
-
-### Getting Help
-
-- **Root documentation**: `/CLAUDE.md` - Repository overview
-- **Core patterns**: `/src/Umbraco.Core/CLAUDE.md` - Core contracts and patterns
-- **Official docs**: https://docs.umbraco.com/
-- **OpenIddict docs**: https://documentation.openiddict.com/
-
----
-
-**This library is the foundation for all Umbraco CMS REST APIs. Focus on OpenAPI customization, authentication configuration, and polymorphic serialization when working here.**

src/Umbraco.Cms.Api.Common/Configuration/ConfigureUmbracoSwaggerGenOptions.cs

@@ -1,10 +1,13 @@
+using Asp.Versioning;
+using Microsoft.AspNetCore.Mvc.Abstractions;
 using Microsoft.AspNetCore.Mvc.ApiExplorer;
+using Microsoft.AspNetCore.Mvc.Controllers;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using Umbraco.Cms.Api.Common.OpenApi;
-using Umbraco.Cms.Core.DependencyInjection;
+using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Api.Common.Configuration;
 
@@ -13,31 +16,15 @@ public class ConfigureUmbracoSwaggerGenOptions : IConfigureOptions<SwaggerGenOpt
     private readonly IOperationIdSelector _operationIdSelector;
     private readonly ISchemaIdSelector _schemaIdSelector;
     private readonly ISubTypesSelector _subTypesSelector;
-    private readonly IDocumentInclusionSelector _documentInclusionSelector;
 
-    public ConfigureUmbracoSwaggerGenOptions(
-        IOperationIdSelector operationIdSelector,
-        ISchemaIdSelector schemaIdSelector,
-        ISubTypesSelector subTypesSelector,
-        IDocumentInclusionSelector documentInclusionSelector)
-    {
-        _operationIdSelector = operationIdSelector;
-        _schemaIdSelector = schemaIdSelector;
-        _subTypesSelector = subTypesSelector;
-        _documentInclusionSelector = documentInclusionSelector;
-    }
-
-    [Obsolete("Please use the constructor with all parameters. Scheduled for removal in Umbraco 19.")]
     public ConfigureUmbracoSwaggerGenOptions(
         IOperationIdSelector operationIdSelector,
         ISchemaIdSelector schemaIdSelector,
         ISubTypesSelector subTypesSelector)
-        : this(
-              operationIdSelector,
-              schemaIdSelector,
-              subTypesSelector,
-              StaticServiceProvider.Instance.GetRequiredService<IDocumentInclusionSelector>())
     {
+        _operationIdSelector = operationIdSelector;
+        _schemaIdSelector = schemaIdSelector;
+        _subTypesSelector = subTypesSelector;
     }
 
     public void Configure(SwaggerGenOptions swaggerGenOptions)
@@ -52,11 +39,19 @@ public class ConfigureUmbracoSwaggerGenOptions : IConfigureOptions<SwaggerGenOpt
             });
 
         swaggerGenOptions.CustomOperationIds(description => _operationIdSelector.OperationId(description));
-        swaggerGenOptions.DocInclusionPredicate(_documentInclusionSelector.Include);
-        swaggerGenOptions.TagActionsBy(api =>
-            api.GroupName is null
-                ? []
-                : new[] { api.GroupName });
+        swaggerGenOptions.DocInclusionPredicate((name, api) =>
+        {
+            if (api.ActionDescriptor is ControllerActionDescriptor controllerActionDescriptor
+                && controllerActionDescriptor.HasMapToApiAttribute(name))
+            {
+                return true;
+            }
+
+            ApiVersionMetadata apiVersionMetadata = api.ActionDescriptor.GetApiVersionMetadata();
+            return apiVersionMetadata.Name == name
+                   || (string.IsNullOrEmpty(apiVersionMetadata.Name) && name == DefaultApiConfiguration.ApiName);
+        });
+        swaggerGenOptions.TagActionsBy(api => new[] { api.GroupName });
         swaggerGenOptions.OrderActionsBy(ActionOrderBy);
         swaggerGenOptions.SchemaFilter<EnumSchemaFilter>();
         swaggerGenOptions.CustomSchemaIds(_schemaIdSelector.SchemaId);

src/Umbraco.Cms.Api.Common/DependencyInjection/HideBackOfficeTokensHandler.cs

@@ -21,13 +21,9 @@ internal sealed class HideBackOfficeTokensHandler
         INotificationHandler<UserLogoutSuccessNotification>
 {
     private const string RedactedTokenValue = "[redacted]";
-
-    // The __Host- prefix enforces secure cookies at browser level (requires Secure, Path=/, no Domain).
-    // For local development over HTTP, we use a simpler prefix to avoid browser rejection.
-    private const string SecureCookiePrefix = "__Host-";
-    private const string AccessTokenCookieName = "umbAccessToken";
-    private const string RefreshTokenCookieName = "umbRefreshToken";
-    private const string PkceCodeCookieName = "umbPkceCode";
+    private const string AccessTokenCookieKey = "__Host-umbAccessToken";
+    private const string RefreshTokenCookieKey = "__Host-umbRefreshToken";
+    private const string PkceCodeCookieKey = "__Host-umbPkceCode";
 
     private readonly IHttpContextAccessor _httpContextAccessor;
     private readonly IDataProtectionProvider _dataProtectionProvider;
@@ -63,13 +59,13 @@ internal sealed class HideBackOfficeTokensHandler
 
         if (context.Response.AccessToken is not null)
         {
-            SetCookie(httpContext, AccessTokenCookieName, context.Response.AccessToken);
+            SetCookie(httpContext, AccessTokenCookieKey, context.Response.AccessToken);
             context.Response.AccessToken = RedactedTokenValue;
         }
 
         if (context.Response.RefreshToken is not null)
         {
-            SetCookie(httpContext, RefreshTokenCookieName, context.Response.RefreshToken);
+            SetCookie(httpContext, RefreshTokenCookieKey, context.Response.RefreshToken);
             context.Response.RefreshToken = RedactedTokenValue;
         }
 
@@ -91,7 +87,7 @@ internal sealed class HideBackOfficeTokensHandler
 
         if (context.Response.Code is not null)
         {
-            SetCookie(GetHttpContext(), PkceCodeCookieName, context.Response.Code);
+            SetCookie(GetHttpContext(), PkceCodeCookieKey, context.Response.Code);
             context.Response.Code = RedactedTokenValue;
         }
 
@@ -109,16 +105,14 @@ internal sealed class HideBackOfficeTokensHandler
             return ValueTask.CompletedTask;
         }
 
-        HttpContext httpContext = GetHttpContext();
-
         // Handle when the PKCE code is being exchanged for an access token.
         if (context.Request.Code == RedactedTokenValue
-            && TryGetCookie(httpContext, PkceCodeCookieName, out var code))
+            && TryGetCookie(PkceCodeCookieKey, out var code))
         {
             context.Request.Code = code;
 
             // We won't need the PKCE cookie after this, let's remove it.
-            RemoveCookie(httpContext, PkceCodeCookieName);
+            RemoveCookie(GetHttpContext(), PkceCodeCookieKey);
         }
         else
         {
@@ -129,7 +123,7 @@ internal sealed class HideBackOfficeTokensHandler
 
         // Handle when a refresh token is being exchanged for a new access token.
         if (context.Request.RefreshToken == RedactedTokenValue
-            && TryGetCookie(httpContext, RefreshTokenCookieName, out var refreshToken))
+            && TryGetCookie(RefreshTokenCookieKey, out var refreshToken))
         {
             context.Request.RefreshToken = refreshToken;
         }
@@ -155,7 +149,7 @@ internal sealed class HideBackOfficeTokensHandler
             return ValueTask.CompletedTask;
         }
 
-        if (TryGetCookie(GetHttpContext(), AccessTokenCookieName, out var accessToken))
+        if (TryGetCookie(AccessTokenCookieKey, out var accessToken))
         {
             context.AccessToken = accessToken;
         }
@@ -165,8 +159,8 @@ internal sealed class HideBackOfficeTokensHandler
 
     public void Handle(UserLogoutSuccessNotification notification)
     {
-        HttpContext? httpContext = _httpContextAccessor.HttpContext;
-        if (httpContext is null)
+        HttpContext? context = _httpContextAccessor.HttpContext;
+        if (context is null)
         {
             // For some reason there is no ambient HTTP context, so we can't clean up the cookies.
             // This is OK, because the tokens in the cookies have already been revoked at user sign-out,
@@ -174,32 +168,23 @@ internal sealed class HideBackOfficeTokensHandler
             return;
         }
 
-        RemoveCookie(httpContext, AccessTokenCookieName);
-        RemoveCookie(httpContext, RefreshTokenCookieName);
+        context.Response.Cookies.Delete(AccessTokenCookieKey);
+        context.Response.Cookies.Delete(RefreshTokenCookieKey);
     }
 
     private HttpContext GetHttpContext()
         => _httpContextAccessor.GetRequiredHttpContext();
 
-    private string GetCookieKey(HttpContext httpContext, string cookieName)
-        => _globalSettings.UseHttps || httpContext.Request.IsHttps
-            ? $"{SecureCookiePrefix}{cookieName}"
-            : cookieName;
-
-    private void SetCookie(HttpContext httpContext, string cookieName, string value)
+    private void SetCookie(HttpContext httpContext, string key, string value)
     {
-        var key = GetCookieKey(httpContext, cookieName);
         var cookieValue = EncryptionHelper.Encrypt(value, _dataProtectionProvider);
 
-        RemoveCookie(httpContext, cookieName);
+        RemoveCookie(httpContext, key);
         httpContext.Response.Cookies.Append(key, cookieValue, GetCookieOptions(httpContext));
     }
 
-    private void RemoveCookie(HttpContext httpContext, string cookieName)
-    {
-        var key = GetCookieKey(httpContext, cookieName);
-        httpContext.Response.Cookies.Delete(key, GetCookieOptions(httpContext));
-    }
+    private void RemoveCookie(HttpContext httpContext, string key)
+        => httpContext.Response.Cookies.Delete(key, GetCookieOptions(httpContext));
 
     private CookieOptions GetCookieOptions(HttpContext httpContext) =>
         new()
@@ -226,10 +211,9 @@ internal sealed class HideBackOfficeTokensHandler
             SameSite = ParseSameSiteMode(_backOfficeTokenCookieSettings.SameSite),
         };
 
-    private bool TryGetCookie(HttpContext httpContext, string cookieName, [NotNullWhen(true)] out string? value)
+    private bool TryGetCookie(string key, [NotNullWhen(true)] out string? value)
     {
-        var key = GetCookieKey(httpContext, cookieName);
-        if (httpContext.Request.Cookies.TryGetValue(key, out var cookieValue))
+        if (GetHttpContext().Request.Cookies.TryGetValue(key, out var cookieValue))
         {
             value = EncryptionHelper.Decrypt(cookieValue, _dataProtectionProvider);
             return true;

src/Umbraco.Cms.Api.Common/DependencyInjection/UmbracoBuilderApiExtensions.cs

@@ -25,7 +25,6 @@ public static class UmbracoBuilderApiExtensions
         builder.Services.AddSingleton<ISchemaIdHandler, SchemaIdHandler>();
         builder.Services.AddSingleton<ISubTypesSelector, SubTypesSelector>();
         builder.Services.AddSingleton<ISubTypesHandler, SubTypesHandler>();
-        builder.Services.AddSingleton<IDocumentInclusionSelector, DocumentInclusionSelector>();
         builder.Services.Configure<UmbracoPipelineOptions>(options => options.AddFilter(new SwaggerRouteTemplatePipelineFilter("UmbracoApiCommon")));
 
         return builder;

src/Umbraco.Cms.Api.Common/DependencyInjection/UmbracoBuilderAuthExtensions.cs

@@ -9,9 +9,9 @@ using Umbraco.Cms.Api.Common.Security;
 using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Configuration.Models;
 using Umbraco.Cms.Core.DependencyInjection;
-using Umbraco.Cms.Infrastructure.BackgroundJobs;
-using Umbraco.Cms.Infrastructure.BackgroundJobs.Jobs.DistributedJobs;
 using Umbraco.Cms.Core.Notifications;
+using Umbraco.Cms.Infrastructure.BackgroundJobs.Jobs;
+using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Api.Common.DependencyInjection;
 
@@ -29,6 +29,11 @@ public static class UmbracoBuilderAuthExtensions
 
     private static void ConfigureOpenIddict(IUmbracoBuilder builder)
     {
+        // Optionally hide tokens from the back-office.
+        var hideBackOfficeTokens = (builder.Config
+            .GetSection(Constants.Configuration.ConfigBackOfficeTokenCookie)
+            .Get<BackOfficeTokenCookieSettings>() ?? new BackOfficeTokenCookieSettings()).Enabled;
+
         builder.Services.AddOpenIddict()
             // Register the OpenIddict server components.
             .AddServer(options =>
@@ -115,24 +120,27 @@ public static class UmbracoBuilderAuthExtensions
                     configuration.UseSingletonHandler<ProcessRequestContextHandler>().SetOrder(OpenIddict.Server.AspNetCore.OpenIddictServerAspNetCoreHandlers.ResolveRequestUri.Descriptor.Order - 1);
                 });
 
-                options.AddEventHandler<OpenIddictServerEvents.ApplyTokenResponseContext>(configuration =>
+                if (hideBackOfficeTokens)
                 {
-                    configuration
-                        .UseSingletonHandler<HideBackOfficeTokensHandler>()
-                        .SetOrder(OpenIddict.Server.AspNetCore.OpenIddictServerAspNetCoreHandlers.ProcessJsonResponse<OpenIddictServerEvents.ApplyTokenResponseContext>.Descriptor.Order - 1);
-                });
-                options.AddEventHandler<OpenIddictServerEvents.ApplyAuthorizationResponseContext>(configuration =>
-                {
-                    configuration
-                        .UseSingletonHandler<HideBackOfficeTokensHandler>()
-                        .SetOrder(OpenIddict.Server.AspNetCore.OpenIddictServerAspNetCoreHandlers.Authentication.ProcessQueryResponse.Descriptor.Order - 1);
-                });
-                options.AddEventHandler<OpenIddictServerEvents.ExtractTokenRequestContext>(configuration =>
-                {
-                    configuration
-                        .UseSingletonHandler<HideBackOfficeTokensHandler>()
-                        .SetOrder(OpenIddict.Server.AspNetCore.OpenIddictServerAspNetCoreHandlers.ExtractPostRequest<OpenIddictServerEvents.ExtractTokenRequestContext>.Descriptor.Order + 1);
-                });
+                    options.AddEventHandler<OpenIddictServerEvents.ApplyTokenResponseContext>(configuration =>
+                    {
+                        configuration
+                            .UseSingletonHandler<HideBackOfficeTokensHandler>()
+                            .SetOrder(OpenIddict.Server.AspNetCore.OpenIddictServerAspNetCoreHandlers.ProcessJsonResponse<OpenIddictServerEvents.ApplyTokenResponseContext>.Descriptor.Order - 1);
+                    });
+                    options.AddEventHandler<OpenIddictServerEvents.ApplyAuthorizationResponseContext>(configuration =>
+                    {
+                        configuration
+                            .UseSingletonHandler<HideBackOfficeTokensHandler>()
+                            .SetOrder(OpenIddict.Server.AspNetCore.OpenIddictServerAspNetCoreHandlers.Authentication.ProcessQueryResponse.Descriptor.Order - 1);
+                    });
+                    options.AddEventHandler<OpenIddictServerEvents.ExtractTokenRequestContext>(configuration =>
+                    {
+                        configuration
+                            .UseSingletonHandler<HideBackOfficeTokensHandler>()
+                            .SetOrder(OpenIddict.Server.AspNetCore.OpenIddictServerAspNetCoreHandlers.ExtractPostRequest<OpenIddictServerEvents.ExtractTokenRequestContext>.Descriptor.Order + 1);
+                    });
+                }
             })
 
             // Register the OpenIddict validation components.
@@ -158,18 +166,24 @@ public static class UmbracoBuilderAuthExtensions
                     configuration.UseSingletonHandler<ProcessRequestContextHandler>().SetOrder(OpenIddict.Validation.AspNetCore.OpenIddictValidationAspNetCoreHandlers.ResolveRequestUri.Descriptor.Order - 1);
                 });
 
-                options.AddEventHandler<OpenIddictValidationEvents.ProcessAuthenticationContext>(configuration =>
+                if (hideBackOfficeTokens)
                 {
-                    configuration
-                        .UseSingletonHandler<HideBackOfficeTokensHandler>()
-                        // IMPORTANT: the handler must be AFTER the built-in query string handler, because the client-side SignalR library sometimes appends access tokens to the query string.
-                        .SetOrder(OpenIddict.Validation.AspNetCore.OpenIddictValidationAspNetCoreHandlers.ExtractAccessTokenFromQueryString.Descriptor.Order + 1);
-                });
+                    options.AddEventHandler<OpenIddictValidationEvents.ProcessAuthenticationContext>(configuration =>
+                    {
+                        configuration
+                            .UseSingletonHandler<HideBackOfficeTokensHandler>()
+                            // IMPORTANT: the handler must be AFTER the built-in query string handler, because the client-side SignalR library sometimes appends access tokens to the query string.
+                            .SetOrder(OpenIddict.Validation.AspNetCore.OpenIddictValidationAspNetCoreHandlers.ExtractAccessTokenFromQueryString.Descriptor.Order + 1);
+                    });
+                }
             });
 
-        builder.Services.AddSingleton<IDistributedBackgroundJob, OpenIddictCleanupJob>();
+        builder.Services.AddRecurringBackgroundJob<OpenIddictCleanupJob>();
         builder.Services.ConfigureOptions<ConfigureOpenIddict>();
 
-        builder.AddNotificationHandler<UserLogoutSuccessNotification, HideBackOfficeTokensHandler>();
+        if (hideBackOfficeTokens)
+        {
+            builder.AddNotificationHandler<UserLogoutSuccessNotification, HideBackOfficeTokensHandler>();
+        }
     }
 }

src/Umbraco.Cms.Api.Common/Extensions/MethodInfoApiCommonExtensions.cs

@@ -8,11 +8,11 @@ namespace Umbraco.Extensions;
 public static class MethodInfoApiCommonExtensions
 {
 
-    public static string GetMapToApiVersionAttributeValue(this MethodInfo methodInfo)
+    public static string? GetMapToApiVersionAttributeValue(this MethodInfo methodInfo)
     {
         MapToApiVersionAttribute[] mapToApis = methodInfo.GetCustomAttributes(typeof(MapToApiVersionAttribute), inherit: true).Cast<MapToApiVersionAttribute>().ToArray();
 
-        return string.Join("|", mapToApis.SelectMany(x => x.Versions));
+        return string.Join("|", mapToApis.SelectMany(x=>x.Versions));
     }
 
     public static string? GetMapToApiAttributeValue(this MethodInfo methodInfo)

src/Umbraco.Cms.Api.Common/OpenApi/DocumentInclusionSelector.cs

@@ -1,30 +0,0 @@
-using Asp.Versioning;
-using Microsoft.AspNetCore.Mvc.Abstractions;
-using Microsoft.AspNetCore.Mvc.ApiExplorer;
-using Microsoft.AspNetCore.Mvc.Controllers;
-using Umbraco.Cms.Api.Common.Configuration;
-using Umbraco.Extensions;
-
-namespace Umbraco.Cms.Api.Common.OpenApi;
-
-/// <summary>
-/// Determines whether an API description should be included in a specific documentation set based on the document name
-/// and API metadata.
-/// </summary>
-public class DocumentInclusionSelector : IDocumentInclusionSelector
-{
-    /// <inheritdoc/>
-    public bool Include(string documentName, ApiDescription apiDescription)
-    {
-        if (apiDescription.ActionDescriptor is ControllerActionDescriptor controllerActionDescriptor
-            && controllerActionDescriptor.HasMapToApiAttribute(documentName))
-        {
-            return true;
-        }
-
-        ApiVersionMetadata apiVersionMetadata = apiDescription.ActionDescriptor.GetApiVersionMetadata();
-        return apiVersionMetadata.Name == documentName
-               || (string.IsNullOrEmpty(apiVersionMetadata.Name) && documentName == DefaultApiConfiguration.ApiName);
-    }
-}
-

src/Umbraco.Cms.Api.Common/OpenApi/EnumSchemaFilter.cs

@@ -1,27 +1,25 @@
 using System.Reflection;
 using System.Runtime.Serialization;
-using System.Text.Json.Nodes;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Any;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 
 namespace Umbraco.Cms.Api.Common.OpenApi;
 
 public class EnumSchemaFilter : ISchemaFilter
 {
-    public void Apply(IOpenApiSchema model, SchemaFilterContext context)
+    public void Apply(OpenApiSchema model, SchemaFilterContext context)
     {
-        if (model is not OpenApiSchema schema || context.Type.IsEnum is false)
+        if (context.Type.IsEnum)
         {
-            return;
-        }
-
-        schema.Type = JsonSchemaType.String;
-        schema.Format = null;
-        schema.Enum = new List<JsonNode>();
-        foreach (var name in Enum.GetNames(context.Type))
-        {
-            var actualName = context.Type.GetField(name)?.GetCustomAttribute<EnumMemberAttribute>()?.Value ?? name;
-            schema.Enum.Add(actualName);
+            model.Type = "string";
+            model.Format = null;
+            model.Enum.Clear();
+            foreach (var name in Enum.GetNames(context.Type))
+            {
+                var actualName = context.Type.GetField(name)?.GetCustomAttribute<EnumMemberAttribute>()?.Value ?? name;
+                model.Enum.Add(new OpenApiString(actualName));
+            }
         }
     }
 }

src/Umbraco.Cms.Api.Common/OpenApi/IDocumentInclusionSelector.cs

@@ -1,19 +0,0 @@
-using Microsoft.AspNetCore.Mvc.ApiExplorer;
-
-namespace Umbraco.Cms.Api.Common.OpenApi;
-
-/// <summary>
-/// Defines a method that determines whether a given API description should be included in a specific documentation
-/// document.
-/// </summary>
-public interface IDocumentInclusionSelector
-{
-    /// <summary>
-    /// Determines whether the specified API description should be included in the generated documentation for the given
-    /// document name.
-    /// </summary>
-    /// <param name="documentName">The name of the documentation document being generated.</param>
-    /// <param name="apiDescription">The API description to evaluate for inclusion.</param>
-    /// <returns>true if the API description should be included in the documentation; otherwise, false.</returns>
-    bool Include(string documentName, ApiDescription apiDescription);
-}

src/Umbraco.Cms.Api.Common/OpenApi/MimeTypeDocumentFilter.cs

@@ -1,4 +1,4 @@
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using Umbraco.Extensions;
 
@@ -21,32 +21,25 @@ public class MimeTypeDocumentFilter : IDocumentFilter
         }
 
         OpenApiOperation[] operations = swaggerDoc.Paths
-            .SelectMany(path => path.Value.Operations?.Values ?? Enumerable.Empty<OpenApiOperation>())
+            .SelectMany(path => path.Value.Operations.Values)
             .ToArray();
 
-        void RemoveUnwantedMimeTypes(IDictionary<string, OpenApiMediaType>? content)
+        void RemoveUnwantedMimeTypes(IDictionary<string, OpenApiMediaType> content)
         {
-            if (content is null || content.ContainsKey("application/json") is false)
+            if (content.ContainsKey("application/json"))
             {
-                return;
+                content.RemoveAll(r => r.Key != "application/json");
             }
 
-            content.RemoveAll(r => r.Key != "application/json");
         }
 
-        OpenApiRequestBody[] requestBodies = operations
-            .Select(operation => operation.RequestBody)
-            .OfType<OpenApiRequestBody>()
-            .ToArray();
+        OpenApiRequestBody[] requestBodies = operations.Select(operation => operation.RequestBody).WhereNotNull().ToArray();
         foreach (OpenApiRequestBody requestBody in requestBodies)
         {
             RemoveUnwantedMimeTypes(requestBody.Content);
         }
 
-        OpenApiResponse[] responses = operations
-            .SelectMany(operation => operation.Responses?.Values ?? Enumerable.Empty<IOpenApiResponse>())
-            .OfType<OpenApiResponse>()
-            .ToArray();
+        OpenApiResponse[] responses = operations.SelectMany(operation => operation.Responses.Values).WhereNotNull().ToArray();
         foreach (OpenApiResponse response in responses)
         {
             RemoveUnwantedMimeTypes(response.Content);

src/Umbraco.Cms.Api.Common/OpenApi/RemoveSecuritySchemesDocumentFilter.cs

@@ -1,4 +1,4 @@
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 
 namespace Umbraco.Cms.Api.Common.OpenApi;
@@ -20,6 +20,6 @@ public class RemoveSecuritySchemesDocumentFilter : IDocumentFilter
             return;
         }
 
-        swaggerDoc.Components?.SecuritySchemes?.Clear();
+        swaggerDoc.Components.SecuritySchemes.Clear();
     }
 }

src/Umbraco.Cms.Api.Common/OpenApi/SubTypesSelector.cs

@@ -15,6 +15,20 @@ public class SubTypesSelector : ISubTypesSelector
     private readonly IEnumerable<ISubTypesHandler> _subTypeHandlers;
     private readonly IUmbracoJsonTypeInfoResolver _umbracoJsonTypeInfoResolver;
 
+    [Obsolete("The settings parameter is not required anymore, use the other constructor instead. Scheduled for removal in Umbraco 17.")]
+    public SubTypesSelector(
+        IOptions<GlobalSettings> settings,
+        IHostingEnvironment hostingEnvironment,
+        IHttpContextAccessor httpContextAccessor,
+        IEnumerable<ISubTypesHandler> subTypeHandlers,
+        IUmbracoJsonTypeInfoResolver umbracoJsonTypeInfoResolver)
+    {
+        _hostingEnvironment = hostingEnvironment;
+        _httpContextAccessor = httpContextAccessor;
+        _subTypeHandlers = subTypeHandlers;
+        _umbracoJsonTypeInfoResolver = umbracoJsonTypeInfoResolver;
+    }
+
     public SubTypesSelector(
         IHostingEnvironment hostingEnvironment,
         IHttpContextAccessor httpContextAccessor,

src/Umbraco.Cms.Api.Common/OpenApi/SwaggerRouteTemplatePipelineFilter.cs

@@ -3,12 +3,13 @@ using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Options;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using Swashbuckle.AspNetCore.SwaggerUI;
 using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Hosting;
 using Umbraco.Cms.Web.Common.ApplicationBuilder;
+using Umbraco.Extensions;
 using IHostingEnvironment = Umbraco.Cms.Core.Hosting.IHostingEnvironment;
 
 namespace Umbraco.Cms.Api.Common.OpenApi;

src/Umbraco.Cms.Api.Common/Security/ExposeBackOfficeAuthenticationOpenIddictServerEventsHandler.cs

@@ -1,84 +0,0 @@
-using System.Security.Claims;
-using Microsoft.AspNetCore.Authentication;
-using Microsoft.AspNetCore.Http;
-using Microsoft.Extensions.Options;
-using OpenIddict.Server;
-using Umbraco.Cms.Core.Configuration.Models;
-using Umbraco.Cms.Core.Security;
-using Umbraco.Extensions;
-
-namespace Umbraco.Cms.Infrastructure.Security;
-
-/// <summary>
-/// Provides OpenIddict server event handlers to expose the backoffice authentication token via a custom authentication scheme.
-/// </summary>
-public class ExposeBackOfficeAuthenticationOpenIddictServerEventsHandler : IOpenIddictServerHandler<OpenIddictServerEvents.GenerateTokenContext>,
-    IOpenIddictServerHandler<OpenIddictServerEvents.ApplyRevocationResponseContext>
-{
-    private readonly IHttpContextAccessor _httpContextAccessor;
-    private readonly string[] _claimTypes;
-    private readonly TimeSpan _timeOut;
-
-    /// <summary>
-    /// Initializes a new instance of the <see cref="ExposeBackOfficeAuthenticationOpenIddictServerEventsHandler"/> class.
-    /// </summary>
-    public ExposeBackOfficeAuthenticationOpenIddictServerEventsHandler(
-        IHttpContextAccessor httpContextAccessor,
-        IOptions<GlobalSettings> globalSettings,
-        IOptions<BackOfficeIdentityOptions> backOfficeIdentityOptions)
-    {
-        _httpContextAccessor = httpContextAccessor;
-        _timeOut = globalSettings.Value.TimeOut;
-
-        // These are the type identifiers for the claims required by the principal
-        // for the custom authentication scheme.
-        // We make available the ID, user name and allowed applications (sections) claims.
-        _claimTypes =
-        [
-            backOfficeIdentityOptions.Value.ClaimsIdentity.UserIdClaimType,
-            backOfficeIdentityOptions.Value.ClaimsIdentity.UserNameClaimType,
-            Core.Constants.Security.AllowedApplicationsClaimType,
-        ];
-    }
-
-    /// <inheritdoc/>
-    /// <remarks>
-    /// Event handler for when access tokens are generated (created or refreshed).
-    /// </remarks>
-    public async ValueTask HandleAsync(OpenIddictServerEvents.GenerateTokenContext context)
-    {
-        // Only proceed if this is a back-office sign-in.
-        if (context.Principal.Identity?.AuthenticationType != Core.Constants.Security.BackOfficeAuthenticationType)
-        {
-            return;
-        }
-
-        // Create a new principal with the claims from the authenticated principal.
-        var principal = new ClaimsPrincipal(
-            new ClaimsIdentity(
-                context.Principal.Claims.Where(claim => _claimTypes.Contains(claim.Type)),
-                Core.Constants.Security.BackOfficeExposedAuthenticationType));
-
-        // Sign-in the new principal for the custom authentication scheme.
-        await _httpContextAccessor
-            .GetRequiredHttpContext()
-            .SignInAsync(Core.Constants.Security.BackOfficeExposedAuthenticationType, principal, GetAuthenticationProperties());
-    }
-
-    /// <inheritdoc/>
-    /// <remarks>
-    /// Event handler for when access tokens are revoked.
-    /// </remarks>
-    public async ValueTask HandleAsync(OpenIddictServerEvents.ApplyRevocationResponseContext context)
-        => await _httpContextAccessor
-            .GetRequiredHttpContext()
-            .SignOutAsync(Core.Constants.Security.BackOfficeExposedAuthenticationType, GetAuthenticationProperties());
-
-    private AuthenticationProperties GetAuthenticationProperties()
-        => new()
-        {
-            IsPersistent = true,
-            IssuedUtc = DateTimeOffset.UtcNow,
-            ExpiresUtc = DateTimeOffset.UtcNow.Add(_timeOut)
-        };
-}

src/Umbraco.Cms.Api.Common/Umbraco.Cms.Api.Common.csproj

@@ -4,12 +4,6 @@
     <Description>Contains the bits and pieces that are shared between the Umbraco CMS APIs.</Description>
   </PropertyGroup>
 
-  <ItemGroup>
-    <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
-      <_Parameter1>Umbraco.Tests.UnitTests</_Parameter1>
-    </AssemblyAttribute>
-  </ItemGroup>
-
   <ItemGroup>
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
   </ItemGroup>
@@ -22,6 +16,11 @@
     <PackageReference Include="OpenIddict.AspNetCore" />
   </ItemGroup>
 
+  <ItemGroup>
+    <!-- Take top-level depedendency on OpenIddict.AspNetCore depends on a vulnerable version -->
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Umbraco.Core\Umbraco.Core.csproj" />
     <ProjectReference Include="..\Umbraco.Web.Common\Umbraco.Web.Common.csproj" />

src/Umbraco.Cms.Api.Delivery/CLAUDE.md

@@ -1,382 +0,0 @@
-# Umbraco.Cms.Api.Delivery
-
-Headless content delivery REST API for Umbraco CMS. Enables frontend applications to fetch published content, media, and member-protected resources.
-
----
-
-## 1. Architecture
-
-**Type**: Class Library (NuGet Package)
-**Target Framework**: .NET 10.0
-**Purpose**: Content Delivery API for headless CMS scenarios
-
-### Key Technologies
-
-- **ASP.NET Core** - Web framework
-- **OpenIddict** - Member authentication (OAuth 2.0)
-- **Asp.Versioning** - API versioning (V1, V2)
-- **Output Caching** - Configurable response caching
-- **Examine/Lucene** - Content querying
-
-### Dependencies
-
-- `Umbraco.Cms.Api.Common` - Shared API infrastructure (OpenAPI, auth)
-- `Umbraco.Web.Common` - Web functionality
-
-### Project Structure (86 files)
-
-```
-Umbraco.Cms.Api.Delivery/
-├── Controllers/
-│   ├── Content/               # Content endpoints (by ID, route, query)
-│   ├── Media/                 # Media endpoints (by ID, path, query)
-│   └── Security/              # Member auth (authorize, token, signout)
-├── Querying/
-│   ├── Filters/               # ContentType, Name, CreateDate, UpdateDate
-│   ├── Selectors/             # Ancestors, Children, Descendants
-│   └── Sorts/                 # Name, CreateDate, UpdateDate, Level, SortOrder
-├── Indexing/                  # Lucene index field handlers
-├── Services/                  # Business logic and query building
-├── Caching/                   # Output cache policies
-├── Rendering/                 # Output expansion strategies
-├── Configuration/             # Swagger configuration
-└── Filters/                   # Action filters (access, validation)
-```
-
-### Design Patterns
-
-1. **Strategy Pattern** - Query handlers (`ISelectorHandler`, `IFilterHandler`, `ISortHandler`)
-2. **Factory Pattern** - `ApiContentQueryFactory` builds Examine queries
-3. **Template Method** - `ContentApiControllerBase` for shared controller logic
-4. **Options Pattern** - `DeliveryApiSettings` for all configuration
-
----
-
-## 2. Commands
-
-See "Quick Reference" section at bottom for common commands.
-
----
-
-## 3. Key Patterns
-
-### API Versioning (V1 vs V2)
-
-**V1** (legacy) and **V2** (current) coexist. Key difference is output expansion:
-
-```csharp
-// DependencyInjection/UmbracoBuilderExtensions.cs:49-52
-// V1 uses RequestContextOutputExpansionStrategy
-// V2+ uses RequestContextOutputExpansionStrategyV2
-return apiVersion.MajorVersion == 1
-    ? provider.GetRequiredService<RequestContextOutputExpansionStrategy>()
-    : provider.GetRequiredService<RequestContextOutputExpansionStrategyV2>();
-```
-
-**Why V2**: Improved `expand` and `fields` query parameter parsing (tree-based).
-
-### Query System Architecture
-
-Content querying flows through handlers registered in DI:
-
-1. **Selectors** (`fetch` parameter): `ancestors:id`, `children:id`, `descendants:id`
-2. **Filters** (`filter[]` parameter): `contentType:alias`, `name:value`, `createDate>2024-01-01`
-3. **Sorts** (`sort[]` parameter): `name:asc`, `createDate:desc`, `level:asc`
-
-```csharp
-// Services/ApiContentQueryService.cs:91-96
-ISelectorHandler? selectorHandler = _selectorHandlers.FirstOrDefault(h => h.CanHandle(fetch));
-return selectorHandler?.BuildSelectorOption(fetch);
-```
-
-### Path Decoding Workaround
-
-ASP.NET Core doesn't decode forward slashes in route parameters:
-
-```csharp
-// Controllers/DeliveryApiControllerBase.cs:21-31
-// OpenAPI clients URL-encode paths, but ASP.NET Core doesn't decode "/"
-// See https://github.com/dotnet/aspnetcore/issues/11544
-if (path.Contains("%2F", StringComparison.OrdinalIgnoreCase))
-{
-    path = WebUtility.UrlDecode(path);
-}
-```
-
----
-
-## 4. Testing
-
-**Location**: No direct tests - tested via integration tests in test projects
-
-```bash
-dotnet test tests/Umbraco.Tests.Integration/ --filter "FullyQualifiedName~Delivery"
-```
-
-**Internals exposed to** (csproj lines 28-36):
-- `Umbraco.Tests.UnitTests`
-- `Umbraco.Tests.Integration`
-- `DynamicProxyGenAssembly2` (for mocking)
-
-**Focus areas**:
-- Query parsing (selectors, filters, sorts)
-- Member authentication flows
-- Output caching behavior
-- Protected content access
-
----
-
-## 5. Security & Access Control
-
-### Three Access Modes
-
-```csharp
-// Services/ApiAccessService.cs:21-27
-public bool HasPublicAccess() => _deliveryApiSettings.PublicAccess || HasValidApiKey();
-public bool HasPreviewAccess() => HasValidApiKey();
-public bool HasMediaAccess() => _deliveryApiSettings is { PublicAccess: true, Media.PublicAccess: true } || HasValidApiKey();
-```
-
-**Access levels**:
-1. **Public** - No authentication required (if enabled)
-2. **API Key** - Via `Api-Key` header
-3. **Preview** - Always requires API key
-
-### Member Authentication
-
-OpenIddict-based OAuth 2.0 for member-protected content:
-
-**Flows supported** (Controllers/Security/MemberController.cs):
-- Authorization Code + PKCE (line 53)
-- Client Credentials (line 112)
-- Refresh Token (line 98)
-
-**Endpoints**:
-- `GET /umbraco/delivery/api/v1/security/member/authorize`
-- `POST /umbraco/delivery/api/v1/security/member/token`
-- `GET /umbraco/delivery/api/v1/security/member/signout`
-
-**Scopes**: Only `openid` and `offline_access` allowed for members (line 220-222)
-
-### Protected Content
-
-Member access checked via `ProtectedAccess` model:
-
-```csharp
-// Controllers/Content/QueryContentApiController.cs:56-57
-ProtectedAccess protectedAccess = await _requestMemberAccessService.MemberAccessAsync();
-Attempt<PagedModel<Guid>, ApiContentQueryOperationStatus> queryAttempt =
-    _apiContentQueryService.ExecuteQuery(fetch, filter, sort, protectedAccess, skip, take);
-```
-
----
-
-## 6. Output Caching
-
-### Cache Policy Configuration
-
-```csharp
-// DependencyInjection/UmbracoBuilderExtensions.cs:120-136
-// Content and Media have separate cache durations
-options.AddPolicy(
-    Constants.DeliveryApi.OutputCache.ContentCachePolicy,
-    new DeliveryApiOutputCachePolicy(
-        outputCacheSettings.ContentDuration,
-        new StringValues([AcceptLanguage, AcceptSegment, StartItem])));
-```
-
-**Cache invalidation conditions** (Caching/DeliveryApiOutputCachePolicy.cs:31):
-```csharp
-// Never cache preview or non-public access
-context.EnableOutputCaching = requestPreviewService.IsPreview() is false
-    && apiAccessService.HasPublicAccess();
-```
-
-**Vary by headers**: `Accept-Language`, `Accept-Segment`, `Start-Item`
-
----
-
-## 7. Edge Cases & Known Issues
-
-### Technical Debt (TODOs in codebase)
-
-1. **V1 Removal Pending** (4 locations):
-   - `DependencyInjection/UmbracoBuilderExtensions.cs:98` - FIXME: remove matcher policy
-   - `Routing/DeliveryApiItemsEndpointsMatcherPolicy.cs:11` - FIXME: remove class
-   - `Filters/SwaggerDocumentationFilterBase.cs:79,83` - FIXME: remove V1 swagger docs
-
-2. **Obsolete Reference Warnings** (csproj:9-13):
-   - `ASP0019` - IHeaderDictionary.Append usage
-   - `CS0618/CS0612` - Obsolete member references
-
-### Empty Query Results
-
-Query service returns empty results (not errors) for invalid options:
-
-```csharp
-// Services/ApiContentQueryService.cs:54-78
-// Invalid selector/filter/sort returns fail status with empty result
-return Attempt.FailWithStatus(ApiContentQueryOperationStatus.SelectorOptionNotFound, emptyResult);
-```
-
-### Start Item Fallback
-
-When no `fetch` parameter provided, uses start item or all content:
-
-```csharp
-// Services/ApiContentQueryService.cs:99-112
-if (_requestStartItemProviderAccessor.TryGetValue(out IRequestStartItemProvider? requestStartItemProvider))
-{
-    IPublishedContent? startItem = requestStartItemProvider.GetStartItem();
-    // Use descendants of start item
-}
-return _apiContentQueryProvider.AllContentSelectorOption(); // Fallback to all
-```
-
----
-
-## 8. Project-Specific Notes
-
-### V1 vs V2 Differences
-
-| Feature | V1 | V2 |
-|---------|----|----|
-| Output expansion | Basic | Tree-based parsing |
-| `expand` parameter | Flat list | Nested syntax |
-| `fields` parameter | Limited | Full property selection |
-| Default expansion strategy | `RequestContextOutputExpansionStrategy` | `RequestContextOutputExpansionStrategyV2` |
-
-**Migration note**: V1 is deprecated; plan removal when V17+ drops V1 support.
-
-### JSON Configuration
-
-Delivery API has its own JSON options (distinct from Management API):
-
-```csharp
-// DependencyInjection/UmbracoBuilderExtensions.cs:82-88
-.AddJsonOptions(Constants.JsonOptionsNames.DeliveryApi, options =>
-{
-    options.JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
-    options.JsonSerializerOptions.TypeInfoResolver = new DeliveryApiJsonTypeResolver();
-    options.JsonSerializerOptions.Converters.Add(new JsonStringEnumConverter());
-});
-```
-
-### Member Token Revocation
-
-Tokens automatically revoked on member changes:
-
-```csharp
-// DependencyInjection/UmbracoBuilderExtensions.cs:93-96
-builder.AddNotificationAsyncHandler<MemberSavedNotification, RevokeMemberAuthenticationTokensNotificationHandler>();
-builder.AddNotificationAsyncHandler<MemberDeletedNotification, RevokeMemberAuthenticationTokensNotificationHandler>();
-builder.AddNotificationAsyncHandler<AssignedMemberRolesNotification, RevokeMemberAuthenticationTokensNotificationHandler>();
-builder.AddNotificationAsyncHandler<RemovedMemberRolesNotification, RevokeMemberAuthenticationTokensNotificationHandler>();
-```
-
-### External Dependencies
-
-**Examine/Lucene** (via Core):
-- Powers content querying
-- Selector/Filter/Sort handlers build Lucene queries
-
-**OpenIddict** (via Api.Common):
-- Member OAuth 2.0 authentication
-- Reference tokens (not JWT)
-
-### Configuration (appsettings.json)
-
-```json
-{
-  "Umbraco": {
-    "CMS": {
-      "DeliveryApi": {
-        "Enabled": true,
-        "PublicAccess": true,
-        "ApiKey": "your-api-key",
-        "Media": {
-          "Enabled": true,
-          "PublicAccess": true
-        },
-        "MemberAuthorization": {
-          "AuthorizationCodeFlow": { "Enabled": true },
-          "ClientCredentialsFlow": { "Enabled": false }
-        },
-        "OutputCache": {
-          "Enabled": true,
-          "ContentDuration": "00:01:00",
-          "MediaDuration": "00:01:00"
-        }
-      }
-    }
-  }
-}
-```
-
-### API Endpoints Summary
-
-**Content** (`/umbraco/delivery/api/v2/content`):
-- `GET /item/{id}` - Single content by GUID
-- `GET /item/{path}` - Single content by route
-- `GET /items` - Multiple by IDs
-- `GET /` - Query with fetch/filter/sort
-
-**Media** (`/umbraco/delivery/api/v2/media`):
-- `GET /item/{id}` - Single media by GUID
-- `GET /item/{path}` - Single media by path
-- `GET /items` - Multiple by IDs
-- `GET /` - Query media
-
-**Security** (`/umbraco/delivery/api/v1/security/member`):
-- `GET /authorize` - Start OAuth flow
-- `POST /token` - Exchange code for token
-- `GET /signout` - Revoke session
-
----
-
-## Quick Reference
-
-### Essential Commands
-
-```bash
-# Build project
-dotnet build src/Umbraco.Cms.Api.Delivery/Umbraco.Cms.Api.Delivery.csproj
-
-# Pack for NuGet
-dotnet pack src/Umbraco.Cms.Api.Delivery/Umbraco.Cms.Api.Delivery.csproj -c Release
-
-# Run integration tests
-dotnet test tests/Umbraco.Tests.Integration/ --filter "FullyQualifiedName~Delivery"
-
-# Check packages
-dotnet list src/Umbraco.Cms.Api.Delivery/Umbraco.Cms.Api.Delivery.csproj package --outdated
-```
-
-### Key Classes
-
-| Class | Purpose | File |
-|-------|---------|------|
-| `DeliveryApiControllerBase` | Base controller with path decoding | Controllers/DeliveryApiControllerBase.cs |
-| `ApiContentQueryService` | Query orchestration | Services/ApiContentQueryService.cs |
-| `ApiAccessService` | Access control logic | Services/ApiAccessService.cs |
-| `DeliveryApiOutputCachePolicy` | Cache policy implementation | Caching/DeliveryApiOutputCachePolicy.cs |
-| `MemberController` | OAuth endpoints | Controllers/Security/MemberController.cs |
-| `RequestContextOutputExpansionStrategyV2` | V2 output expansion | Rendering/RequestContextOutputExpansionStrategyV2.cs |
-
-### Important Files
-
-- `Umbraco.Cms.Api.Delivery.csproj` - Project dependencies
-- `DependencyInjection/UmbracoBuilderExtensions.cs` - DI registration (lines 33-141)
-- `Configuration/DeliveryApiConfiguration.cs` - API constants
-- `Services/ApiContentQueryService.cs` - Query execution
-
-### Getting Help
-
-- **Root documentation**: `/CLAUDE.md` - Repository overview
-- **API Common patterns**: `/src/Umbraco.Cms.Api.Common/CLAUDE.md`
-- **Official docs**: https://docs.umbraco.com/umbraco-cms/reference/content-delivery-api
-- **Media docs**: https://docs.umbraco.com/umbraco-cms/reference/content-delivery-api/media-delivery-api
-
----
-
-**This library exposes Umbraco content and media via REST for headless scenarios. Focus on query handlers, access control, and member authentication when working here.**

src/Umbraco.Cms.Api.Delivery/Configuration/ConfigureUmbracoDeliveryApiSwaggerGenOptions.cs

@@ -1,6 +1,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using Umbraco.Cms.Api.Common.OpenApi;
 using Umbraco.Cms.Api.Delivery.Filters;

src/Umbraco.Cms.Api.Delivery/Configuration/ConfigureUmbracoMemberAuthenticationDeliveryApiSwaggerGenOptions.cs

@@ -1,6 +1,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using Umbraco.Cms.Api.Common.Security;
 using Umbraco.Cms.Api.Delivery.Controllers.Content;
@@ -35,9 +35,23 @@ public class ConfigureUmbracoMemberAuthenticationDeliveryApiSwaggerGenOptions :
                 return;
             }
 
-            var schemaRef = new OpenApiSecuritySchemeReference(AuthSchemeName, context.Document);
-            operation.Security ??= new List<OpenApiSecurityRequirement>();
-            operation.Security.Add(new OpenApiSecurityRequirement { [schemaRef] = [] });
+            operation.Security = new List<OpenApiSecurityRequirement>
+            {
+                new OpenApiSecurityRequirement
+                {
+                    {
+                        new OpenApiSecurityScheme
+                        {
+                            Reference = new OpenApiReference
+                            {
+                                Type = ReferenceType.SecurityScheme,
+                                Id = AuthSchemeName,
+                            }
+                        },
+                        []
+                    }
+                }
+            };
         }
 
         public void Apply(OpenApiDocument swaggerDoc, DocumentFilterContext context)
@@ -47,7 +61,7 @@ public class ConfigureUmbracoMemberAuthenticationDeliveryApiSwaggerGenOptions :
                 return;
             }
 
-            swaggerDoc.AddComponent(
+            swaggerDoc.Components.SecuritySchemes.Add(
                 AuthSchemeName,
                 new OpenApiSecurityScheme
                 {
@@ -60,9 +74,9 @@ public class ConfigureUmbracoMemberAuthenticationDeliveryApiSwaggerGenOptions :
                         AuthorizationCode = new OpenApiOAuthFlow
                         {
                             AuthorizationUrl = new Uri(Paths.MemberApi.AuthorizationEndpoint, UriKind.Relative),
-                            TokenUrl = new Uri(Paths.MemberApi.TokenEndpoint, UriKind.Relative),
-                        },
-                    },
+                            TokenUrl = new Uri(Paths.MemberApi.TokenEndpoint, UriKind.Relative)
+                        }
+                    }
                 });
         }
     }

src/Umbraco.Cms.Api.Delivery/Controllers/Content/ByRouteContentApiController.cs

@@ -99,8 +99,8 @@ public class ByRouteContentApiController : ContentApiItemControllerBase
 
     private IActionResult RedirectTo(IApiContentRoute redirectRoute)
     {
-        Response.Headers.Append("Location-Start-Item-Path", redirectRoute.StartItem.Path);
-        Response.Headers.Append("Location-Start-Item-Id", redirectRoute.StartItem.Id.ToString("D"));
+        Response.Headers.Add("Location-Start-Item-Path", redirectRoute.StartItem.Path);
+        Response.Headers.Add("Location-Start-Item-Id", redirectRoute.StartItem.Id.ToString("D"));
         return RedirectPermanent(redirectRoute.Path);
     }
 }

src/Umbraco.Cms.Api.Delivery/Filters/SwaggerContentDocumentationFilter.cs

@@ -1,9 +1,9 @@
-using System.Text.Json.Nodes;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Any;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using Umbraco.Cms.Api.Delivery.Configuration;
+using Umbraco.Cms.Api.Delivery.Controllers;
 using Umbraco.Cms.Api.Delivery.Controllers.Content;
-using Umbraco.Cms.Core;
 
 namespace Umbraco.Cms.Api.Delivery.Filters;
 
@@ -13,7 +13,7 @@ internal sealed class SwaggerContentDocumentationFilter : SwaggerDocumentationFi
 
     protected override void ApplyOperation(OpenApiOperation operation, OperationFilterContext context)
     {
-        operation.Parameters ??= new List<IOpenApiParameter>();
+        operation.Parameters ??= new List<OpenApiParameter>();
 
         AddExpand(operation, context);
 
@@ -21,50 +21,50 @@ internal sealed class SwaggerContentDocumentationFilter : SwaggerDocumentationFi
 
         operation.Parameters.Add(new OpenApiParameter
         {
-            Name = Constants.DeliveryApi.HeaderNames.AcceptLanguage,
+            Name = Core.Constants.DeliveryApi.HeaderNames.AcceptLanguage,
             In = ParameterLocation.Header,
             Required = false,
             Description = "Defines the language to return. Use this when querying language variant content items.",
-            Schema = new OpenApiSchema { Type = JsonSchemaType.String },
-            Examples = new Dictionary<string, IOpenApiExample>
+            Schema = new OpenApiSchema { Type = "string" },
+            Examples = new Dictionary<string, OpenApiExample>
             {
-                { "Default", new OpenApiExample { Value = string.Empty } },
-                { "English culture", new OpenApiExample { Value = "en-us" } },
-            },
+                { "Default", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+                { "English culture", new OpenApiExample { Value = new OpenApiString("en-us") } }
+            }
         });
 
         operation.Parameters.Add(new OpenApiParameter
         {
-            Name = Constants.DeliveryApi.HeaderNames.AcceptSegment,
+            Name = Core.Constants.DeliveryApi.HeaderNames.AcceptSegment,
             In = ParameterLocation.Header,
             Required = false,
             Description = "Defines the segment to return. Use this when querying segment variant content items.",
-            Schema = new OpenApiSchema { Type = JsonSchemaType.String },
-            Examples = new Dictionary<string, IOpenApiExample>
+            Schema = new OpenApiSchema { Type = "string" },
+            Examples = new Dictionary<string, OpenApiExample>
             {
-                { "Default", new OpenApiExample { Value = string.Empty } },
-                { "Segment One", new OpenApiExample { Value = "segment-one" } },
-            },
+                { "Default", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+                { "Segment One", new OpenApiExample { Value = new OpenApiString("segment-one") } }
+            }
         });
 
         AddApiKey(operation);
 
         operation.Parameters.Add(new OpenApiParameter
         {
-            Name = Constants.DeliveryApi.HeaderNames.Preview,
+            Name = Core.Constants.DeliveryApi.HeaderNames.Preview,
             In = ParameterLocation.Header,
             Required = false,
             Description = "Whether to request draft content.",
-            Schema = new OpenApiSchema { Type = JsonSchemaType.Boolean },
+            Schema = new OpenApiSchema { Type = "boolean" }
         });
 
         operation.Parameters.Add(new OpenApiParameter
         {
-            Name = Constants.DeliveryApi.HeaderNames.StartItem,
+            Name = Core.Constants.DeliveryApi.HeaderNames.StartItem,
             In = ParameterLocation.Header,
             Required = false,
             Description = "URL segment or GUID of a root content item.",
-            Schema = new OpenApiSchema { Type = JsonSchemaType.String },
+            Schema = new OpenApiSchema { Type = "string" }
         });
     }
 
@@ -92,36 +92,105 @@ internal sealed class SwaggerContentDocumentationFilter : SwaggerDocumentationFi
         }
     }
 
-    private Dictionary<string, IOpenApiExample> FetchQueryParameterExamples() =>
+    private Dictionary<string, OpenApiExample> FetchQueryParameterExamples() =>
         new()
         {
-            { "Select all", new OpenApiExample { Value = string.Empty } },
-            { "Select all ancestors of a node by id", new OpenApiExample { Value = "ancestors:id" } },
-            { "Select all ancestors of a node by path", new OpenApiExample { Value = "ancestors:path" } },
-            { "Select all children of a node by id", new OpenApiExample { Value = "children:id" } },
-            { "Select all children of a node by path", new OpenApiExample { Value = "children:path" } },
-            { "Select all descendants of a node by id", new OpenApiExample { Value = "descendants:id" } },
-            { "Select all descendants of a node by path", new OpenApiExample { Value = "descendants:path" } },
+            { "Select all", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+            {
+                "Select all ancestors of a node by id",
+                new OpenApiExample { Value = new OpenApiString("ancestors:id") }
+            },
+            {
+                "Select all ancestors of a node by path",
+                new OpenApiExample { Value = new OpenApiString("ancestors:path") }
+            },
+            {
+                "Select all children of a node by id",
+                new OpenApiExample { Value = new OpenApiString("children:id") }
+            },
+            {
+                "Select all children of a node by path",
+                new OpenApiExample { Value = new OpenApiString("children:path") }
+            },
+            {
+                "Select all descendants of a node by id",
+                new OpenApiExample { Value = new OpenApiString("descendants:id") }
+            },
+            {
+                "Select all descendants of a node by path",
+                new OpenApiExample { Value = new OpenApiString("descendants:path") }
+            }
         };
 
-    private Dictionary<string, IOpenApiExample> FilterQueryParameterExamples() =>
+    private Dictionary<string, OpenApiExample> FilterQueryParameterExamples() =>
         new()
         {
-            { "Default filter", new OpenApiExample { Value = string.Empty } },
-            { "Filter by content type (equals)", new OpenApiExample { Value = new JsonArray { "contentType:alias1" } } },
-            { "Filter by name (contains)", new OpenApiExample { Value = new JsonArray { "name:nodeName" } } },
-            { "Filter by creation date (less than)", new OpenApiExample { Value = new JsonArray { "createDate<2024-01-01" } } },
-            { "Filter by update date (greater than or equal)", new OpenApiExample { Value = new JsonArray { "updateDate>:2023-01-01" } } },
+            { "Default filter", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+            {
+                "Filter by content type (equals)",
+                new OpenApiExample { Value = new OpenApiArray { new OpenApiString("contentType:alias1") } }
+            },
+            {
+                "Filter by name (contains)",
+                new OpenApiExample { Value = new OpenApiArray { new OpenApiString("name:nodeName") } }
+            },
+            {
+                "Filter by creation date (less than)",
+                new OpenApiExample { Value = new OpenApiArray { new OpenApiString("createDate<2024-01-01") } }
+            },
+            {
+                "Filter by update date (greater than or equal)",
+                new OpenApiExample { Value = new OpenApiArray { new OpenApiString("updateDate>:2023-01-01") } }
+            }
         };
 
-    private Dictionary<string, IOpenApiExample> SortQueryParameterExamples() =>
+    private Dictionary<string, OpenApiExample> SortQueryParameterExamples() =>
         new()
         {
-            { "Default sort", new OpenApiExample { Value = string.Empty } },
-            { "Sort by create date", new OpenApiExample { Value = new JsonArray { "createDate:asc", "createDate:desc" } } },
-            { "Sort by level", new OpenApiExample { Value = new JsonArray { "level:asc", "level:desc" } } },
-            { "Sort by name", new OpenApiExample { Value = new JsonArray { "name:asc", "name:desc" } } },
-            { "Sort by sort order", new OpenApiExample { Value = new JsonArray { "sortOrder:asc", "sortOrder:desc" } } },
-            { "Sort by update date", new OpenApiExample { Value = new JsonArray { "updateDate:asc", "updateDate:desc" } } },
+            { "Default sort", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+            {
+                "Sort by create date",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray
+                    {
+                        new OpenApiString("createDate:asc"), new OpenApiString("createDate:desc")
+                    }
+                }
+            },
+            {
+                "Sort by level",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray { new OpenApiString("level:asc"), new OpenApiString("level:desc") }
+                }
+            },
+            {
+                "Sort by name",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray { new OpenApiString("name:asc"), new OpenApiString("name:desc") }
+                }
+            },
+            {
+                "Sort by sort order",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray
+                    {
+                        new OpenApiString("sortOrder:asc"), new OpenApiString("sortOrder:desc")
+                    }
+                }
+            },
+            {
+                "Sort by update date",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray
+                    {
+                        new OpenApiString("updateDate:asc"), new OpenApiString("updateDate:desc")
+                    }
+                }
+            }
         };
 }

src/Umbraco.Cms.Api.Delivery/Filters/SwaggerDocumentationFilterBase.cs

@@ -1,7 +1,7 @@
 using Microsoft.AspNetCore.Mvc;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Any;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
-using Umbraco.Cms.Core;
 
 namespace Umbraco.Cms.Api.Delivery.Filters;
 
@@ -9,8 +9,6 @@ internal abstract class SwaggerDocumentationFilterBase<TBaseController>
     : SwaggerFilterBase<TBaseController>, IOperationFilter, IParameterFilter
     where TBaseController : Controller
 {
-    protected abstract string DocumentationLink { get; }
-
     public void Apply(OpenApiOperation operation, OperationFilterContext context)
     {
         if (CanApply(context))
@@ -19,19 +17,21 @@ internal abstract class SwaggerDocumentationFilterBase<TBaseController>
         }
     }
 
-    public void Apply(IOpenApiParameter parameter, ParameterFilterContext context)
+    public void Apply(OpenApiParameter parameter, ParameterFilterContext context)
     {
-        if (CanApply(context) && parameter is OpenApiParameter openApiParameter)
+        if (CanApply(context))
         {
-            ApplyParameter(openApiParameter, context);
+            ApplyParameter(parameter, context);
         }
     }
 
+    protected abstract string DocumentationLink { get; }
+
     protected abstract void ApplyOperation(OpenApiOperation operation, OperationFilterContext context);
 
     protected abstract void ApplyParameter(OpenApiParameter parameter, ParameterFilterContext context);
 
-    protected void AddQueryParameterDocumentation(OpenApiParameter parameter, Dictionary<string, IOpenApiExample> examples, string description)
+    protected void AddQueryParameterDocumentation(OpenApiParameter parameter, Dictionary<string, OpenApiExample> examples, string description)
     {
         parameter.Description = QueryParameterDescription(description);
         parameter.Examples = examples;
@@ -60,19 +60,15 @@ internal abstract class SwaggerDocumentationFilterBase<TBaseController>
         AddFields(operation);
     }
 
-    protected void AddApiKey(OpenApiOperation operation)
-    {
-        operation.Parameters ??= new List<IOpenApiParameter>();
-        operation.Parameters.Add(
-            new OpenApiParameter
-            {
-                Name = Constants.DeliveryApi.HeaderNames.ApiKey,
-                In = ParameterLocation.Header,
-                Required = false,
-                Description = "API key specified through configuration to authorize access to the API.",
-                Schema = new OpenApiSchema { Type = JsonSchemaType.String },
-            });
-    }
+    protected void AddApiKey(OpenApiOperation operation) =>
+        operation.Parameters.Add(new OpenApiParameter
+        {
+            Name = Core.Constants.DeliveryApi.HeaderNames.ApiKey,
+            In = ParameterLocation.Header,
+            Required = false,
+            Description = "API key specified through configuration to authorize access to the API.",
+            Schema = new OpenApiSchema { Type = "string" }
+        });
 
     protected string PaginationDescription(bool skip, string itemType)
         => $"Specifies the number of found {itemType} items to {(skip ? "skip" : "take")}. Use this to control pagination of the response.";
@@ -86,70 +82,78 @@ internal abstract class SwaggerDocumentationFilterBase<TBaseController>
 
     // FIXME: remove this when Delivery API V1 has been removed (expectedly in V15)
     private void AddExpandV1(OpenApiOperation operation)
-    {
-        operation.Parameters ??= new List<IOpenApiParameter>();
-        operation.Parameters.Add(
-            new OpenApiParameter
+        => operation.Parameters.Add(new OpenApiParameter
+        {
+            Name = "expand",
+            In = ParameterLocation.Query,
+            Required = false,
+            Description = QueryParameterDescription("Defines the properties that should be expanded in the response"),
+            Schema = new OpenApiSchema { Type = "string" },
+            Examples = new Dictionary<string, OpenApiExample>
             {
-                Name = "expand",
-                In = ParameterLocation.Query,
-                Required = false,
-                Description =
-                    QueryParameterDescription("Defines the properties that should be expanded in the response"),
-                Schema = new OpenApiSchema { Type = JsonSchemaType.String },
-                Examples = new Dictionary<string, IOpenApiExample>
+                { "Expand none", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+                { "Expand all", new OpenApiExample { Value = new OpenApiString("all") } },
                 {
-                    { "Expand none", new OpenApiExample { Value = string.Empty } },
-                    { "Expand all", new OpenApiExample { Value = "all" } },
-                    { "Expand specific property", new OpenApiExample { Value = "property:alias1" } },
-                    { "Expand specific properties", new OpenApiExample { Value = "property:alias1,alias2" } },
+                    "Expand specific property",
+                    new OpenApiExample { Value = new OpenApiString("property:alias1") }
                 },
-            });
-    }
+                {
+                    "Expand specific properties",
+                    new OpenApiExample { Value = new OpenApiString("property:alias1,alias2") }
+                }
+            }
+        });
 
     private void AddExpand(OpenApiOperation operation)
-    {
-        operation.Parameters ??= new List<IOpenApiParameter>();
-        operation.Parameters.Add(
-            new OpenApiParameter
+        => operation.Parameters.Add(new OpenApiParameter
+        {
+            Name = "expand",
+            In = ParameterLocation.Query,
+            Required = false,
+            Description = QueryParameterDescription("Defines the properties that should be expanded in the response"),
+            Schema = new OpenApiSchema { Type = "string" },
+            Examples = new Dictionary<string, OpenApiExample>
             {
-                Name = "expand",
-                In = ParameterLocation.Query,
-                Required = false,
-                Description =
-                    QueryParameterDescription("Defines the properties that should be expanded in the response"),
-                Schema = new OpenApiSchema { Type = JsonSchemaType.String },
-                Examples = new Dictionary<string, IOpenApiExample>
+                { "Expand none", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+                { "Expand all properties", new OpenApiExample { Value = new OpenApiString("properties[$all]") } },
                 {
-                    { "Expand none", new OpenApiExample { Value = string.Empty } },
-                    { "Expand all properties", new OpenApiExample { Value = "properties[$all]" } },
-                    { "Expand specific property", new OpenApiExample { Value = "properties[alias1]" } },
-                    { "Expand specific properties", new OpenApiExample { Value = "properties[alias1,alias2]" } },
-                    { "Expand nested properties", new OpenApiExample { Value = "properties[alias1[properties[nestedAlias1,nestedAlias2]]]" } },
+                    "Expand specific property",
+                    new OpenApiExample { Value = new OpenApiString("properties[alias1]") }
                 },
-            });
-    }
+                {
+                    "Expand specific properties",
+                    new OpenApiExample { Value = new OpenApiString("properties[alias1,alias2]") }
+                },
+                {
+                    "Expand nested properties",
+                    new OpenApiExample { Value = new OpenApiString("properties[alias1[properties[nestedAlias1,nestedAlias2]]]") }
+                }
+            }
+        });
 
     private void AddFields(OpenApiOperation operation)
-    {
-        operation.Parameters ??= new List<IOpenApiParameter>();
-        operation.Parameters.Add(
-            new OpenApiParameter
+        => operation.Parameters.Add(new OpenApiParameter
+        {
+            Name = "fields",
+            In = ParameterLocation.Query,
+            Required = false,
+            Description = QueryParameterDescription("Explicitly defines which properties should be included in the response (by default all properties are included)"),
+            Schema = new OpenApiSchema { Type = "string" },
+            Examples = new Dictionary<string, OpenApiExample>
             {
-                Name = "fields",
-                In = ParameterLocation.Query,
-                Required = false,
-                Description =
-                    QueryParameterDescription(
-                        "Explicitly defines which properties should be included in the response (by default all properties are included)"),
-                Schema = new OpenApiSchema { Type = JsonSchemaType.String },
-                Examples = new Dictionary<string, IOpenApiExample>
+                { "Include all properties", new OpenApiExample { Value = new OpenApiString("properties[$all]") } },
                 {
-                    { "Include all properties", new OpenApiExample { Value = "properties[$all]" } },
-                    { "Include only specific property", new OpenApiExample { Value = "properties[alias1]" } },
-                    { "Include only specific properties", new OpenApiExample { Value = "properties[alias1,alias2]" } },
-                    { "Include only specific nested properties", new OpenApiExample { Value = "properties[alias1[properties[nestedAlias1,nestedAlias2]]]" } },
+                    "Include only specific property",
+                    new OpenApiExample { Value = new OpenApiString("properties[alias1]") }
                 },
-            });
-    }
+                {
+                    "Include only specific properties",
+                    new OpenApiExample { Value = new OpenApiString("properties[alias1,alias2]") }
+                },
+                {
+                    "Include only specific nested properties",
+                    new OpenApiExample { Value = new OpenApiString("properties[alias1[properties[nestedAlias1,nestedAlias2]]]") }
+                }
+            }
+        });
 }

src/Umbraco.Cms.Api.Delivery/Filters/SwaggerMediaDocumentationFilter.cs

@@ -1,7 +1,8 @@
-using System.Text.Json.Nodes;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Any;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using Umbraco.Cms.Api.Delivery.Configuration;
+using Umbraco.Cms.Api.Delivery.Controllers;
 using Umbraco.Cms.Api.Delivery.Controllers.Media;
 
 namespace Umbraco.Cms.Api.Delivery.Filters;
@@ -12,7 +13,7 @@ internal sealed class SwaggerMediaDocumentationFilter : SwaggerDocumentationFilt
 
     protected override void ApplyOperation(OpenApiOperation operation, OperationFilterContext context)
     {
-        operation.Parameters ??= new List<IOpenApiParameter>();
+        operation.Parameters ??= new List<OpenApiParameter>();
 
         AddExpand(operation, context);
 
@@ -45,29 +46,77 @@ internal sealed class SwaggerMediaDocumentationFilter : SwaggerDocumentationFilt
         }
     }
 
-    private Dictionary<string, IOpenApiExample> FetchQueryParameterExamples() =>
+    private Dictionary<string, OpenApiExample> FetchQueryParameterExamples() =>
         new()
         {
-            { "Select all children at root level", new OpenApiExample { Value = "children:/" } },
-            { "Select all children of a media item by id", new OpenApiExample { Value = "children:id" } },
-            { "Select all children of a media item by path", new OpenApiExample { Value = "children:path" } },
+            {
+                "Select all children at root level",
+                new OpenApiExample { Value = new OpenApiString("children:/") }
+            },
+            {
+                "Select all children of a media item by id",
+                new OpenApiExample { Value = new OpenApiString("children:id") }
+            },
+            {
+                "Select all children of a media item by path",
+                new OpenApiExample { Value = new OpenApiString("children:path") }
+            }
         };
 
-    private Dictionary<string, IOpenApiExample> FilterQueryParameterExamples() =>
+    private Dictionary<string, OpenApiExample> FilterQueryParameterExamples() =>
         new()
         {
-            { "Default filter", new OpenApiExample { Value = string.Empty } },
-            { "Filter by media type", new OpenApiExample { Value = new JsonArray { "mediaType:alias1" } } },
-            { "Filter by name", new OpenApiExample { Value = new JsonArray { "name:nodeName" } } },
+            { "Default filter", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+            {
+                "Filter by media type",
+                new OpenApiExample { Value = new OpenApiArray { new OpenApiString("mediaType:alias1") } }
+            },
+            {
+                "Filter by name",
+                new OpenApiExample { Value = new OpenApiArray { new OpenApiString("name:nodeName") } }
+            }
         };
 
-    private Dictionary<string, IOpenApiExample> SortQueryParameterExamples() =>
+    private Dictionary<string, OpenApiExample> SortQueryParameterExamples() =>
         new()
         {
-            { "Default sort", new OpenApiExample { Value = string.Empty } },
-            { "Sort by create date", new OpenApiExample { Value = new JsonArray { "createDate:asc", "createDate:desc" } } },
-            { "Sort by name", new OpenApiExample { Value = new JsonArray { "name:asc", "name:desc" } } },
-            { "Sort by sort order", new OpenApiExample { Value = new JsonArray { "sortOrder:asc", "sortOrder:desc" } } },
-            { "Sort by update date", new OpenApiExample { Value = new JsonArray { "updateDate:asc", "updateDate:desc" } } },
+            { "Default sort", new OpenApiExample { Value = new OpenApiString(string.Empty) } },
+            {
+                "Sort by create date",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray
+                    {
+                        new OpenApiString("createDate:asc"), new OpenApiString("createDate:desc")
+                    }
+                }
+            },
+            {
+                "Sort by name",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray { new OpenApiString("name:asc"), new OpenApiString("name:desc") }
+                }
+            },
+            {
+                "Sort by sort order",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray
+                    {
+                        new OpenApiString("sortOrder:asc"), new OpenApiString("sortOrder:desc")
+                    }
+                }
+            },
+            {
+                "Sort by update date",
+                new OpenApiExample
+                {
+                    Value = new OpenApiArray
+                    {
+                        new OpenApiString("updateDate:asc"), new OpenApiString("updateDate:desc")
+                    }
+                }
+            }
         };
 }

src/Umbraco.Cms.Api.Delivery/Querying/QueryOptionBase.cs

@@ -1,5 +1,8 @@
+using Microsoft.Extensions.DependencyInjection;
 using Umbraco.Cms.Core.DeliveryApi;
+using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Models.PublishedContent;
+using Umbraco.Cms.Core.PublishedCache;
 using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Api.Delivery.Querying;
@@ -11,6 +14,30 @@ public abstract class QueryOptionBase
     private readonly IApiDocumentUrlService _apiDocumentUrlService;
     private readonly IVariationContextAccessor _variationContextAccessor;
 
+    [Obsolete("Please use the non-obsolete constructor. Will be removed in V17.")]
+    public QueryOptionBase(
+        IPublishedContentCache publishedContentCache,
+        IRequestRoutingService requestRoutingService)
+        : this(
+            requestRoutingService,
+            StaticServiceProvider.Instance.GetRequiredService<IRequestPreviewService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IApiDocumentUrlService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IVariationContextAccessor>())
+    {
+    }
+
+    [Obsolete("Please use the non-obsolete constructor. Will be removed in V17.")]
+    public QueryOptionBase(
+        IPublishedContentCache publishedContentCache,
+        IRequestRoutingService requestRoutingService,
+        IRequestPreviewService requestPreviewService,
+        IRequestCultureService requestCultureService,
+        IApiDocumentUrlService apiDocumentUrlService,
+        IVariationContextAccessor variationContextAccessor)
+        : this(requestRoutingService, requestPreviewService, apiDocumentUrlService, variationContextAccessor)
+    {
+    }
+
     public QueryOptionBase(
         IRequestRoutingService requestRoutingService,
         IRequestPreviewService requestPreviewService,

src/Umbraco.Cms.Api.Delivery/Querying/Selectors/AncestorsSelector.cs

@@ -1,6 +1,9 @@
+using Microsoft.Extensions.DependencyInjection;
 using Umbraco.Cms.Api.Delivery.Indexing.Selectors;
 using Umbraco.Cms.Core.DeliveryApi;
+using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Models.PublishedContent;
+using Umbraco.Cms.Core.PublishedCache;
 using Umbraco.Cms.Core.Services.Navigation;
 
 namespace Umbraco.Cms.Api.Delivery.Querying.Selectors;
@@ -10,6 +13,46 @@ public sealed class AncestorsSelector : QueryOptionBase, ISelectorHandler
     private readonly IDocumentNavigationQueryService _navigationQueryService;
     private const string AncestorsSpecifier = "ancestors:";
 
+    [Obsolete("Please use the non-obsolete constructor. Will be removed in V17.")]
+    public AncestorsSelector(
+        IPublishedContentCache publishedContentCache,
+        IRequestRoutingService requestRoutingService,
+        IDocumentNavigationQueryService navigationQueryService,
+        IRequestPreviewService requestPreviewService)
+        : this(
+            requestRoutingService,
+            requestPreviewService,
+            StaticServiceProvider.Instance.GetRequiredService<IApiDocumentUrlService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IVariationContextAccessor>(),
+            navigationQueryService)
+    {
+    }
+
+    [Obsolete("Please use the non-obsolete constructor. Will be removed in V17.")]
+    public AncestorsSelector(
+        IPublishedContentCache publishedContentCache,
+        IRequestRoutingService requestRoutingService,
+        IDocumentNavigationQueryService navigationQueryService)
+        : this(
+            requestRoutingService,
+            StaticServiceProvider.Instance.GetRequiredService<IRequestPreviewService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IApiDocumentUrlService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IVariationContextAccessor>(),
+            navigationQueryService)
+    {
+    }
+
+    [Obsolete("Use the constructor that takes all parameters. Scheduled for removal in V17.")]
+    public AncestorsSelector(IPublishedContentCache publishedContentCache, IRequestRoutingService requestRoutingService)
+        : this(
+            requestRoutingService,
+            StaticServiceProvider.Instance.GetRequiredService<IRequestPreviewService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IApiDocumentUrlService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IVariationContextAccessor>(),
+            StaticServiceProvider.Instance.GetRequiredService<IDocumentNavigationQueryService>())
+    {
+    }
+
     public AncestorsSelector(
         IRequestRoutingService requestRoutingService,
         IRequestPreviewService requestPreviewService,
@@ -19,6 +62,18 @@ public sealed class AncestorsSelector : QueryOptionBase, ISelectorHandler
         : base(requestRoutingService, requestPreviewService, apiDocumentUrlService, variationContextAccessor)
         => _navigationQueryService = navigationQueryService;
 
+    [Obsolete("Use the constructor that takes all parameters. Scheduled for removal in V17.")]
+    public AncestorsSelector(
+        IRequestRoutingService requestRoutingService,
+        IPublishedContentCache publishedContentCache,
+        IRequestPreviewService requestPreviewService,
+        IApiDocumentUrlService apiDocumentUrlService,
+        IVariationContextAccessor variationContextAccessor,
+        IDocumentNavigationQueryService navigationQueryService)
+        : this(requestRoutingService, requestPreviewService, apiDocumentUrlService, variationContextAccessor, navigationQueryService)
+    {
+    }
+
     /// <inheritdoc />
     public bool CanHandle(string query)
         => query.StartsWith(AncestorsSpecifier, StringComparison.OrdinalIgnoreCase);

src/Umbraco.Cms.Api.Delivery/Querying/Selectors/ChildrenSelector.cs

@@ -12,6 +12,27 @@ public sealed class ChildrenSelector : QueryOptionBase, ISelectorHandler
 {
     private const string ChildrenSpecifier = "children:";
 
+    [Obsolete("Please use the non-obsolete constructor. Will be removed in V17.")]
+    public ChildrenSelector(IPublishedContentCache publishedContentCache, IRequestRoutingService requestRoutingService)
+        : this(
+            requestRoutingService,
+            StaticServiceProvider.Instance.GetRequiredService<IRequestPreviewService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IApiDocumentUrlService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IVariationContextAccessor>())
+    {
+    }
+
+    [Obsolete("Please use the non-obsolete constructor. Will be removed in V17.")]
+    public ChildrenSelector(
+        IPublishedContentCache publishedContentCache,
+        IRequestRoutingService requestRoutingService,
+        IRequestPreviewService requestPreviewService,
+        IApiDocumentUrlService apiDocumentUrlService,
+        IVariationContextAccessor variationContextAccessor)
+        : this(requestRoutingService, requestPreviewService, apiDocumentUrlService, variationContextAccessor)
+    {
+    }
+
     public ChildrenSelector(
         IRequestRoutingService requestRoutingService,
         IRequestPreviewService requestPreviewService,

src/Umbraco.Cms.Api.Delivery/Querying/Selectors/DescendantsSelector.cs

@@ -12,6 +12,27 @@ public sealed class DescendantsSelector : QueryOptionBase, ISelectorHandler
 {
     private const string DescendantsSpecifier = "descendants:";
 
+    [Obsolete("Please use the non-obsolete constructor. Will be removed in V17.")]
+    public DescendantsSelector(IPublishedContentCache publishedContentCache, IRequestRoutingService requestRoutingService)
+        : this(
+            requestRoutingService,
+            StaticServiceProvider.Instance.GetRequiredService<IRequestPreviewService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IApiDocumentUrlService>(),
+            StaticServiceProvider.Instance.GetRequiredService<IVariationContextAccessor>())
+    {
+    }
+
+    [Obsolete("Please use the non-obsolete constructor. Will be removed in V17.")]
+    public DescendantsSelector(
+        IPublishedContentCache publishedContentCache,
+        IRequestRoutingService requestRoutingService,
+        IRequestPreviewService requestPreviewService,
+        IApiDocumentUrlService apiDocumentUrlService,
+        IVariationContextAccessor variationContextAccessor)
+        : this(requestRoutingService, requestPreviewService, apiDocumentUrlService, variationContextAccessor)
+    {
+    }
+
     public DescendantsSelector(
         IRequestRoutingService requestRoutingService,
         IRequestPreviewService requestPreviewService,

src/Umbraco.Cms.Api.Delivery/Routing/DeliveryApiItemsEndpointsMatcherPolicy.cs

@@ -66,14 +66,9 @@ internal sealed class DeliveryApiItemsEndpointsMatcherPolicy : MatcherPolicy, IE
     {
         ApiVersion[]? supportedApiVersions = endpoint.Metadata.GetMetadata<MapToApiVersionAttribute>()?.Versions.ToArray();
 
-        // If the endpoint is versioned, the requested API version must be among the API versions supported by the endpoint.
-        // If the endpoint is NOT versioned, it cannot be used with a requested API version.
-        if (supportedApiVersions is not null && requestedApiVersion is not null)
-        {
-            return supportedApiVersions.Contains(requestedApiVersion);
-        }
-
-        return requestedApiVersion is null;
+        // if the endpoint is versioned, the requested API version must be among the API versions supported by the endpoint.
+        // if the endpoint is NOT versioned, it cannot be used with a requested API version
+        return supportedApiVersions?.Contains(requestedApiVersion) ?? requestedApiVersion is null;
     }
 
     private static bool IsByIdsController(ControllerActionDescriptor? controllerActionDescriptor)

src/Umbraco.Cms.Api.Delivery/Services/ApiMediaQueryService.cs

@@ -66,7 +66,7 @@ internal sealed class ApiMediaQueryService : IApiMediaQueryService
     private IPublishedContent? TryGetByPath(string path, IPublishedMediaCache mediaCache)
     {
         var segments = path.Split(Constants.CharArrays.ForwardSlash, StringSplitOptions.RemoveEmptyEntries);
-        IEnumerable<IPublishedContent> currentChildren = GetRootContent(mediaCache);
+        IEnumerable<IPublishedContent> currentChildren = mediaCache.GetAtRoot();
         IPublishedContent? resolvedMedia = null;
 
         foreach (var segment in segments)
@@ -103,7 +103,7 @@ internal sealed class ApiMediaQueryService : IApiMediaQueryService
         IPublishedMediaCache mediaCache = GetRequiredPublishedMediaCache();
         if (childrenOf.Trim(Constants.CharArrays.ForwardSlash).Length == 0)
         {
-            return GetRootContent(mediaCache);
+            return mediaCache.GetAtRoot();
         }
 
         IPublishedContent? parent = Guid.TryParse(childrenOf, out Guid parentKey)
@@ -196,8 +196,4 @@ internal sealed class ApiMediaQueryService : IApiMediaQueryService
 
         return Attempt.SucceedWithStatus(ApiMediaQueryOperationStatus.Success, result);
     }
-
-    private IEnumerable<IPublishedContent> GetRootContent(IPublishedMediaCache mediaCache)
-        => _mediaNavigationQueryService.TryGetRootKeys(out IEnumerable<Guid> rootKeys) is false ? []
-            : rootKeys.Select(x => mediaCache.GetById(false, x)).WhereNotNull();
 }

src/Umbraco.Cms.Api.Delivery/Services/RequestCultureService.cs

@@ -19,6 +19,12 @@ internal sealed partial class RequestCultureService : RequestHeaderHandler, IReq
         return ValidLanguageHeaderRegex().IsMatch(acceptLanguage) ? acceptLanguage : null;
     }
 
+    [Obsolete("Use IVariationContextAccessor to manipulate the variation context. Scheduled for removal in V17.")]
+    public void SetRequestCulture(string culture)
+    {
+        // no-op
+    }
+
     // at the time of writing we're introducing this to get rid of accept-language header values like "en-GB,en-US;q=0.9,en;q=0.8",
     // so we don't want to be too restrictive in this regex - keep it simple for now.
     [GeneratedRegex(@"^[\w-]*$")]

src/Umbraco.Cms.Api.Delivery/Umbraco.Cms.Api.Delivery.csproj

@@ -3,26 +3,19 @@
     <Title>Umbraco CMS - Delivery API</Title>
     <Description>Contains the presentation layer for the Umbraco CMS Delivery API.</Description>
   </PropertyGroup>
-
   <PropertyGroup>
     <!--
       TODO: Fix and remove overrides:
+      [ASP0019] use IHeaderDictionary.Append or the indexer to append or set headers
       [CS0618/CS0612] update obsolete references
     -->
-    <WarningsNotAsErrors>$(WarningsNotAsErrors),CS0618,CS0612</WarningsNotAsErrors>
+    <WarningsNotAsErrors>$(WarningsNotAsErrors),ASP0019,CS0618,CS0612</WarningsNotAsErrors>
   </PropertyGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\Umbraco.Cms.Api.Common\Umbraco.Cms.Api.Common.csproj" />
     <ProjectReference Include="..\Umbraco.Web.Common\Umbraco.Web.Common.csproj" />
   </ItemGroup>
 
-  <ItemGroup>
-    <PackageReference Include="System.Linq.Async">
-      <ExcludeAssets>compile</ExcludeAssets>
-    </PackageReference>
-  </ItemGroup>
-
   <ItemGroup>
     <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
       <_Parameter1>Umbraco.Tests.UnitTests</_Parameter1>

src/Umbraco.Cms.Api.Management/CLAUDE.md

@@ -1,621 +0,0 @@
-# Umbraco CMS - Management API
-
-RESTful API for Umbraco backoffice operations. Manages content, media, users, and system configuration through OpenAPI-documented endpoints.
-
-**Project**: `Umbraco.Cms.Api.Management`
-**Type**: ASP.NET Core Web API Library
-**Files**: 1,317 C# files across 54+ controller domains
-
----
-
-## 1. Architecture
-
-### Target Framework
-- **.NET 10.0** (`net10.0`)
-- **C# 12** with nullable reference types enabled
-- **ASP.NET Core** Web API
-
-### Application Type
-**REST API Library** - Plugged into Umbraco.Web.UI, provides the Management API surface for backoffice operations.
-
-### Key Technologies
-- **Web Framework**: ASP.NET Core MVC with `Asp.Versioning.Mvc` (v1.0 currently)
-- **OpenAPI**: Swashbuckle.AspNetCore with custom schema/operation filters
-- **Authentication**: OpenIddict via `Umbraco.Cms.Api.Common` (reference tokens, not JWT)
-- **Authorization**: Policy-based with `IAuthorizationService`
-- **Validation**: FluentValidation via base controllers
-- **Serialization**: System.Text.Json with custom converters
-- **Mapping**: Manual presentation factories (no AutoMapper)
-- **Patching**: JsonPatch.Net for PATCH operations
-- **Real-time**: SignalR hubs (`BackofficeHub`, `ServerEventHub`)
-- **DI**: Microsoft.Extensions.DependencyInjection via `ManagementApiComposer`
-
-### Project Structure
-```
-src/Umbraco.Cms.Api.Management/
-├── Controllers/                   # 54+ domain-specific controller folders
-│   ├── Document/                  # Document (content) CRUD + publish/unpublish
-│   ├── Media/                     # Media CRUD + upload
-│   ├── Member/                    # Member management
-│   ├── User/                      # User management
-│   ├── DataType/                  # Data type configuration
-│   ├── DocumentType/              # Content type schemas
-│   ├── Template/                  # Razor template management
-│   ├── Dictionary/                # Localization dictionary
-│   ├── Language/                  # Language/culture config
-│   ├── Security/                  # Auth, login, external logins
-│   ├── Install/                   # Installation wizard
-│   ├── Upgrade/                   # Upgrade operations
-│   ├── LogViewer/                 # Log browsing
-│   ├── HealthCheck/               # Health check dashboard
-│   ├── Webhook/                   # Webhook management
-│   └── [48 more domains...]
-│
-├── ViewModels/                    # Request/response DTOs (one folder per domain)
-├── Factories/                     # Domain model → ViewModel converters
-├── Services/                      # Business logic (thin layer over Core.Services)
-├── Mapping/                       # ViewModel → domain model mappers
-├── Security/                      # Auth providers, sign-in manager, external logins
-├── OpenApi/                       # Swashbuckle filters (schema, operation, security)
-├── Routing/                       # Route configuration, SignalR hubs
-├── DependencyInjection/           # Service registration (55+ files)
-├── Middleware/                    # Preview, server events
-├── Configuration/                 # IOptions configurators
-├── Filters/                       # Action filters
-├── Serialization/                 # JSON converters
-└── OpenApi.json                   # Embedded OpenAPI spec (1.3MB)
-```
-
-### Dependencies
-- **Umbraco.Cms.Api.Common** - Shared API infrastructure (base controllers, OpenAPI config)
-- **Umbraco.Infrastructure** - Service implementations, data access
-- **Umbraco.PublishedCache.HybridCache** - Published content queries
-- **JsonPatch.Net** - JSON Patch (RFC 6902) support
-- **Swashbuckle.AspNetCore** - OpenAPI generation
-
-### Design Patterns
-1. **Controller-per-Operation** - Each endpoint is a separate controller class
-   - Example: `CreateDocumentController`, `UpdateDocumentController`, `DeleteDocumentController`
-   - Enables fine-grained authorization and operation-specific logic
-   - **Responsibilities**: entrypoint/routing, authorization and mapping
-   - **avoid**: business logic directly in controllers (there are a few known violations)
-
-2. **Presentation Factory Pattern** - Factories convert domain models to ViewModels
-   - Example: `IDocumentEditingPresentationFactory` (src/Umbraco.Cms.Api.Management/Factories/)
-   - Separation: Controllers → Factories → ViewModels
-
-3. **Attempt Pattern** - Operations return `Attempt<TResult, TStatus>` for status-based error handling
-   - Controllers map status enums to HTTP status codes via helper methods
-
-4. **Authorization Service Pattern** - All authorization via `IAuthorizationService`, not attributes
-   - Checked in base controller methods (see `ManagementApiControllerBase`)
-
-5. **Options Pattern** - All configuration via `IOptions<T>` (security, routing, OpenAPI)
-
-6. **SignalR Event Broadcasting** - Real-time notifications via `BackofficeHub` and `ServerEventHub`
-
----
-
-## 2. Commands
-
-### Build & Run
-```bash
-# Build
-dotnet build src/Umbraco.Cms.Api.Management
-
-# Test (tests in ../../tests/Umbraco.Tests.Integration and Umbraco.Tests.UnitTests)
-dotnet test --filter "FullyQualifiedName~Management"
-
-# Pack (for NuGet distribution)
-dotnet pack src/Umbraco.Cms.Api.Management -c Release
-```
-
-### Code Quality
-```bash
-# Format code
-dotnet format src/Umbraco.Cms.Api.Management
-
-# Build with warnings (note: some warnings suppressed, see .csproj line 23)
-dotnet build src/Umbraco.Cms.Api.Management /p:TreatWarningsAsErrors=true
-```
-
-### OpenAPI Documentation
-The project embeds a pre-generated `OpenApi.json` (1.3MB). To regenerate:
-```bash
-# Run Umbraco.Web.UI, access /umbraco/swagger
-# Export JSON from Swagger UI
-```
-
-### Package Management
-```bash
-# Add package (versions centralized in Directory.Packages.props)
-dotnet add src/Umbraco.Cms.Api.Management package [PackageName]
-
-# Check for vulnerable packages
-dotnet list src/Umbraco.Cms.Api.Management package --vulnerable
-```
-
-### Environment Setup
-1. **Prerequisites**: .NET 10 SDK
-2. **IDE**: Visual Studio 2022 or Rider (with .editorconfig support)
-3. **Configuration**: Inherits from `Umbraco.Web.UI` appsettings (no app settings in this library)
-
----
-
-## 3. Style Guide
-
-### Project-Specific Patterns
-
-**Controller Naming** (line examples from CreateDocumentController.cs:16):
-```csharp
-[ApiVersion("1.0")]
-public class CreateDocumentController : CreateDocumentControllerBase
-```
-- Pattern: `{Verb}{Entity}Controller` (e.g., `CreateDocumentController`, `UpdateMediaController`)
-- Base class: `{Verb}{Entity}ControllerBase` for shared logic
-- **Critical**: One operation per controller (not one controller per resource)
-
-**Async Naming** - All async methods use `Async` suffix consistently:
-```csharp
-await _contentEditingService.CreateAsync(model, CurrentUserKey(_backOfficeSecurityAccessor));
-```
-
-**Factory Pattern Usage** (line 44):
-```csharp
-ContentCreateModel model = _documentEditingPresentationFactory.MapCreateModel(requestModel);
-```
-- ViewModels → Domain: `Map{Operation}Model(requestModel)`
-- Domain → ViewModels: Factory classes in `Factories/` folder
-
-### Key Patterns from Codebase
-
-**ControllerBase Helper Methods** (inherited from `ManagementApiControllerBase` in Api.Common):
-- `CreatedAtId<TController>(expression, id)` - Returns 201 with Location header
-- `ContentEditingOperationStatusResult(status)` - Maps status enum to ProblemDetails
-- `CurrentUserKey(accessor)` - Gets current user from security context
-
-**Authorization Pattern** (all controllers):
-```csharp
-private readonly IAuthorizationService _authorizationService;
-// Check permissions in action, not via [Authorize] attribute
-```
-
----
-
-## 4. Test Bench
-
-### Test Location
-- **Unit Tests**: `tests/Umbraco.Tests.UnitTests/Umbraco.Cms.Api.Management/`
-- **Integration Tests**: `tests/Umbraco.Tests.Integration/Umbraco.Cms.Api.Management/`
-
-### Running Tests
-```bash
-# All Management API tests
-dotnet test --filter "FullyQualifiedName~Management"
-
-# Specific domain (e.g., Document controllers)
-dotnet test --filter "FullyQualifiedName~Management.Controllers.Document"
-```
-
-### Testing Focus
-1. **Controller logic** - Request validation, authorization checks, status code mapping
-2. **Factories** - ViewModel ↔ Domain model conversion accuracy
-3. **Authorization** - Policy enforcement for each operation
-4. **OpenAPI schema** - Ensure Swagger generation doesn't break
-
-### InternalsVisibleTo
-Tests have access to internal types (see .csproj:44-52):
-- `Umbraco.Tests.UnitTests`
-- `Umbraco.Tests.Integration`
-- `DynamicProxyGenAssembly2` (for Moq)
-
----
-
-## 5. Error Handling
-
-### Operation Status Pattern
-Controllers use `Attempt<TResult, TStatus>` with strongly-typed status enums:
-```csharp
-Attempt<ContentCreateResult, ContentEditingOperationStatus> result =
-    await _contentEditingService.CreateAsync(model, userKey);
-
-return result.Success
-    ? CreatedAtId<ByKeyDocumentController>(controller => nameof(controller.ByKey), result.Result.Content!.Key)
-    : ContentEditingOperationStatusResult(result.Status); // Maps to ProblemDetails
-```
-
-**Status Enums** (from Core):
-- `ContentEditingOperationStatus` - InvalidParent, NotFound, NotAllowed, etc.
-- `UserOperationStatus` - UserNameIsNotEmail, DuplicateUserName, etc.
-- Each enum value maps to specific HTTP status + ProblemDetails type
-
-### ProblemDetails
-All errors return RFC 7807 ProblemDetails via helper methods in base controllers:
-- 400 Bad Request: Validation failures, invalid operations
-- 403 Forbidden: Authorization failures
-- 404 Not Found: Resource not found
-- 409 Conflict: Duplicate operations
-
-### Critical Logging Points
-1. **Authorization failures** - Logged by AuthorizationService
-2. **Service operation failures** - Logged in Infrastructure layer services
-3. **External login errors** - BackOfficeSignInManager (Security/)
-
----
-
-## 6. Clean Code
-
-### Key Design Decisions
-
-**Why Controller-per-Operation?** (not RESTful resource-based controllers)
-- Fine-grained authorization per operation
-- Operation-specific request/response models
-- Clearer OpenAPI documentation
-- Example: 20+ controllers in `Controllers/Document/` for different operations
-
-**Why Manual Factories instead of AutoMapper?**
-- Explicit control over mapping logic
-- Easier debugging (no magic)
-- Better performance (no reflection overhead)
-- See `Factories/` directory (92 factory classes)
-
-### Project-Specific Architectural Decisions
-
-**Embedded OpenAPI Spec** (OpenApi.json - 1.3MB):
-- Pre-generated, embedded as resource
-- Served for client SDK generation
-- **Why?** Deterministic output, faster startup (no runtime generation)
-
-**SignalR for Real-time** (Routing/BackofficeHub.cs:33):
-- `BackofficeHub` - User notifications, cache refreshes
-- `ServerEventHub` - Background job updates, health checks
-- Routes: `/umbraco/backoffice-signalr`, `/umbraco/serverevent-signalr`
-
-### Code Smells to Watch For
-
-1. **Large factory classes** - Some factories have 1000+ lines (e.g., `UserGroupPresentationFactory.cs`)
-   - Consider splitting by operation
-
-2. **Repeated authorization checks** - Each controller duplicates auth logic
-   - Already abstracted to base classes, but still verbose
-
-3. **ViewModel explosion** - 1000+ ViewModel classes across ViewModels/ folders
-   - Consider shared base models or composition
-
----
-
-## 7. Security
-
-### Authentication & Authorization
-**Method**: OpenIddict (OAuth 2.0) via Umbraco.Cms.Api.Common
-- Reference tokens (not JWT) stored in database
-- Token validation via OpenIddict middleware
-- ASP.NET Core Data Protection for token encryption
-
-**Authorization**:
-- Basic authorization is done trough policies and the `AuthorizeAttribute`
-```csharp
-// Example from DocumentTreeControllerBase.cs, the user needs at least access to a section that uses trees
-[Authorize(Policy = AuthorizationPolicies.SectionAccessForContentTree)]
-```
-- Authorization that needs (parts of) the payload are done manually trough the IAuthorizationService
-```csharp
-// Example from CreateDocumentController.cs:22
-private readonly IAuthorizationService _authorizationService;
-
-// Authorization checked in base controller methods, not attributes
-protected async Task<IActionResult> HandleRequest(request, Func<Task<IActionResult>> handler)
-{
-    var authResult = await _authorizationService.AuthorizeAsync(User, request, policy);
-    // ...
-}
-```
-
-**Policies** (defined in Security/Authorization/):
-- `ContentPermissionHandler` - Document/Media CRUD permissions
-- `SectionAccessHandler` - Backoffice section access
-- `UserGroupPermissionHandler` - Admin operations
-
-**Password Requirements** (Security/ConfigureBackOfficeIdentityOptions.cs:18):
-- See Identity options configuration
-
-### External Login Providers
-**Location**: `Security/BackOfficeExternalLoginProviders.cs`
-- Google, Microsoft, OpenID Connect providers
-- Auto-linking with `ExternalSignInAutoLinkOptions`
-- **Critical**: Validate external claims before auto-linking users
-
-### Input Validation
-**FluentValidation** used throughout:
-- Request models validated automatically via MVC integration
-- Custom validators in each domain folder (e.g., `ViewModels/Document/Validators/`)
-
-**Parameter Validation**:
-```csharp
-// Controllers validate IDs, keys before service calls
-if (requestModel.Parent == null)
-    return BadRequest(new ProblemDetailsBuilder()...);
-```
-
-### API Security
-**CORS** - Configured in Umbraco.Web.UI (not this project)
-
-**HTTPS Enforcement** - Configured in Umbraco.Web.UI
-
-**Request Size Limits** - Configured for file uploads in Umbraco.Web.UI
-
-**Security Headers** - Handled by Umbraco.Web.UI middleware
-
-### Secrets Management
-**No secrets in this project** - Configuration injected from parent application (Umbraco.Web.UI)
-
-### Dependency Security
-```bash
-# Check vulnerable packages
-dotnet list src/Umbraco.Cms.Api.Management package --vulnerable
-```
-
-### Security Anti-Patterns to Avoid
-1. **Never bypass authorization checks** - All operations must authorize
-2. **Never trust client validation** - Always validate on server
-3. **Never expose stack traces** - ProblemDetails abstracts errors
-4. **Never log sensitive data** - User passwords, tokens, API keys
-
----
-
-## 8. Teamwork and Workflow
-
-**⚠️ SKIPPED** - This is a sub-project. See root `/CLAUDE.md` for repository-wide teamwork protocols.
-
----
-
-## 9. Edge Cases
-
-### Domain-Specific Edge Cases
-
-**Document Operations**:
-1. **Publishing with descendants** - Can timeout on large trees
-   - Use `PublishDocumentWithDescendantsController` with result polling
-   - See `Controllers/Document/PublishDocumentWithDescendantsResultController.cs`
-
-2. **Recycle bin operations** - Items in recycle bin can't be published
-   - Check `IsTrashed` before publish operations
-
-3. **Public access rules** - Affects authorization and routing
-   - See `Controllers/Document/CreatePublicAccessDocumentController.cs`
-
-**Media Upload**:
-1. **Large file uploads** - Request size limits in parent app
-   - Controllers accept multipart/form-data
-   - Temporary files cleaned by background job
-
-2. **Media picker** - Can reference deleted media
-   - Validation in `Factories/` checks for orphaned references
-
-**User Management**:
-1. **External logins** - Auto-linking can create duplicate users if email mismatches
-   - See `Security/ExternalSignInAutoLinkOptions.cs`
-
-2. **User groups** - Deleting user group doesn't delete users
-   - Users reassigned to default group
-
-**Webhooks**:
-1. **Webhook failures** - Failed webhooks retry with exponential backoff
-   - See `Controllers/Webhook/` for configuration
-
-### Known Gotchas (from TODO comments)
-
-**StyleSheet/Script/PartialView Tree Controllers** - All have identical TODO comment:
-```
-TODO: [NL] This must return path segments for a query to work
-// src/Umbraco.Cms.Api.Management/Controllers/Stylesheet/Tree/StylesheetTreeControllerBase.cs
-// src/Umbraco.Cms.Api.Management/Controllers/Script/Tree/ScriptTreeControllerBase.cs
-// src/Umbraco.Cms.Api.Management/Controllers/PartialView/Tree/PartialViewTreeControllerBase.cs
-```
-
-**BackOfficeController** - External login TODO:
-```
-// src/Umbraco.Cms.Api.Management/Controllers/Security/BackOfficeController.cs
-// TODO: Handle external logins properly
-```
-
----
-
-## 10. Agentic Workflow
-
-### When to Add a New Endpoint
-
-**Decision Points**:
-1. Does the operation fit an existing controller domain? (Document, Media, User, etc.)
-2. Is this a new CRUD operation or a custom action?
-3. Does this require new authorization policies?
-
-**Workflow**:
-1. **Create Controller** in appropriate `Controllers/{Domain}/` folder
-   - Follow naming: `{Verb}{Entity}Controller`
-   - Inherit from domain-specific base controller or `ManagementApiControllerBase`
-
-2. **Define ViewModels** in `ViewModels/{Domain}/`
-   - Request model (e.g., `CreateDocumentRequestModel`)
-   - Response model (if not reusing existing)
-
-3. **Create or Update Factory** in `Factories/`
-   - Map request ViewModel → domain model
-   - Map domain result → response ViewModel
-
-4. **Authorization** - Check required permissions in controller action
-   - Use `IAuthorizationService.AuthorizeAsync()`
-
-5. **Service Layer** - Call Core services (from `Umbraco.Core.Services`)
-   - Handle `Attempt<>` results
-   - Map status to HTTP status codes
-
-6. **OpenAPI Annotations**:
-   - `[ApiVersion("1.0")]`
-   - `[MapToApiVersion("1.0")]`
-   - `[ProducesResponseType(...)]` for all status codes
-
-7. **Testing**:
-   - Unit test controller logic
-   - Integration test end-to-end flow
-
-8. **Update OpenApi.json** (if needed for client generation)
-
-### Quality Gates Before PR
-1. All tests pass
-2. Code formatted (`dotnet format`)
-3. No new warnings (check suppressed warnings list in .csproj:23)
-4. OpenAPI schema valid (run Swagger UI)
-5. Authorization tested (unit + integration tests)
-
-### Common Pitfalls
-1. **Forgetting authorization checks** - Every operation must authorize
-2. **Inconsistent status code mapping** - Use base controller helpers
-3. **Large factory classes** - Split by operation if >500 lines
-4. **Missing ProducesResponseType** - Breaks OpenAPI client generation
-5. **Not handling Attempt failures** - Always check `result.Success`
-
----
-
-## 11. Project-Specific Notes
-
-### Key Design Decisions
-
-**Why 1,317 files for one API?**
-- Controller-per-operation pattern = many controllers
-- 54 domains × average 10-20 operations per domain
-- Tradeoff: Verbose but explicit, easier to navigate than megacontrollers
-
-**Why manual factories instead of AutoMapper?**
-- Performance: No reflection overhead
-- Debuggability: Step through mapping logic
-- Control: Complex mappings (e.g., security trimming) require custom logic
-
-**Why embedded OpenApi.json?**
-- Deterministic OpenAPI spec for client generation
-- Faster startup (no runtime generation)
-- Easier versioning (commit changes to spec)
-- Added `OpenAPIContractTest` to test that all operations are exported
-
-### External Integrations
-None directly in this project. All integrations handled by:
-- **Umbraco.Infrastructure** - External search, media, email providers
-- **Umbraco.Core** - External data sources, webhooks
-
-### Known Limitations
-
-1. **API Versioning**: Currently v1.0 and v1.1
-   - Future versions will require new controller classes or action methods
-
-2. **Batch Operations**: Limited batch endpoint support
-   - Most operations are single-entity (create one document at a time)
-
-3. **Real-time Limits**: SignalR hubs don't scale beyond single-server without Redis backplane
-   - Configure Redis for multi-server setups
-
-4. **File Upload Size**: Controlled by parent app (Umbraco.Web.UI)
-   - This project doesn't set limits
-
-### Performance Considerations
-
-**Caching**:
-- Published content cached via `Umbraco.PublishedCache.HybridCache`
-- Controllers query cache, not database (for published content)
-
-**Background Jobs**:
-- Long-running operations (publish with descendants, export) return job ID
-- Poll result endpoint for completion
-- See `Controllers/Document/PublishDocumentWithDescendantsResultController.cs`
-
-**OpenAPI Generation**:
-- Pre-generated (OpenApi.json embedded)
-- Runtime generation disabled for performance
-
-### Technical Debt (Top Issues from TODO comments)
-
-1. **Warnings Suppressed** (Umbraco.Cms.Api.Management.csproj:9-22):
-   ```
-   TODO: Fix and remove overrides:
-   - SA1117: params all on same line
-   - SA1401: make fields private
-   - SA1134: own line attributes
-   - CS0108: hidden inherited member
-   - CS0618/CS9042: update obsolete references
-   - CS1998: remove async or make method synchronous
-   - CS8524: switch statement exhaustiveness
-   - IDE0060: removed unused parameter
-   - SA1649: file name match type
-   - CS0419: ambiguous reference
-   - CS1573: param tag for all parameters
-   - CS1574: unresolveable cref
-   ```
-
-2. **Tree Controller Path Segments** (multiple files):
-   - Stylesheet/Script/PartialView tree controllers need path segment support for queries
-   - Files: `Controllers/Stylesheet/Tree/StylesheetTreeControllerBase.cs`
-   - Files: `Controllers/Script/Tree/ScriptTreeControllerBase.cs`
-   - Files: `Controllers/PartialView/Tree/PartialViewTreeControllerBase.cs`
-
-3. **External Login Handling** (Controllers/Security/BackOfficeController.cs):
-   - TODO: Handle external logins properly
-
-4. **Large Factory Classes** (Factories/UserGroupPresentationFactory.cs):
-   - Some factories exceed 1000 lines - consider splitting
-
-5. **ViewModel Explosion** - 1000+ ViewModel classes
-   - Consider shared base models or composition to reduce duplication
-
----
-
-## Quick Reference
-
-### Essential Commands
-```bash
-# Build
-dotnet build src/Umbraco.Cms.Api.Management
-
-# Test Management API
-dotnet test --filter "FullyQualifiedName~Management"
-
-# Format code
-dotnet format src/Umbraco.Cms.Api.Management
-
-# Pack for NuGet
-dotnet pack src/Umbraco.Cms.Api.Management -c Release
-```
-
-### Key Projects
-- **Umbraco.Cms.Api.Management** (this) - Management API controllers and models
-- **Umbraco.Cms.Api.Common** - Shared API infrastructure, base controllers
-- **Umbraco.Infrastructure** - Service implementations, data access
-- **Umbraco.Core** - Domain models, service interfaces
-
-### Important Files
-- **Project file**: `src/Umbraco.Cms.Api.Management/Umbraco.Cms.Api.Management.csproj`
-- **Composer**: `src/Umbraco.Cms.Api.Management/ManagementApiComposer.cs` (DI entry point)
-- **Routing**: `src/Umbraco.Cms.Api.Management/Routing/BackOfficeAreaRoutes.cs`
-- **OpenAPI Spec**: `src/Umbraco.Cms.Api.Management/OpenApi.json` (embedded, 1.3MB)
-- **Base Controllers**: See `Umbraco.Cms.Api.Common` project
-
-### Configuration
-No appsettings in this library - all configuration from parent app (Umbraco.Web.UI):
-- OpenIddict settings
-- CORS settings
-- File upload limits
-
-### API Endpoints
-Base path: `/umbraco/management/api/v1/`
-
-Examples:
-- `POST /umbraco/management/api/v1/document` - Create document
-- `GET /umbraco/management/api/v1/document/{id}` - Get document by key
-- `PUT /umbraco/management/api/v1/document/{id}` - Update document
-- `DELETE /umbraco/management/api/v1/document/{id}` - Delete document
-
-Full spec: See OpenApi.json or Swagger UI at `/umbraco/swagger`
-
-### Getting Help
-- **Root Documentation**: `/CLAUDE.md` (repository overview)
-- **API Common Docs**: `../Umbraco.Cms.Api.Common/CLAUDE.md` (shared API patterns)
-- **Core Docs**: `../Umbraco.Core/CLAUDE.md` (domain architecture)
-- **Official Docs**: https://docs.umbraco.com/umbraco-cms/reference/management-api

src/Umbraco.Cms.Api.Management/Configuration/ConfigureBackOfficeCookieOptions.cs

@@ -5,7 +5,6 @@ using Microsoft.AspNetCore.DataProtection;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
-using Microsoft.Net.Http.Headers;
 using Umbraco.Cms.Api.Management.Security;
 using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Configuration.Models;
@@ -220,44 +219,10 @@ public class ConfigureBackOfficeCookieOptions : IConfigureNamedOptions<CookieAut
                 }
 
                 return Task.CompletedTask;
-            },
-            // FIXME: We want to change this over to using an attribute on the backoffice controllers
-            // See this for more: https://github.com/dotnet/aspnetcore/issues/63093#issuecomment-3201530217
-            OnRedirectToLogin = context =>
-            {
-                if (IsXhr(context.Request))
-                {
-                    context.Response.Headers.Location = context.RedirectUri;
-                    context.Response.StatusCode = 401;
-                }
-                else
-                {
-                    context.Response.Redirect(context.RedirectUri);
-                }
-
-                return Task.CompletedTask;
-            },
-            OnRedirectToAccessDenied = context =>
-            {
-                if (IsXhr(context.Request))
-                {
-                    context.Response.Headers.Location = context.RedirectUri;
-                    context.Response.StatusCode = 403;
-                }
-                else
-                {
-                    context.Response.Redirect(context.RedirectUri);
-                }
-
-                return Task.CompletedTask;
-            },
+            }
         };
     }
 
-    private bool IsXhr(HttpRequest request) =>
-        string.Equals(request.Query[HeaderNames.XRequestedWith], "XMLHttpRequest", StringComparison.Ordinal) ||
-        string.Equals(request.Headers.XRequestedWith, "XMLHttpRequest", StringComparison.Ordinal);
-
     /// <summary>
     ///     Ensures the ticket is renewed if the <see cref="SecuritySettings.KeepUserLoggedIn" /> is set to true
     ///     and the current request is for the get user seconds endpoint

src/Umbraco.Cms.Api.Management/Configuration/ConfigureUmbracoManagementApiSwaggerGenOptions.cs

@@ -1,8 +1,8 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
-using Microsoft.OpenApi;
+using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
-using Umbraco.Cms.Api.Common.Security;
+using Umbraco.Cms.Api.Common.OpenApi;
 using Umbraco.Cms.Api.Common.Serialization;
 using Umbraco.Cms.Api.Management.DependencyInjection;
 using Umbraco.Cms.Api.Management.OpenApi;
@@ -11,7 +11,7 @@ namespace Umbraco.Cms.Api.Management.Configuration;
 
 public class ConfigureUmbracoManagementApiSwaggerGenOptions : IConfigureOptions<SwaggerGenOptions>
 {
-    private readonly IUmbracoJsonTypeInfoResolver _umbracoJsonTypeInfoResolver;
+    private IUmbracoJsonTypeInfoResolver _umbracoJsonTypeInfoResolver;
 
     public ConfigureUmbracoManagementApiSwaggerGenOptions(IUmbracoJsonTypeInfoResolver umbracoJsonTypeInfoResolver)
     {
@@ -20,6 +20,7 @@ public class ConfigureUmbracoManagementApiSwaggerGenOptions : IConfigureOptions<
 
     public void Configure(SwaggerGenOptions swaggerGenOptions)
     {
+
         swaggerGenOptions.SwaggerDoc(
             ManagementApiConfiguration.ApiName,
             new OpenApiInfo
@@ -50,10 +51,10 @@ public class ConfigureUmbracoManagementApiSwaggerGenOptions : IConfigureOptions<
                      AuthorizationCode = new OpenApiOAuthFlow
                      {
                          AuthorizationUrl =
-                             new Uri(Paths.BackOfficeApi.AuthorizationEndpoint, UriKind.Relative),
-                         TokenUrl = new Uri(Paths.BackOfficeApi.TokenEndpoint, UriKind.Relative),
-                     },
-                 },
+                             new Uri(Common.Security.Paths.BackOfficeApi.AuthorizationEndpoint, UriKind.Relative),
+                         TokenUrl = new Uri(Common.Security.Paths.BackOfficeApi.TokenEndpoint, UriKind.Relative)
+                     }
+                 }
              });
 
         // Sets Security requirement on backoffice apis

src/Umbraco.Cms.Api.Management/Controllers/Content/ContentCollectionControllerBase.cs

@@ -29,6 +29,39 @@ public abstract class ContentCollectionControllerBase<TContent, TCollectionRespo
         _flagProviders = flagProvider;
     }
 
+    [Obsolete("Use the constructer with all parameters. To be removed in Umbraco 18")]
+    protected ContentCollectionControllerBase(IUmbracoMapper mapper)
+        : this(mapper, StaticServiceProvider.Instance.GetRequiredService<FlagProviderCollection>())
+    {
+    }
+
+    [Obsolete("This method is no longer used and will be removed in Umbraco 17.")]
+    protected IActionResult CollectionResult(ListViewPagedModel<TContent> result)
+    {
+        PagedModel<TContent> collectionItemsResult = result.Items;
+        ListViewConfiguration collectionConfiguration = result.ListViewConfiguration;
+
+        var collectionPropertyAliases = collectionConfiguration
+            .IncludeProperties
+            .Select(p => p.Alias)
+            .WhereNotNull()
+            .ToArray();
+
+        List<TCollectionResponseModel> collectionResponseModels =
+            _mapper.MapEnumerable<TContent, TCollectionResponseModel>(collectionItemsResult.Items, context =>
+            {
+                context.SetIncludedProperties(collectionPropertyAliases);
+            });
+
+        var pageViewModel = new PagedViewModel<TCollectionResponseModel>
+        {
+            Items = collectionResponseModels,
+            Total = collectionItemsResult.Total,
+        };
+
+        return Ok(pageViewModel);
+    }
+
     /// <summary>
     /// Creates a collection result from the provided collection response models and total number of items.
     /// </summary>

src/Umbraco.Cms.Api.Management/Controllers/Content/ContentControllerBase.cs

@@ -1,5 +1,7 @@
-using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Umbraco.Cms.Api.Management.ViewModels.Content;
+using Umbraco.Cms.Core.Mapping;
 using Umbraco.Cms.Core.Models.ContentEditing;
 using Umbraco.Cms.Core.Models.ContentEditing.Validation;
 using Umbraco.Cms.Core.PropertyEditors.Validation;
@@ -10,6 +12,7 @@ namespace Umbraco.Cms.Api.Management.Controllers.Content;
 
 public abstract class ContentControllerBase : ManagementApiControllerBase
 {
+
     protected IActionResult ContentEditingOperationStatusResult(ContentEditingOperationStatus status)
         => OperationStatusResult(status, problemDetailsBuilder => status switch
         {
@@ -95,17 +98,6 @@ public abstract class ContentControllerBase : ManagementApiControllerBase
                 .Build()),
         });
 
-    protected IActionResult GetReferencesOperationStatusResult(GetReferencesOperationStatus status)
-        => OperationStatusResult(status, problemDetailsBuilder => status switch
-        {
-            GetReferencesOperationStatus.ContentNotFound => NotFound(problemDetailsBuilder
-                .WithTitle("The requested content could not be found")
-                .Build()),
-            _ => StatusCode(StatusCodes.Status500InternalServerError, problemDetailsBuilder
-                .WithTitle("Unknown get references operation status.")
-                .Build()),
-        });
-
     protected IActionResult ContentEditingOperationStatusResult<TContentModelBase, TValueModel, TVariantModel>(
         ContentEditingOperationStatus status,
         TContentModelBase requestModel,

src/Umbraco.Cms.Api.Management/Controllers/DataType/ReferencesDataTypeController.cs

@@ -0,0 +1,40 @@
+using Asp.Versioning;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Umbraco.Cms.Api.Management.Factories;
+using Umbraco.Cms.Api.Management.ViewModels.DataType;
+using Umbraco.Cms.Core;
+using Umbraco.Cms.Core.Services;
+using Umbraco.Cms.Core.Services.OperationStatus;
+
+namespace Umbraco.Cms.Api.Management.Controllers.DataType;
+
+[ApiVersion("1.0")]
+[Obsolete("Please use ReferencedByDataTypeController and the referenced-by endpoint. Scheduled for removal in Umbraco 17.")]
+public class ReferencesDataTypeController : DataTypeControllerBase
+{
+    private readonly IDataTypeService _dataTypeService;
+    private readonly IDataTypeReferencePresentationFactory _dataTypeReferencePresentationFactory;
+
+    public ReferencesDataTypeController(IDataTypeService dataTypeService, IDataTypeReferencePresentationFactory dataTypeReferencePresentationFactory)
+    {
+        _dataTypeService = dataTypeService;
+        _dataTypeReferencePresentationFactory = dataTypeReferencePresentationFactory;
+    }
+
+    [HttpGet("{id:guid}/references")]
+    [MapToApiVersion("1.0")]
+    [ProducesResponseType(typeof(DataTypeReferenceResponseModel[]), StatusCodes.Status200OK)]
+    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    public async Task<IActionResult> References(CancellationToken cancellationToken, Guid id)
+    {
+        Attempt<IReadOnlyDictionary<Udi, IEnumerable<string>>, DataTypeOperationStatus> result = await _dataTypeService.GetReferencesAsync(id);
+        if (result.Success == false)
+        {
+            return DataTypeOperationStatusResult(result.Status);
+        }
+
+        DataTypeReferenceResponseModel[] viewModels = _dataTypeReferencePresentationFactory.CreateDataTypeReferenceViewModels(result.Result).ToArray();
+        return Ok(viewModels);
+    }
+}

src/Umbraco.Cms.Api.Management/Controllers/Document/ByKeyDocumentController.cs

@@ -2,10 +2,13 @@ using Asp.Versioning;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.DependencyInjection;
 using Umbraco.Cms.Api.Management.Factories;
 using Umbraco.Cms.Api.Management.ViewModels.Document;
 using Umbraco.Cms.Core.Actions;
+using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Security.Authorization;
+using Umbraco.Cms.Core.Services;
 using Umbraco.Cms.Core.Services.Querying;
 using Umbraco.Cms.Web.Common.Authorization;
 using Umbraco.Extensions;
@@ -19,6 +22,31 @@ public class ByKeyDocumentController : DocumentControllerBase
     private readonly IDocumentPresentationFactory _documentPresentationFactory;
     private readonly IContentQueryService _contentQueryService;
 
+    [Obsolete("Scheduled for removal in v17")]
+    public ByKeyDocumentController(
+        IAuthorizationService authorizationService,
+        IContentEditingService contentEditingService,
+        IDocumentPresentationFactory documentPresentationFactory)
+    {
+        _authorizationService = authorizationService;
+        _documentPresentationFactory = documentPresentationFactory;
+        _contentQueryService = StaticServiceProvider.Instance.GetRequiredService<IContentQueryService>();
+    }
+
+    // needed for greedy selection until other constructor remains in v17
+    [Obsolete("Scheduled for removal in v17")]
+    public ByKeyDocumentController(
+        IAuthorizationService authorizationService,
+        IContentEditingService contentEditingService,
+        IDocumentPresentationFactory documentPresentationFactory,
+        IContentQueryService contentQueryService)
+    {
+        _authorizationService = authorizationService;
+        _documentPresentationFactory = documentPresentationFactory;
+        _contentQueryService = contentQueryService;
+    }
+
+    [ActivatorUtilitiesConstructor]
     public ByKeyDocumentController(
         IAuthorizationService authorizationService,
         IDocumentPresentationFactory documentPresentationFactory,

src/Umbraco.Cms.Api.Management/Controllers/Document/Collection/DocumentCollectionControllerBase.cs

@@ -23,6 +23,12 @@ public abstract class DocumentCollectionControllerBase : ContentCollectionContro
     {
     }
 
+    [Obsolete("Please use the constructor with all parameters. Scheduled to be removed in V18")]
+    protected DocumentCollectionControllerBase(IUmbracoMapper mapper)
+        : base(mapper)
+    {
+    }
+
     protected IActionResult CollectionOperationStatusResult(ContentCollectionOperationStatus status)
         => ContentCollectionOperationStatusResult(status, "document");
 }

src/Umbraco.Cms.Api.Management/Controllers/Document/DocumentPreviewUrlController.cs

@@ -1,53 +0,0 @@
-using Asp.Versioning;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc;
-using Umbraco.Cms.Api.Common.Builders;
-using Umbraco.Cms.Api.Management.Factories;
-using Umbraco.Cms.Api.Management.ViewModels.Document;
-using Umbraco.Cms.Core.Models;
-using Umbraco.Cms.Core.Services;
-
-namespace Umbraco.Cms.Api.Management.Controllers.Document;
-
-[ApiVersion("1.0")]
-public class DocumentPreviewUrlController : DocumentControllerBase
-{
-    private readonly IContentService _contentService;
-    private readonly IDocumentUrlFactory _documentUrlFactory;
-
-    public DocumentPreviewUrlController(
-        IContentService contentService,
-        IDocumentUrlFactory documentUrlFactory)
-    {
-        _contentService = contentService;
-        _documentUrlFactory = documentUrlFactory;
-    }
-
-    [MapToApiVersion("1.0")]
-    [HttpGet("{id:guid}/preview-url")]
-    [ProducesResponseType(typeof(DocumentUrlInfo), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> GetPreviewUrl(Guid id, string providerAlias, string? culture, string? segment)
-    {
-        IContent? content = _contentService.GetById(id);
-        if (content is null)
-        {
-            return NotFound(new ProblemDetailsBuilder()
-                .WithTitle("Document not found")
-                .WithDetail("The requested document did not exist.")
-                .Build());
-        }
-
-        DocumentUrlInfo? previewUrlInfo = await _documentUrlFactory.GetPreviewUrlAsync(content, providerAlias, culture, segment);
-        if (previewUrlInfo is null)
-        {
-            return BadRequest(new ProblemDetailsBuilder()
-                .WithTitle("No preview URL for document")
-                .WithDetail("Failed to produce a preview URL for the requested document.")
-                .Build());
-        }
-
-        return Ok(previewUrlInfo);
-    }
-}

src/Umbraco.Cms.Api.Management/Controllers/Document/DomainsController.cs

@@ -1,31 +1,60 @@
-using Asp.Versioning;
+using Asp.Versioning;
+using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.DependencyInjection;
 using Umbraco.Cms.Api.Management.ViewModels.Document;
+using Umbraco.Cms.Core.Actions;
+using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Mapping;
 using Umbraco.Cms.Core.Models;
+using Umbraco.Cms.Core.Security.Authorization;
 using Umbraco.Cms.Core.Services;
+using Umbraco.Cms.Web.Common.Authorization;
+using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Document;
 
 [ApiVersion("1.0")]
 public class DomainsController : DocumentControllerBase
 {
+    private readonly IAuthorizationService _authorizationService;
     private readonly IDomainService _domainService;
     private readonly IUmbracoMapper _umbracoMapper;
 
-    public DomainsController(IDomainService domainService, IUmbracoMapper umbracoMapper)
+    [ActivatorUtilitiesConstructor]
+    public DomainsController(IAuthorizationService authorizationService, IDomainService domainService, IUmbracoMapper umbracoMapper)
     {
+        _authorizationService = authorizationService;
         _domainService = domainService;
         _umbracoMapper = umbracoMapper;
     }
 
+    [Obsolete("Please use the constructor taking all parameters. Scheduled for removal in Umbraco 18.")]
+    public DomainsController(IDomainService domainService, IUmbracoMapper umbracoMapper)
+        : this(
+            StaticServiceProvider.Instance.GetRequiredService<IAuthorizationService>(),
+            domainService,
+            umbracoMapper)
+    {
+    }
+
     [MapToApiVersion("1.0")]
     [HttpGet("{id:guid}/domains")]
     [ProducesResponseType(typeof(DomainsResponseModel), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
     public async Task<IActionResult> Domains(CancellationToken cancellationToken, Guid id)
     {
+        AuthorizationResult authorizationResult = await _authorizationService.AuthorizeResourceAsync(
+            User,
+            ContentPermissionResource.WithKeys(ActionBrowse.ActionLetter, id),
+            AuthorizationPolicies.ContentPermissionByResource);
+
+        if (!authorizationResult.Succeeded)
+        {
+            return Forbidden();
+        }
+
         IDomain[] assignedDomains = (await _domainService.GetAssignedDomainsAsync(id, true))
             .OrderBy(d => d.SortOrder)
             .ToArray();

src/Umbraco.Cms.Api.Management/Controllers/Document/References/ReferencedByDocumentController.cs

@@ -4,10 +4,8 @@ using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Common.ViewModels.Pagination;
 using Umbraco.Cms.Api.Management.Factories;
 using Umbraco.Cms.Api.Management.ViewModels.TrackedReferences;
-using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Services.OperationStatus;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Document.References;
 
@@ -17,16 +15,22 @@ public class ReferencedByDocumentController : DocumentControllerBase
     private readonly ITrackedReferencesService _trackedReferencesService;
     private readonly IRelationTypePresentationFactory _relationTypePresentationFactory;
 
-    public ReferencedByDocumentController(
-        ITrackedReferencesService trackedReferencesService,
-        IRelationTypePresentationFactory relationTypePresentationFactory)
+    public ReferencedByDocumentController(ITrackedReferencesService trackedReferencesService, IRelationTypePresentationFactory relationTypePresentationFactory)
     {
         _trackedReferencesService = trackedReferencesService;
         _relationTypePresentationFactory = relationTypePresentationFactory;
     }
 
-    [Obsolete("Use the ReferencedBy2 action method instead. Scheduled for removal in Umbraco 19, when ReferencedBy2 will be renamed back to ReferencedBy.")]
-    [NonAction]
+    /// <summary>
+    ///     Gets a paged list of tracked references for the current item, so you can see where an item is being used.
+    /// </summary>
+    /// <remarks>
+    ///     Used by info tabs on content, media etc. and for the delete and unpublish of single items.
+    ///     This is basically finding parents of relations.
+    /// </remarks>
+    [HttpGet("{id:guid}/referenced-by")]
+    [MapToApiVersion("1.0")]
+    [ProducesResponseType(typeof(PagedViewModel<IReferenceResponseModel>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedViewModel<IReferenceResponseModel>>> ReferencedBy(
         CancellationToken cancellationToken,
         Guid id,
@@ -43,37 +47,4 @@ public class ReferencedByDocumentController : DocumentControllerBase
 
         return pagedViewModel;
     }
-
-    /// <summary>
-    ///     Gets a paged list of tracked references for the current item, so you can see where an item is being used.
-    /// </summary>
-    /// <remarks>
-    ///     Used by info tabs on content, media etc. and for the delete and unpublish of single items.
-    ///     This is basically finding parents of relations.
-    /// </remarks>
-    [HttpGet("{id:guid}/referenced-by")]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(typeof(PagedViewModel<IReferenceResponseModel>), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> ReferencedBy2(
-        CancellationToken cancellationToken,
-        Guid id,
-        int skip = 0,
-        int take = 20)
-    {
-        Attempt<PagedModel<RelationItemModel>, GetReferencesOperationStatus> relationItemsAttempt = await _trackedReferencesService.GetPagedRelationsForItemAsync(id, UmbracoObjectTypes.Document, skip, take, true);
-
-        if (relationItemsAttempt.Success is false)
-        {
-            return GetReferencesOperationStatusResult(relationItemsAttempt.Status);
-        }
-
-        var pagedViewModel = new PagedViewModel<IReferenceResponseModel>
-        {
-            Total = relationItemsAttempt.Result.Total,
-            Items = await _relationTypePresentationFactory.CreateReferenceResponseModelsAsync(relationItemsAttempt.Result.Items),
-        };
-
-        return Ok(pagedViewModel);
-    }
 }

src/Umbraco.Cms.Api.Management/Controllers/Document/References/ReferencedDescendantsDocumentController.cs

@@ -3,11 +3,9 @@ using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Common.ViewModels.Pagination;
 using Umbraco.Cms.Api.Management.ViewModels;
-using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Mapping;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Services.OperationStatus;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Document.References;
 
@@ -17,32 +15,12 @@ public class ReferencedDescendantsDocumentController : DocumentControllerBase
     private readonly ITrackedReferencesService _trackedReferencesSkipTakeService;
     private readonly IUmbracoMapper _umbracoMapper;
 
-    public ReferencedDescendantsDocumentController(
-        ITrackedReferencesService trackedReferencesSkipTakeService,
-        IUmbracoMapper umbracoMapper)
+    public ReferencedDescendantsDocumentController(ITrackedReferencesService trackedReferencesSkipTakeService, IUmbracoMapper umbracoMapper)
     {
         _trackedReferencesSkipTakeService = trackedReferencesSkipTakeService;
         _umbracoMapper = umbracoMapper;
     }
 
-    [Obsolete("Use the ReferencedDescendants2 action method instead. Scheduled for removal in Umbraco 19, when ReferencedDescendants2 will be renamed back to ReferencedDescendants.")]
-    [NonAction]
-    public async Task<ActionResult<PagedViewModel<ReferenceByIdModel>>> ReferencedDescendants(
-    CancellationToken cancellationToken,
-    Guid id,
-    int skip = 0,
-    int take = 20)
-    {
-        PagedModel<RelationItemModel> relationItems = await _trackedReferencesSkipTakeService.GetPagedDescendantsInReferencesAsync(id, skip, take, true);
-        var pagedViewModel = new PagedViewModel<ReferenceByIdModel>
-        {
-            Total = relationItems.Total,
-            Items = _umbracoMapper.MapEnumerable<RelationItemModel, ReferenceByIdModel>(relationItems.Items),
-        };
-
-        return pagedViewModel;
-    }
-
     /// <summary>
     ///     Gets a paged list of the descendant nodes of the current item used in any kind of relation.
     /// </summary>
@@ -54,26 +32,19 @@ public class ReferencedDescendantsDocumentController : DocumentControllerBase
     [HttpGet("{id:guid}/referenced-descendants")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedViewModel<ReferenceByIdModel>), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> ReferencedDescendants2(
+    public async Task<ActionResult<PagedViewModel<ReferenceByIdModel>>> ReferencedDescendants(
         CancellationToken cancellationToken,
         Guid id,
         int skip = 0,
         int take = 20)
     {
-        Attempt<PagedModel<RelationItemModel>, GetReferencesOperationStatus> relationItemsAttempt = await _trackedReferencesSkipTakeService.GetPagedDescendantsInReferencesAsync(id, UmbracoObjectTypes.Document, skip, take, true);
-
-        if (relationItemsAttempt.Success is false)
-        {
-            return GetReferencesOperationStatusResult(relationItemsAttempt.Status);
-        }
-
+        PagedModel<RelationItemModel> relationItems = await _trackedReferencesSkipTakeService.GetPagedDescendantsInReferencesAsync(id, skip, take, true);
         var pagedViewModel = new PagedViewModel<ReferenceByIdModel>
         {
-            Total = relationItemsAttempt.Result.Total,
-            Items = _umbracoMapper.MapEnumerable<RelationItemModel, ReferenceByIdModel>(relationItemsAttempt.Result.Items),
+            Total = relationItems.Total,
+            Items = _umbracoMapper.MapEnumerable<RelationItemModel, ReferenceByIdModel>(relationItems.Items),
         };
 
-        return Ok(pagedViewModel);
+        return pagedViewModel;
     }
 }

src/Umbraco.Cms.Api.Management/Controllers/Document/UpdateDomainsController.cs

@@ -1,13 +1,19 @@
-using Asp.Versioning;
+using Asp.Versioning;
+using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.DependencyInjection;
 using Umbraco.Cms.Api.Management.Factories;
 using Umbraco.Cms.Api.Management.ViewModels.Document;
 using Umbraco.Cms.Core;
+using Umbraco.Cms.Core.Actions;
+using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Mapping;
 using Umbraco.Cms.Core.Models.ContentEditing;
+using Umbraco.Cms.Core.Security.Authorization;
 using Umbraco.Cms.Core.Services;
 using Umbraco.Cms.Core.Services.OperationStatus;
+using Umbraco.Cms.Web.Common.Authorization;
 using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Document;
@@ -15,17 +21,30 @@ namespace Umbraco.Cms.Api.Management.Controllers.Document;
 [ApiVersion("1.0")]
 public class UpdateDomainsController : DocumentControllerBase
 {
+    private readonly IAuthorizationService _authorizationService;
     private readonly IDomainService _domainService;
     private readonly IUmbracoMapper _umbracoMapper;
     private readonly IDomainPresentationFactory _domainPresentationFactory;
 
-    public UpdateDomainsController(IDomainService domainService, IUmbracoMapper umbracoMapper, IDomainPresentationFactory domainPresentationFactory)
+    [ActivatorUtilitiesConstructor]
+    public UpdateDomainsController(IAuthorizationService authorizationService, IDomainService domainService, IUmbracoMapper umbracoMapper, IDomainPresentationFactory domainPresentationFactory)
     {
+        _authorizationService = authorizationService;
         _domainService = domainService;
         _umbracoMapper = umbracoMapper;
         _domainPresentationFactory = domainPresentationFactory;
     }
 
+    [Obsolete("Please use the constructor taking all parameters. Scheduled for removal in Umbraco 18.")]
+    public UpdateDomainsController(IDomainService domainService, IUmbracoMapper umbracoMapper, IDomainPresentationFactory domainPresentationFactory)
+        : this(
+            StaticServiceProvider.Instance.GetRequiredService<IAuthorizationService>(),
+            domainService,
+            umbracoMapper,
+            domainPresentationFactory)
+    {
+    }
+
     [MapToApiVersion("1.0")]
     [HttpPut("{id:guid}/domains")]
     [ProducesResponseType(StatusCodes.Status200OK)]
@@ -37,6 +56,16 @@ public class UpdateDomainsController : DocumentControllerBase
         Guid id,
         UpdateDomainsRequestModel updateModel)
     {
+        AuthorizationResult authorizationResult = await _authorizationService.AuthorizeResourceAsync(
+            User,
+            ContentPermissionResource.WithKeys(ActionAssignDomain.ActionLetter, id),
+            AuthorizationPolicies.ContentPermissionByResource);
+
+        if (!authorizationResult.Succeeded)
+        {
+            return Forbidden();
+        }
+
         DomainsUpdateModel domainsUpdateModel = _umbracoMapper.Map<DomainsUpdateModel>(updateModel)!;
 
         Attempt<DomainUpdateResult, DomainOperationStatus> result = await _domainService.UpdateDomainsAsync(id, domainsUpdateModel);

src/Umbraco.Cms.Api.Management/Controllers/Document/UpdateNotificationsController.cs

@@ -1,33 +1,63 @@
 using Asp.Versioning;
+using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.DependencyInjection;
 using Umbraco.Cms.Api.Management.ViewModels.Document;
+using Umbraco.Cms.Core.Actions;
+using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Security;
+using Umbraco.Cms.Core.Security.Authorization;
 using Umbraco.Cms.Core.Services;
+using Umbraco.Cms.Web.Common.Authorization;
+using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Document;
 
 [ApiVersion("1.0")]
 public class UpdateNotificationsController : DocumentControllerBase
 {
+    private readonly IAuthorizationService _authorizationService;
     private readonly IContentEditingService _contentEditingService;
     private readonly INotificationService _notificationService;
     private readonly IBackOfficeSecurityAccessor _backOfficeSecurityAccessor;
 
-    public UpdateNotificationsController(IContentEditingService contentEditingService, INotificationService notificationService, IBackOfficeSecurityAccessor backOfficeSecurityAccessor)
+    [ActivatorUtilitiesConstructor]
+    public UpdateNotificationsController(IAuthorizationService authorizationService, IContentEditingService contentEditingService, INotificationService notificationService, IBackOfficeSecurityAccessor backOfficeSecurityAccessor)
     {
+        _authorizationService = authorizationService;
         _contentEditingService = contentEditingService;
         _notificationService = notificationService;
         _backOfficeSecurityAccessor = backOfficeSecurityAccessor;
     }
 
+    [Obsolete("Please use the constructor taking all parameters. Scheduled for removal in Umbraco 18.")]
+    public UpdateNotificationsController(IContentEditingService contentEditingService, INotificationService notificationService, IBackOfficeSecurityAccessor backOfficeSecurityAccessor)
+        : this(
+            StaticServiceProvider.Instance.GetRequiredService<IAuthorizationService>(),
+            contentEditingService,
+            notificationService,
+            backOfficeSecurityAccessor)
+    {
+    }
+
     [MapToApiVersion("1.0")]
     [HttpPut("{id:guid}/notifications")]
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
     public async Task<IActionResult> UpdateNotifications(CancellationToken cancellationToken, Guid id, UpdateDocumentNotificationsRequestModel updateModel)
     {
+        AuthorizationResult authorizationResult = await _authorizationService.AuthorizeResourceAsync(
+            User,
+            ContentPermissionResource.WithKeys(ActionBrowse.ActionLetter, id),
+            AuthorizationPolicies.ContentPermissionByResource);
+
+        if (!authorizationResult.Succeeded)
+        {
+            return Forbidden();
+        }
+
         IContent? content = await _contentEditingService.GetAsync(id);
         if (content == null)
         {

src/Umbraco.Cms.Api.Management/Controllers/Document/ValidateCreateDocumentController.cs

@@ -21,6 +21,20 @@ public class ValidateCreateDocumentController : CreateDocumentControllerBase
     private readonly IContentEditingService _contentEditingService;
     private readonly IBackOfficeSecurityAccessor _backOfficeSecurityAccessor;
 
+    [Obsolete("Please use the constructor taking all parameters. Scheduled for removal in Umbraco 17.")]
+    public ValidateCreateDocumentController(
+        IAuthorizationService authorizationService,
+        IDocumentEditingPresentationFactory documentEditingPresentationFactory,
+        IContentEditingService contentEditingService)
+        : this(
+              authorizationService,
+              documentEditingPresentationFactory,
+              contentEditingService,
+              StaticServiceProvider.Instance.GetRequiredService<IBackOfficeSecurityAccessor>())
+    {
+    }
+
+    [ActivatorUtilitiesConstructor]
     public ValidateCreateDocumentController(
         IAuthorizationService authorizationService,
         IDocumentEditingPresentationFactory documentEditingPresentationFactory,

src/Umbraco.Cms.Api.Management/Controllers/Document/ValidateUpdateDocumentController.cs

@@ -21,6 +21,20 @@ public class ValidateUpdateDocumentController : UpdateDocumentControllerBase
     private readonly IDocumentEditingPresentationFactory _documentEditingPresentationFactory;
     private readonly IBackOfficeSecurityAccessor _backOfficeSecurityAccessor;
 
+    [Obsolete("Please use the constructor taking all parameters. Scheduled for removal in Umbraco 17.")]
+    public ValidateUpdateDocumentController(
+        IAuthorizationService authorizationService,
+        IContentEditingService contentEditingService,
+        IDocumentEditingPresentationFactory documentEditingPresentationFactory)
+        : this(
+              authorizationService,
+              contentEditingService,
+              documentEditingPresentationFactory,
+              StaticServiceProvider.Instance.GetRequiredService<IBackOfficeSecurityAccessor>())
+    {
+    }
+
+    [ActivatorUtilitiesConstructor]
     public ValidateUpdateDocumentController(
         IAuthorizationService authorizationService,
         IContentEditingService contentEditingService,

src/Umbraco.Cms.Api.Management/Controllers/DocumentType/CreateDocumentTypeTemplateController.cs

@@ -1,47 +0,0 @@
-using Asp.Versioning;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc;
-using Umbraco.Cms.Api.Management.Controllers.Template;
-using Umbraco.Cms.Api.Management.ViewModels.DocumentType;
-using Umbraco.Cms.Core;
-using Umbraco.Cms.Core.Security;
-using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Services.OperationStatus;
-
-namespace Umbraco.Cms.Api.Management.Controllers.DocumentType;
-
-[ApiVersion("1.0")]
-public class CreateDocumentTypeTemplateController : DocumentTypeControllerBase
-{
-    private readonly IContentTypeService _contentTypeService;
-    private readonly IBackOfficeSecurityAccessor _backOfficeSecurityAccessor;
-
-    public CreateDocumentTypeTemplateController(
-        IContentTypeService contentTypeService,
-        IBackOfficeSecurityAccessor backOfficeSecurityAccessor)
-    {
-        _contentTypeService = contentTypeService;
-        _backOfficeSecurityAccessor = backOfficeSecurityAccessor;
-    }
-
-    [HttpPost("{id:guid}/template")]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(StatusCodes.Status201Created)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
-    public async Task<IActionResult> CreateTemplate(
-        CancellationToken cancellationToken,
-        Guid id,
-        CreateDocumentTypeTemplateRequestModel requestModel)
-    {
-        Attempt<Guid?, ContentTypeOperationStatus> result = await _contentTypeService.CreateTemplateAsync(
-            id,
-            requestModel.Name,
-            requestModel.Alias,
-            requestModel.IsDefault,
-            CurrentUserKey(_backOfficeSecurityAccessor));
-
-        return result.Success
-            ? CreatedAtId<ByKeyTemplateController>(controller => nameof(controller.ByKey), result.Result!.Value)
-            : OperationStatusResult(result.Status);
-    }
-}

src/Umbraco.Cms.Api.Management/Controllers/DocumentType/DocumentTypeControllerBase.cs

@@ -41,10 +41,6 @@ public abstract class DocumentTypeControllerBase : ManagementApiControllerBase
                     .WithTitle("Invalid property type alias")
                     .WithDetail("One or more property type aliases are invalid")
                     .Build()),
-                ContentTypeOperationStatus.InvalidTemplateAlias => new BadRequestObjectResult(problemDetailsBuilder
-                    .WithTitle("Invalid template alias")
-                    .WithDetail("The specified template alias is invalid")
-                    .Build()),
                 ContentTypeOperationStatus.PropertyTypeAliasCannotEqualContentTypeAlias => new BadRequestObjectResult(problemDetailsBuilder
                     .WithTitle("Invalid property type alias")
                     .WithDetail("The property type alias cannot be the same as the content type alias")

src/Umbraco.Cms.Api.Management/Controllers/DocumentType/Item/SearchDocumentTypeItemController.cs

@@ -16,12 +16,35 @@ public class SearchDocumentTypeItemController : DocumentTypeItemControllerBase
     private readonly IUmbracoMapper _mapper;
     private readonly IContentTypeSearchService _contentTypeSearchService;
 
+    [Obsolete("Please use ctor that only accepts IUmbracoMapper & IContentTypeSearchService, scheduled for removal in v17")]
+    public SearchDocumentTypeItemController(IEntitySearchService entitySearchService, IContentTypeService contentTypeService, IUmbracoMapper mapper)
+    : this(mapper, StaticServiceProvider.Instance.GetRequiredService<IContentTypeSearchService>())
+    {
+    }
+
+    [Obsolete("Please use ctor that only accepts IUmbracoMapper & IContentTypeSearchService, scheduled for removal in v17")]
+    // We need to have this constructor, or else we get ambiguous constructor error
+    public SearchDocumentTypeItemController(
+        IEntitySearchService entitySearchService,
+        IContentTypeService contentTypeService,
+        IUmbracoMapper mapper,
+        IContentTypeSearchService contentTypeSearchService)
+        : this(mapper, contentTypeSearchService)
+    {
+    }
+
+    [ActivatorUtilitiesConstructor]
     public SearchDocumentTypeItemController(IUmbracoMapper mapper, IContentTypeSearchService contentTypeSearchService)
     {
         _mapper = mapper;
         _contentTypeSearchService = contentTypeSearchService;
     }
 
+    [NonAction]
+    [Obsolete("Scheduled to be removed in v16, use the non obsoleted method instead")]
+    public async Task<IActionResult> Search(CancellationToken cancellationToken, string query, int skip = 0, int take = 100)
+        => await SearchDocumentType(cancellationToken, query, null, skip, take);
+
     [HttpGet("search")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedModel<DocumentTypeItemResponseModel>), StatusCodes.Status200OK)]

src/Umbraco.Cms.Api.Management/Controllers/HealthCheck/ExecuteActionHealthCheckController.cs

@@ -32,7 +32,6 @@ public class ExecuteActionHealthCheckController : HealthCheckControllerBase
     /// <summary>
     ///     Executes a given action from a HealthCheck.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="action">The action to be executed.</param>
     /// <returns>The result of a health check after the health check action is performed.</returns>
     [HttpPost("execute-action")]

src/Umbraco.Cms.Api.Management/Controllers/HealthCheck/Group/AllHealthCheckGroupController.cs

@@ -25,7 +25,6 @@ public class AllHealthCheckGroupController : HealthCheckGroupControllerBase
     /// <summary>
     ///     Gets a paginated grouped list of all names the health checks are grouped by.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="skip">The amount of items to skip.</param>
     /// <param name="take">The amount of items to take.</param>
     /// <returns>The paged result of health checks group names.</returns>

src/Umbraco.Cms.Api.Management/Controllers/HealthCheck/Group/ByNameHealthCheckGroupController.cs

@@ -25,7 +25,6 @@ public class ByNameHealthCheckGroupController : HealthCheckGroupControllerBase
     /// <summary>
     ///     Gets a health check group with all its health checks by a group name.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="name">The name of the group.</param>
     /// <returns>The health check group or not found result.</returns>
     [HttpGet("{name}")]

src/Umbraco.Cms.Api.Management/Controllers/HealthCheck/Group/CheckHealthCheckGroupController.cs

@@ -18,7 +18,6 @@ public class CheckHealthCheckGroupController : HealthCheckGroupControllerBase
     /// <summary>
     ///     Check all health checks in the group with a given group name.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="name">The name of the group.</param>
     /// <remarks>The health check result(s) will be included as part of the health checks.</remarks>
     /// <returns>The health check group or not found result.</returns>

src/Umbraco.Cms.Api.Management/Controllers/Help/GetHelpController.cs

@@ -11,13 +11,12 @@ using Umbraco.Cms.Api.Common.ViewModels.Pagination;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Help;
 
-[Obsolete("This is no longer used and will be removed in v19")]
 [ApiVersion("1.0")]
 public class GetHelpController : HelpControllerBase
 {
     private readonly ILogger<GetHelpController> _logger;
     private readonly IJsonSerializer _jsonSerializer;
-    private readonly HelpPageSettings _helpPageSettings;
+    private HelpPageSettings _helpPageSettings;
 
     public GetHelpController(
         IOptionsMonitor<HelpPageSettings> helpPageSettings,
@@ -27,8 +26,11 @@ public class GetHelpController : HelpControllerBase
         _logger = logger;
         _jsonSerializer = jsonSerializer;
         _helpPageSettings = helpPageSettings.CurrentValue;
+        helpPageSettings.OnChange(UpdateHelpPageSettings);
     }
 
+    private void UpdateHelpPageSettings(HelpPageSettings settings) => _helpPageSettings = settings;
+
     [HttpGet]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]

src/Umbraco.Cms.Api.Management/Controllers/Help/HelpControllerBase.cs

@@ -3,7 +3,6 @@ using Umbraco.Cms.Api.Management.Routing;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Help;
 
-[Obsolete("This is no longer used and will be removed in v19")]
 [VersionedApiBackOfficeRoute("help")]
 [ApiExplorerSettings(GroupName = "Help")]
 public abstract class HelpControllerBase : ManagementApiControllerBase

src/Umbraco.Cms.Api.Management/Controllers/Indexer/DetailsIndexerController.cs

@@ -24,9 +24,8 @@ public class DetailsIndexerController : IndexerControllerBase
     /// <summary>
     ///     Check if the index has been rebuilt
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
-    /// <param name="indexName">The name of the index.</param>
-    /// <returns>The index details.</returns>
+    /// <param name="indexName"></param>
+    /// <returns></returns>
     /// <remarks>
     ///     This is kind of rudimentary since there's no way we can know that the index has rebuilt, we
     ///     have a listener for the index op complete so we'll just check if that id is no longer there in the runtime cache

src/Umbraco.Cms.Api.Management/Controllers/Indexer/RebuildIndexerController.cs

@@ -26,18 +26,17 @@ public class RebuildIndexerController : IndexerControllerBase
     }
 
     /// <summary>
-    ///     Rebuilds the index.
+    ///     Rebuilds the index
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
-    /// <param name="indexName">The name of the index to rebuild.</param>
-    /// <returns>The result of the rebuild operation.</returns>
+    /// <param name="indexName"></param>
+    /// <returns></returns>
     [HttpPost("{indexName}/rebuild")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status409Conflict)]
     [ProducesResponseType(StatusCodes.Status200OK)]
-    public async Task<IActionResult> Rebuild(CancellationToken cancellationToken, string indexName)
+    public Task<IActionResult> Rebuild(CancellationToken cancellationToken, string indexName)
     {
         if (!_examineManager.TryGetIndex(indexName, out IIndex? index))
         {
@@ -49,7 +48,7 @@ public class RebuildIndexerController : IndexerControllerBase
                 Type = "Error",
             };
 
-            return NotFound(invalidModelProblem);
+            return Task.FromResult<IActionResult>(NotFound(invalidModelProblem));
         }
 
         if (!_indexingRebuilderService.CanRebuild(index.Name))
@@ -58,19 +57,19 @@ public class RebuildIndexerController : IndexerControllerBase
             {
                 Title = "Could not validate the populator",
                 Detail =
-                    $"The index {index.Name} could not be rebuilt because we could not validate its associated {typeof(IIndexPopulator)}",
+                    $"The index {index?.Name} could not be rebuilt because we could not validate its associated {typeof(IIndexPopulator)}",
                 Status = StatusCodes.Status400BadRequest,
                 Type = "Error",
             };
 
-            return BadRequest(invalidModelProblem);
+            return Task.FromResult<IActionResult>(BadRequest(invalidModelProblem));
         }
 
         _logger.LogInformation("Rebuilding index '{IndexName}'", indexName);
 
-        if (await _indexingRebuilderService.TryRebuildAsync(index, indexName))
+        if (_indexingRebuilderService.TryRebuild(index, indexName))
         {
-            return Ok();
+            return Task.FromResult<IActionResult>(Ok());
         }
 
         var problemDetails = new ProblemDetails
@@ -81,6 +80,6 @@ public class RebuildIndexerController : IndexerControllerBase
             Type = "Error",
         };
 
-        return Conflict(problemDetails);
+        return Task.FromResult<IActionResult>(Conflict(problemDetails));
     }
 }

src/Umbraco.Cms.Api.Management/Controllers/Install/SettingsInstallController.cs

@@ -1,7 +1,6 @@
 using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
-using Microsoft.Extensions.DependencyInjection;
 using Umbraco.Cms.Core.Mapping;
 using Umbraco.Cms.Infrastructure.Install;
 using Umbraco.Cms.Api.Management.ViewModels.Installer;
@@ -13,23 +12,16 @@ namespace Umbraco.Cms.Api.Management.Controllers.Install;
 [ApiVersion("1.0")]
 public class SettingsInstallController : InstallControllerBase
 {
+    private readonly InstallHelper _installHelper;
     private readonly IInstallSettingsFactory _installSettingsFactory;
     private readonly IUmbracoMapper _mapper;
 
-    [Obsolete("Please use the constructor without the InstallHelper parameter. Scheduled for removal in Umbraco 19.")]
     public SettingsInstallController(
         InstallHelper installHelper,
         IInstallSettingsFactory installSettingsFactory,
         IUmbracoMapper mapper)
-        : this(installSettingsFactory, mapper)
-    {
-    }
-
-    [ActivatorUtilitiesConstructor]
-    public SettingsInstallController(
-        IInstallSettingsFactory installSettingsFactory,
-        IUmbracoMapper mapper)
     {
+        _installHelper = installHelper;
         _installSettingsFactory = installSettingsFactory;
         _mapper = mapper;
     }
@@ -40,6 +32,9 @@ public class SettingsInstallController : InstallControllerBase
     [ProducesResponseType(typeof(InstallSettingsResponseModel), StatusCodes.Status200OK)]
     public async Task<IActionResult> Settings(CancellationToken cancellationToken)
     {
+        // Register that the install has started
+        await _installHelper.SetInstallStatusAsync(false, string.Empty);
+
         InstallSettingsModel installSettings = _installSettingsFactory.GetInstallSettings();
         InstallSettingsResponseModel responseModel = _mapper.Map<InstallSettingsResponseModel>(installSettings)!;
 

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/AllLogViewerController.cs

@@ -28,7 +28,6 @@ public class AllLogViewerController : LogViewerControllerBase
     /// <summary>
     ///     Gets a paginated list of all logs for a specific date range.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="skip">The amount of items to skip.</param>
     /// <param name="take">The amount of items to take.</param>
     /// <param name="orderDirection">

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/AllMessageTemplateLogViewerController.cs

@@ -27,7 +27,6 @@ public class AllMessageTemplateLogViewerController : LogViewerControllerBase
     /// <summary>
     ///     Gets a paginated list of all log message templates for a specific date range.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="skip">The amount of items to skip.</param>
     /// <param name="take">The amount of items to take.</param>
     /// <param name="startDate">The start date for the date range (can be null).</param>

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/AllSinkLevelLogViewerController.cs

@@ -24,7 +24,6 @@ public class AllSinkLevelLogViewerController : LogViewerControllerBase
     /// <summary>
     ///     Gets a paginated list of all loggers' levels.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="skip">The amount of items to skip.</param>
     /// <param name="take">The amount of items to take.</param>
     /// <returns>The paged result of the configured loggers and their level.</returns>

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/LogLevelCountLogViewerController.cs

@@ -25,7 +25,6 @@ public class LogLevelCountLogViewerController : LogViewerControllerBase
     /// <summary>
     ///     Gets the count for each log level from the logs for a specific date range.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="startDate">The start date for the date range (can be null).</param>
     /// <param name="endDate">The end date for the date range (can be null).</param>
     /// <returns>The log level counts from the (filtered) logs.</returns>

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/SavedSearch/AllSavedSearchLogViewerController.cs

@@ -24,7 +24,6 @@ public class AllSavedSearchLogViewerController : SavedSearchLogViewerControllerB
     /// <summary>
     ///     Gets a paginated list of all saved log searches.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="skip">The amount of items to skip.</param>
     /// <param name="take">The amount of items to take.</param>
     /// <returns>The paged result of the saved log searches.</returns>

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/SavedSearch/ByNameSavedSearchLogViewerController.cs

@@ -23,7 +23,6 @@ public class ByNameSavedSearchLogViewerController : SavedSearchLogViewerControll
     /// <summary>
     ///     Gets a saved log search by name.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="name">The name of the saved log search.</param>
     /// <returns>The saved log search or not found result.</returns>
     [HttpGet("{name}")]

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/SavedSearch/CreateSavedSearchLogViewerController.cs

@@ -19,7 +19,6 @@ public class CreateSavedSearchLogViewerController : SavedSearchLogViewerControll
     /// <summary>
     ///     Creates a saved log search.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="savedSearch">The log search to be saved.</param>
     /// <returns>The location of the saved log search after the creation.</returns>
     [HttpPost]

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/SavedSearch/DeleteSavedSearchLogViewerController.cs

@@ -18,7 +18,6 @@ public class DeleteSavedSearchLogViewerController : SavedSearchLogViewerControll
     /// <summary>
     ///     Deletes a saved log search with a given name.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="name">The name of the saved log search.</param>
     /// <returns>The result of the deletion.</returns>
     [HttpDelete("{name}")]

src/Umbraco.Cms.Api.Management/Controllers/LogViewer/ValidateLogFileSizeLogViewerController.cs

@@ -17,7 +17,6 @@ public class ValidateLogFileSizeLogViewerController : LogViewerControllerBase
     /// <summary>
     ///     Gets a value indicating whether or not you are able to view logs for a specified date range.
     /// </summary>
-    /// <param name="cancellationToken">The cancellation token.</param>
     /// <param name="startDate">The start date for the date range (can be null).</param>
     /// <param name="endDate">The end date for the date range (can be null).</param>
     /// <returns>The boolean result.</returns>

src/Umbraco.Cms.Api.Management/Controllers/Media/Collection/MediaCollectionControllerBase.cs

@@ -26,6 +26,12 @@ public abstract class MediaCollectionControllerBase : ContentCollectionControlle
     {
     }
 
+    [Obsolete("Please use the constructor with all parameters. Scheduled to be removed in Umbraco 18")]
+    protected MediaCollectionControllerBase(IUmbracoMapper mapper)
+        : base(mapper)
+    {
+    }
+
     protected IActionResult CollectionOperationStatusResult(ContentCollectionOperationStatus status)
         => ContentCollectionOperationStatusResult(status, "media");
 }

src/Umbraco.Cms.Api.Management/Controllers/Media/Item/SearchMediaItemController.cs

@@ -4,7 +4,6 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.DependencyInjection;
 using Umbraco.Cms.Api.Management.Factories;
 using Umbraco.Cms.Api.Management.ViewModels.Media.Item;
-using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Models.Entities;
@@ -19,32 +18,16 @@ public class SearchMediaItemController : MediaItemControllerBase
     private readonly IIndexedEntitySearchService _indexedEntitySearchService;
     private readonly IMediaPresentationFactory _mediaPresentationFactory;
     private readonly IDataTypeService _dataTypeService;
-    private readonly IMediaTypeService _mediaTypeService;
 
     [ActivatorUtilitiesConstructor]
     public SearchMediaItemController(
         IIndexedEntitySearchService indexedEntitySearchService,
         IMediaPresentationFactory mediaPresentationFactory,
-        IDataTypeService dataTypeService,
-        IMediaTypeService mediaTypeService)
+        IDataTypeService dataTypeService)
     {
         _indexedEntitySearchService = indexedEntitySearchService;
         _mediaPresentationFactory = mediaPresentationFactory;
         _dataTypeService = dataTypeService;
-        _mediaTypeService = mediaTypeService;
-    }
-
-    [Obsolete("Use the non-obsolete constructor instead, will be removed in Umbraco 18.")]
-    public SearchMediaItemController(
-        IIndexedEntitySearchService indexedEntitySearchService,
-        IMediaPresentationFactory mediaPresentationFactory,
-        IDataTypeService dataTypeService)
-        : this(
-            indexedEntitySearchService,
-            mediaPresentationFactory,
-            dataTypeService,
-            StaticServiceProvider.Instance.GetRequiredService<IMediaTypeService>())
-    {
     }
 
     [Obsolete("Use the non-obsolete constructor instead, will be removed in Umbraco 18.")]
@@ -94,17 +77,6 @@ public class SearchMediaItemController : MediaItemControllerBase
         [FromQuery] IEnumerable<Guid>? allowedMediaTypes = null,
         Guid? dataTypeId = null)
     {
-        // We always want to include folders in the search results (aligns with behaviour in Umbraco 13, and allows folders
-        // to be selected to find the selectable items inside).
-        if (allowedMediaTypes is not null)
-        {
-            IMediaType? folderMediaType = _mediaTypeService.Get(Constants.Conventions.MediaTypes.Folder);
-            if (folderMediaType is not null && allowedMediaTypes.Contains(folderMediaType.Key) is false)
-            {
-                allowedMediaTypes = [..allowedMediaTypes, folderMediaType.Key];
-            }
-        }
-
         var ignoreUserStartNodes = await IgnoreUserStartNodes(dataTypeId);
         PagedModel<IEntitySlim> searchResult = await _indexedEntitySearchService.SearchAsync(
             UmbracoObjectTypes.Media,

src/Umbraco.Cms.Api.Management/Controllers/Media/References/ReferencedByMediaController.cs

@@ -4,10 +4,8 @@ using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Common.ViewModels.Pagination;
 using Umbraco.Cms.Api.Management.Factories;
 using Umbraco.Cms.Api.Management.ViewModels.TrackedReferences;
-using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Services.OperationStatus;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Media.References;
 
@@ -17,16 +15,22 @@ public class ReferencedByMediaController : MediaControllerBase
     private readonly ITrackedReferencesService _trackedReferencesService;
     private readonly IRelationTypePresentationFactory _relationTypePresentationFactory;
 
-    public ReferencedByMediaController(
-        ITrackedReferencesService trackedReferencesService,
-        IRelationTypePresentationFactory relationTypePresentationFactory)
+    public ReferencedByMediaController(ITrackedReferencesService trackedReferencesService, IRelationTypePresentationFactory relationTypePresentationFactory)
     {
         _trackedReferencesService = trackedReferencesService;
         _relationTypePresentationFactory = relationTypePresentationFactory;
     }
 
-    [Obsolete("Use the ReferencedBy2 action method instead. Scheduled for removal in Umbraco 19, when ReferencedBy2 will be renamed back to ReferencedBy.")]
-    [NonAction]
+    /// <summary>
+    ///     Gets a page list of tracked references for the current item, so you can see where an item is being used.
+    /// </summary>
+    /// <remarks>
+    ///     Used by info tabs on content, media etc. and for the delete and unpublish of single items.
+    ///     This is basically finding parents of relations.
+    /// </remarks>
+    [HttpGet("{id:guid}/referenced-by")]
+    [MapToApiVersion("1.0")]
+    [ProducesResponseType(typeof(PagedViewModel<IReferenceResponseModel>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedViewModel<IReferenceResponseModel>>> ReferencedBy(
         CancellationToken cancellationToken,
         Guid id,
@@ -43,37 +47,4 @@ public class ReferencedByMediaController : MediaControllerBase
 
         return pagedViewModel;
     }
-
-    /// <summary>
-    ///     Gets a page list of tracked references for the current item, so you can see where an item is being used.
-    /// </summary>
-    /// <remarks>
-    ///     Used by info tabs on content, media etc. and for the delete and unpublish of single items.
-    ///     This is basically finding parents of relations.
-    /// </remarks>
-    [HttpGet("{id:guid}/referenced-by")]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(typeof(PagedViewModel<IReferenceResponseModel>), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> ReferencedBy2(
-        CancellationToken cancellationToken,
-        Guid id,
-        int skip = 0,
-        int take = 20)
-    {
-        Attempt<PagedModel<RelationItemModel>, GetReferencesOperationStatus> relationItemsAttempt = await _trackedReferencesService.GetPagedRelationsForItemAsync(id, UmbracoObjectTypes.Media, skip, take, true);
-
-        if (relationItemsAttempt.Success is false)
-        {
-            return GetReferencesOperationStatusResult(relationItemsAttempt.Status);
-        }
-
-        var pagedViewModel = new PagedViewModel<IReferenceResponseModel>
-        {
-            Total = relationItemsAttempt.Result.Total,
-            Items = await _relationTypePresentationFactory.CreateReferenceResponseModelsAsync(relationItemsAttempt.Result.Items),
-        };
-
-        return Ok(pagedViewModel);
-    }
 }

src/Umbraco.Cms.Api.Management/Controllers/Media/References/ReferencedDescendantsMediaController.cs

@@ -3,11 +3,9 @@ using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Common.ViewModels.Pagination;
 using Umbraco.Cms.Api.Management.ViewModels;
-using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Mapping;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Services.OperationStatus;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Media.References;
 
@@ -16,32 +14,13 @@ public class ReferencedDescendantsMediaController : MediaControllerBase
 {
     private readonly ITrackedReferencesService _trackedReferencesSkipTakeService;
     private readonly IUmbracoMapper _umbracoMapper;
-    public ReferencedDescendantsMediaController(
-        ITrackedReferencesService trackedReferencesSkipTakeService,
-        IUmbracoMapper umbracoMapper)
+
+    public ReferencedDescendantsMediaController(ITrackedReferencesService trackedReferencesSkipTakeService, IUmbracoMapper umbracoMapper)
     {
         _trackedReferencesSkipTakeService = trackedReferencesSkipTakeService;
         _umbracoMapper = umbracoMapper;
     }
 
-    [Obsolete("Use the ReferencedDescendants2 action method instead. Scheduled for removal in Umbraco 19, when ReferencedDescendants2 will be renamed back to ReferencedDescendants.")]
-    [NonAction]
-    public async Task<ActionResult<PagedViewModel<ReferenceByIdModel>>> ReferencedDescendants(
-    CancellationToken cancellationToken,
-    Guid id,
-    int skip = 0,
-    int take = 20)
-    {
-        PagedModel<RelationItemModel> relationItems = await _trackedReferencesSkipTakeService.GetPagedDescendantsInReferencesAsync(id, skip, take, true);
-        var pagedViewModel = new PagedViewModel<ReferenceByIdModel>
-        {
-            Total = relationItems.Total,
-            Items = _umbracoMapper.MapEnumerable<RelationItemModel, ReferenceByIdModel>(relationItems.Items),
-        };
-
-        return pagedViewModel;
-    }
-
     /// <summary>
     ///     Gets a page list of the child nodes of the current item used in any kind of relation.
     /// </summary>
@@ -53,26 +32,19 @@ public class ReferencedDescendantsMediaController : MediaControllerBase
     [HttpGet("{id:guid}/referenced-descendants")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedViewModel<ReferenceByIdModel>), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> ReferencedDescendants2(
+    public async Task<ActionResult<PagedViewModel<ReferenceByIdModel>>> ReferencedDescendants(
         CancellationToken cancellationToken,
         Guid id,
         int skip = 0,
         int take = 20)
     {
-        Attempt<PagedModel<RelationItemModel>, GetReferencesOperationStatus> relationItemsAttempt = await _trackedReferencesSkipTakeService.GetPagedDescendantsInReferencesAsync(id, UmbracoObjectTypes.Media, skip, take, true);
-
-        if (relationItemsAttempt.Success is false)
-        {
-            return GetReferencesOperationStatusResult(relationItemsAttempt.Status);
-        }
-
+        PagedModel<RelationItemModel> relationItems = await _trackedReferencesSkipTakeService.GetPagedDescendantsInReferencesAsync(id, skip, take, true);
         var pagedViewModel = new PagedViewModel<ReferenceByIdModel>
         {
-            Total = relationItemsAttempt.Result.Total,
-            Items = _umbracoMapper.MapEnumerable<RelationItemModel, ReferenceByIdModel>(relationItemsAttempt.Result.Items),
+            Total = relationItems.Total,
+            Items = _umbracoMapper.MapEnumerable<RelationItemModel, ReferenceByIdModel>(relationItems.Items),
         };
 
-        return Ok(pagedViewModel);
+        return pagedViewModel;
     }
 }

src/Umbraco.Cms.Api.Management/Controllers/MediaType/MediaTypeControllerBase.cs

@@ -31,7 +31,7 @@ public abstract class MediaTypeControllerBase : ManagementApiControllerBase
                 .WithDetail("The import failed due to not being able to convert the file into proper xml.")
                 .Build()),
             MediaTypeImportOperationStatus.MediaTypeExists => BadRequest(problemDetailsBuilder
-                .WithTitle("Failed to import because media type exists")
+                .WithTitle("Failed to import because media type exits")
                 .WithDetail("The import failed because the media type that was being imported already exits.")
                 .Build()),
             MediaTypeImportOperationStatus.TypeMismatch => BadRequest(problemDetailsBuilder
@@ -42,6 +42,6 @@ public abstract class MediaTypeControllerBase : ManagementApiControllerBase
                 .WithTitle("Invalid Id")
                 .WithDetail("The import failed because the id of the media type you are trying to update did not match the id in the file.")
                 .Build()),
-            _ => StatusCode(StatusCodes.Status500InternalServerError, "Unknown media type import operation status."),
+            _ => StatusCode(StatusCodes.Status500InternalServerError, "Unknown media type import operation status.")
         });
 }

src/Umbraco.Cms.Api.Management/Controllers/Member/Item/SearchMemberItemController.cs

@@ -24,15 +24,15 @@ public class SearchMemberItemController : MemberItemControllerBase
     [HttpGet("search")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedModel<MemberItemResponseModel>), StatusCodes.Status200OK)]
-    public async Task<IActionResult> SearchWithAllowedTypes(CancellationToken cancellationToken, string query, int skip = 0, int take = 100, [FromQuery]IEnumerable<Guid>? allowedMemberTypes = null)
+    public Task<IActionResult> SearchWithAllowedTypes(CancellationToken cancellationToken, string query, int skip = 0, int take = 100, [FromQuery]IEnumerable<Guid>? allowedMemberTypes = null)
     {
-        PagedModel<IEntitySlim> searchResult = await _indexedEntitySearchService.SearchAsync(UmbracoObjectTypes.Member, query, null, allowedMemberTypes, false, "*", skip, take);
+        PagedModel<IEntitySlim> searchResult = _indexedEntitySearchService.Search(UmbracoObjectTypes.Member, query, null, allowedMemberTypes, skip, take);
         var result = new PagedModel<MemberItemResponseModel>
         {
             Items = searchResult.Items.OfType<IMemberEntitySlim>().Select(_memberPresentationFactory.CreateItemResponseModel),
-            Total = searchResult.Total,
+            Total = searchResult.Total
         };
 
-        return await Task.FromResult<IActionResult>(Ok(result));
+        return Task.FromResult<IActionResult>(Ok(result));
     }
 }

src/Umbraco.Cms.Api.Management/Controllers/Member/References/ReferencedByMemberController.cs

@@ -4,10 +4,8 @@ using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Common.ViewModels.Pagination;
 using Umbraco.Cms.Api.Management.Factories;
 using Umbraco.Cms.Api.Management.ViewModels.TrackedReferences;
-using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Services.OperationStatus;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Member.References;
 
@@ -17,16 +15,22 @@ public class ReferencedByMemberController : MemberControllerBase
     private readonly ITrackedReferencesService _trackedReferencesService;
     private readonly IRelationTypePresentationFactory _relationTypePresentationFactory;
 
-    public ReferencedByMemberController(
-        ITrackedReferencesService trackedReferencesService,
-        IRelationTypePresentationFactory relationTypePresentationFactory)
+    public ReferencedByMemberController(ITrackedReferencesService trackedReferencesService, IRelationTypePresentationFactory relationTypePresentationFactory)
     {
         _trackedReferencesService = trackedReferencesService;
         _relationTypePresentationFactory = relationTypePresentationFactory;
     }
 
-    [Obsolete("Use the ReferencedBy2 action method instead. Scheduled for removal in Umbraco 19, when ReferencedBy2 will be renamed back to ReferencedBy.")]
-    [NonAction]
+    /// <summary>
+    ///     Gets a page list of tracked references for the current item, so you can see where an item is being used.
+    /// </summary>
+    /// <remarks>
+    ///     Used by info tabs on content, media etc. and for the delete and unpublish of single items.
+    ///     This is basically finding parents of relations.
+    /// </remarks>
+    [HttpGet("{id:guid}/referenced-by")]
+    [MapToApiVersion("1.0")]
+    [ProducesResponseType(typeof(PagedViewModel<IReferenceResponseModel>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedViewModel<IReferenceResponseModel>>> ReferencedBy(
         CancellationToken cancellationToken,
         Guid id,
@@ -43,37 +47,4 @@ public class ReferencedByMemberController : MemberControllerBase
 
         return pagedViewModel;
     }
-
-    /// <summary>
-    ///     Gets a page list of tracked references for the current item, so you can see where an item is being used.
-    /// </summary>
-    /// <remarks>
-    ///     Used by info tabs on content, media etc. and for the delete and unpublish of single items.
-    ///     This is basically finding parents of relations.
-    /// </remarks>
-    [HttpGet("{id:guid}/referenced-by")]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(typeof(PagedViewModel<IReferenceResponseModel>), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> ReferencedBy2(
-        CancellationToken cancellationToken,
-        Guid id,
-        int skip = 0,
-        int take = 20)
-    {
-        Attempt<PagedModel<RelationItemModel>, GetReferencesOperationStatus> relationItemsAttempt = await _trackedReferencesService.GetPagedRelationsForItemAsync(id, UmbracoObjectTypes.Member, skip, take, true);
-
-        if (relationItemsAttempt.Success is false)
-        {
-            return GetReferencesOperationStatusResult(relationItemsAttempt.Status);
-        }
-
-        var pagedViewModel = new PagedViewModel<IReferenceResponseModel>
-        {
-            Total = relationItemsAttempt.Result.Total,
-            Items = await _relationTypePresentationFactory.CreateReferenceResponseModelsAsync(relationItemsAttempt.Result.Items),
-        };
-
-        return Ok(pagedViewModel);
-    }
 }

src/Umbraco.Cms.Api.Management/Controllers/Member/References/ReferencedDescendantsMemberController.cs

@@ -3,11 +3,9 @@ using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Common.ViewModels.Pagination;
 using Umbraco.Cms.Api.Management.ViewModels;
-using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Mapping;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Services.OperationStatus;
 
 namespace Umbraco.Cms.Api.Management.Controllers.Member.References;
 
@@ -17,16 +15,23 @@ public class ReferencedDescendantsMemberController : MemberControllerBase
     private readonly ITrackedReferencesService _trackedReferencesSkipTakeService;
     private readonly IUmbracoMapper _umbracoMapper;
 
-    public ReferencedDescendantsMemberController(
-        ITrackedReferencesService trackedReferencesSkipTakeService,
-        IUmbracoMapper umbracoMapper)
+    public ReferencedDescendantsMemberController(ITrackedReferencesService trackedReferencesSkipTakeService, IUmbracoMapper umbracoMapper)
     {
         _trackedReferencesSkipTakeService = trackedReferencesSkipTakeService;
         _umbracoMapper = umbracoMapper;
     }
 
-    [Obsolete("Use the ReferencedDescendants2 action method instead. Scheduled for removal in Umbraco 19, when ReferencedDescendants2 will be renamed back to ReferencedDescendants.")]
-    [NonAction]
+    /// <summary>
+    ///     Gets a page list of the child nodes of the current item used in any kind of relation.
+    /// </summary>
+    /// <remarks>
+    ///     Used when deleting and unpublishing a single item to check if this item has any descending items that are in any
+    ///     kind of relation.
+    ///     This is basically finding the descending items which are children in relations.
+    /// </remarks>
+    [HttpGet("{id:guid}/referenced-descendants")]
+    [MapToApiVersion("1.0")]
+    [ProducesResponseType(typeof(PagedViewModel<ReferenceByIdModel>), StatusCodes.Status200OK)]
     public async Task<ActionResult<PagedViewModel<ReferenceByIdModel>>> ReferencedDescendants(
         CancellationToken cancellationToken,
         Guid id,
@@ -42,38 +47,4 @@ public class ReferencedDescendantsMemberController : MemberControllerBase
 
         return pagedViewModel;
     }
-
-    /// <summary>
-    ///     Gets a page list of the child nodes of the current item used in any kind of relation.
-    /// </summary>
-    /// <remarks>
-    ///     Used when deleting and unpublishing a single item to check if this item has any descending items that are in any
-    ///     kind of relation.
-    ///     This is basically finding the descending items which are children in relations.
-    /// </remarks>
-    [HttpGet("{id:guid}/referenced-descendants")]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(typeof(PagedViewModel<ReferenceByIdModel>), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> ReferencedDescendants2(
-        CancellationToken cancellationToken,
-        Guid id,
-        int skip = 0,
-        int take = 20)
-    {
-        Attempt<PagedModel<RelationItemModel>, GetReferencesOperationStatus> relationItemsAttempt = await _trackedReferencesSkipTakeService.GetPagedDescendantsInReferencesAsync(id, UmbracoObjectTypes.Member, skip, take, true);
-
-        if (relationItemsAttempt.Success is false)
-        {
-            return GetReferencesOperationStatusResult(relationItemsAttempt.Status);
-        }
-
-        var pagedViewModel = new PagedViewModel<ReferenceByIdModel>
-        {
-            Total = relationItemsAttempt.Result.Total,
-            Items = _umbracoMapper.MapEnumerable<RelationItemModel, ReferenceByIdModel>(relationItemsAttempt.Result.Items),
-        };
-
-        return Ok(pagedViewModel);
-    }
 }

src/Umbraco.Cms.Api.Management/Controllers/MemberType/CopyMemberTypeController.cs

@@ -1,8 +1,7 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
-using Umbraco.Cms.Api.Management.ViewModels.MemberType;
 using Umbraco.Cms.Core;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Services;
@@ -20,23 +19,14 @@ public class CopyMemberTypeController : MemberTypeControllerBase
     public CopyMemberTypeController(IMemberTypeService memberTypeService)
         => _memberTypeService = memberTypeService;
 
-    [Obsolete("Please use the overload that includes all parameters. Scheduled for removal in Umbraco 19.")]
-    [NonAction]
-    public async Task<IActionResult> Copy(
-        CancellationToken cancellationToken,
-        Guid id) => await Copy(cancellationToken, id, null);
-
     [HttpPost("{id:guid}/copy")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(StatusCodes.Status201Created)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> Copy(
-        CancellationToken cancellationToken,
-        Guid id,
-        CopyMemberTypeRequestModel? copyMemberTypeRequestModel)
+    public async Task<IActionResult> Copy(CancellationToken cancellationToken, Guid id)
     {
-        Attempt<IMemberType?, ContentTypeStructureOperationStatus> result = await _memberTypeService.CopyAsync(id, copyMemberTypeRequestModel?.Target?.Id);
+        Attempt<IMemberType?, ContentTypeStructureOperationStatus> result = await _memberTypeService.CopyAsync(id, containerKey: null);
 
         return result.Success
             ? CreatedAtId<ByKeyMemberTypeController>(controller => nameof(controller.ByKey), result.Result!.Key)

src/Umbraco.Cms.Api.Management/Controllers/MemberType/ExportMemberTypeController.cs

@@ -1,44 +0,0 @@
-using Asp.Versioning;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc;
-using Umbraco.Cms.Api.Management.Factories;
-using Umbraco.Cms.Core.Models;
-using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Core.Services.OperationStatus;
-using Umbraco.Cms.Web.Common.Authorization;
-
-namespace Umbraco.Cms.Api.Management.Controllers.MemberType;
-
-[ApiVersion("1.0")]
-[Authorize(Policy = AuthorizationPolicies.TreeAccessMemberTypes)]
-public class ExportMemberTypeController : MemberTypeControllerBase
-{
-    private readonly IMemberTypeService _memberTypeService;
-    private readonly IUdtFileContentFactory _fileContentFactory;
-
-    public ExportMemberTypeController(
-        IMemberTypeService memberTypeService,
-        IUdtFileContentFactory fileContentFactory)
-    {
-        _memberTypeService = memberTypeService;
-        _fileContentFactory = fileContentFactory;
-    }
-
-    [HttpGet("{id:guid}/export")]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(typeof(FileContentResult), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public IActionResult Export(
-        CancellationToken cancellationToken,
-        Guid id)
-    {
-        IMemberType? memberType = _memberTypeService.Get(id);
-        if (memberType is null)
-        {
-            return OperationStatusResult(ContentTypeOperationStatus.NotFound);
-        }
-
-        return _fileContentFactory.Create(memberType);
-    }
-}

src/Umbraco.Cms.Api.Management/Controllers/MemberType/Folder/ByKeyMemberTypeFolderController.cs

@@ -1,25 +0,0 @@
-using Asp.Versioning;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc;
-using Umbraco.Cms.Api.Management.ViewModels.Folder;
-using Umbraco.Cms.Core.Security;
-using Umbraco.Cms.Core.Services;
-
-namespace Umbraco.Cms.Api.Management.Controllers.MemberType.Folder;
-
-[ApiVersion("1.0")]
-public class ByKeyMemberTypeFolderController : MemberTypeFolderControllerBase
-{
-    public ByKeyMemberTypeFolderController(
-        IBackOfficeSecurityAccessor backOfficeSecurityAccessor,
-        IMemberTypeContainerService memberTypeContainerService)
-        : base(backOfficeSecurityAccessor, memberTypeContainerService)
-    {
-    }
-
-    [HttpGet("{id:guid}")]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(typeof(FolderResponseModel), StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> ByKey(CancellationToken cancellationToken, Guid id) => await GetFolderAsync(id);
-}

src/Umbraco.Cms.Api.Management/Controllers/MemberType/Folder/CreateMemberTypeFolderController.cs

@@ -1,31 +0,0 @@
-using Asp.Versioning;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc;
-using Umbraco.Cms.Api.Management.ViewModels.Folder;
-using Umbraco.Cms.Core.Security;
-using Umbraco.Cms.Core.Services;
-
-namespace Umbraco.Cms.Api.Management.Controllers.MemberType.Folder;
-
-[ApiVersion("1.0")]
-public class CreateMemberTypeFolderController : MemberTypeFolderControllerBase
-{
-    public CreateMemberTypeFolderController(
-        IBackOfficeSecurityAccessor backOfficeSecurityAccessor,
-        IMemberTypeContainerService memberTypeContainerService)
-        : base(backOfficeSecurityAccessor, memberTypeContainerService)
-    {
-    }
-
-    [HttpPost]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(StatusCodes.Status201Created)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> Create(
-        CancellationToken cancellationToken,
-        CreateFolderRequestModel createFolderRequestModel)
-        => await CreateFolderAsync<ByKeyMemberTypeFolderController>(
-            createFolderRequestModel,
-            controller => nameof(controller.ByKey)).ConfigureAwait(false);
-}

src/Umbraco.Cms.Api.Management/Controllers/MemberType/Folder/DeleteMemberTypeFolderController.cs

@@ -1,25 +0,0 @@
-using Asp.Versioning;
-using Microsoft.AspNetCore.Http;
-using Microsoft.AspNetCore.Mvc;
-using Umbraco.Cms.Core.Security;
-using Umbraco.Cms.Core.Services;
-
-namespace Umbraco.Cms.Api.Management.Controllers.MemberType.Folder;
-
-[ApiVersion("1.0")]
-public class DeleteMemberTypeFolderController : MemberTypeFolderControllerBase
-{
-    public DeleteMemberTypeFolderController(
-        IBackOfficeSecurityAccessor backOfficeSecurityAccessor,
-        IMemberTypeContainerService memberTypeContainerService)
-        : base(backOfficeSecurityAccessor, memberTypeContainerService)
-    {
-    }
-
-    [HttpDelete("{id:guid}")]
-    [MapToApiVersion("1.0")]
-    [ProducesResponseType(StatusCodes.Status200OK)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
-    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
-    public async Task<IActionResult> Delete(CancellationToken cancellationToken, Guid id) => await DeleteFolderAsync(id);
-}