Document deprecation of advanced mode in apps (#2982)

Author: mdegat01

docs/api/supervisor/endpoints.md

@@ -114,7 +114,7 @@ Get details about an app
 
 | key                 | type               | description                                                                            |
 | ------------------- | ------------------ | -------------------------------------------------------------------------------------- |
-| advanced            | boolean            | `true` if advanced mode is enabled                                                     |
+| advanced            | boolean            | Deprecated and ignored; always `false` as of Supervisor 2026.03.0                      |
 | apparmor            | string             | disabled, default or the name of the profile                                           |
 | arch                | list               | A list of supported architectures for the app                                       |
 | audio               | boolean            | `true` if audio is enabled                                                             |

docs/api/supervisor/models.md

@@ -10,7 +10,7 @@ These models are describing objects that are getting returned from the superviso
 | ---------------- | -------------- | ----------------------------------------------------- |
 | name             | string         | The name of the app                                |
 | slug             | string         | The slug for the app                               |
-| advanced         | boolean        | `true` if it should only be visible to advanced users |
+| advanced         | boolean        | Deprecated and ignored; always `false` as of Supervisor 2026.03.0 |
 | description      | string         | The description of the app                         |
 | repository       | string         | The repository the app came from                   |
 | version          | string or null | The installed version of the app                   |

docs/apps/configuration.md

@@ -186,8 +186,7 @@ Avoid using `config.yaml` as filename in your app for anything other than the ap
 | `backup_pre` | string | | Command to execute in the context of the app before the backup is taken.
 | `backup_post` | string | | Command to execute in the context of the app after the backup was taken.
 | `backup_exclude` | list | | List of files/paths (with glob support) that are excluded from backups.
-| `advanced` | bool | `false` | Set this to `true` to require the user to have enabled "Advanced" mode for it to show.
-| `stage` | string | `stable` | Flag app with follow attribute: `stable`, `experimental` or `deprecated`. Apps set to `experimental` or `deprecated` will not show up in the store unless the user enables advanced mode.
+| `stage` | string | `stable` | Flag the app with one of the following attributes to give users an idea of its place in the development lifecycle: `stable`, `experimental` or `deprecated`. |
 | `init` | bool | `true` | Set this to `false` to disable the Docker default system init. Use this if the image has its own init system (Like [s6-overlay](https://github.com/just-containers/s6-overlay)). *Note: Starting in V3 of S6 setting this to `false` is required or the addon won't start, see [here](https://developers.home-assistant.io/blog/2022/05/12/s6-overlay-base-images) for more information.*
 | `watchdog` | string | | A URL for monitoring the app health. Like `http://[HOST]:[PORT:2839]/dashboard`, the port needs the internal port, which will be replaced with the effective port. It is also possible to bind the protocol part to a configuration option with: `[PROTO:option_name]://[HOST]:[PORT:2839]/dashboard` and it's looked up if it is `true` and it's going to `https`. For simple TCP port monitoring you can use `tcp://[HOST]:[PORT:80]`. It works for apps on the host or internal network.
 | `realtime` | bool | `false` | Give app access to host schedule including `SYS_NICE` for change execution time/priority.