Common tasks: remove configuration check include file

- with Supervisor and Core gone, there is no longer and reuse
- move remaining steps into OS and Container file instead

As per architecture discussion on

home-assistant/architecture#1197,
and home-assistant/architecture#1198

https://www.home-assistant.io/blog/2025/05/22/deprecating-core-and-supervised-installation-methods-and-32-bit-systems

source/_includes/common-tasks/configuration_check.md

@@ -1,109 +0,0 @@
-## Configuration check
-
-{% if page.installation == "os" or page.installation == "supervised" %}
-
-After changing configuration or automation files, check if the configuration is valid before restarting Home Assistant Core.
-
-### Running a configuration check from the UI
-
-1. Go to {% my profile title="your user profile" %} and enable **Advanced Mode**.
-2. Go to {% my server_controls title="**Developer tools** > **YAML**" %} and in the **Configuration validation** section, select the **Check configuration** button.
-   - This is to make sure there are no syntax errors before restarting Home Assistant.
-   - It checks for valid {% term YAML %} and valid config structures.
-3. If you need to do a more comprehensive configuration check, [run the check from the CLI](#to-run-a-configuration-check-from-the-cli).
-
-### Running a configuration check from the CLI
-
-Use the following command to check if the configuration is valid. The command line configuration check validates the {% term YAML %} files and checks for valid config structures, as well as some other elements.
-
-```bash
-ha core check
-```
-
-{% elsif page.installation == "container" %}
-
-After changing configuration files, check if the configuration is valid before restarting Home Assistant Core.
-
-_If your container name is something other than `homeassistant`, change that part in the examples below._
-
-Run the full check:
-
-```bash
-docker exec homeassistant python -m homeassistant --script check_config --config /config
-```
-
-Listing all loaded files:
-
-```bash
-docker exec homeassistant python -m homeassistant --script check_config --files
-```
-
-Viewing an integration’s configuration ([`light`](/integrations/light) in this example):
-
-```bash
-docker exec homeassistant python -m homeassistant --script check_config --info light
-```
-
-Or all integrations’ configuration
-
-```bash
-docker exec homeassistant python -m homeassistant --script check_config --info all
-```
-
-You can get help from the command line using:
-
-```bash
-docker exec homeassistant python -m homeassistant --script check_config --help
-```
-
-{% elsif page.installation == "core" %}
-
-After changing configuration files, check if the configuration is valid before restarting Home Assistant Core.
-
-1. Switch to the user that is running Home Assistant.
-
-    ```bash
-    sudo -u homeassistant -H -s
-    ```
-
-2. Activate the virtual environment that Home Assistant is running in.
-
-    ```bash
-    source /srv/homeassistant/bin/activate
-    ```
-
-3. Run the configuration check.
-
-    Run the full check:
-
-    ```bash
-    hass --script check_config
-    ```
-
-    Listing all loaded files:
-
-    ```bash
-    hass --script check_config --files
-    ```
-
-    Viewing a integration’s configuration ([`light`](/integrations/light) in this example):
-
-    ```bash
-    hass --script check_config --info light
-    ```
-
-    Or all integrations’ configuration
-
-    ```bash
-    hass --script check_config --info all
-    ```
-
-    You can get help from the command line using:
-
-    ```bash
-    hass --script check_config --help
-    ```
-
-4. When that is complete, restart the service for it to use the new files.
-
-{% endif %}

source/common-tasks/container.markdown

@@ -14,4 +14,39 @@ To learn how to back up the system or how to restore a system from a backup, ref
 {% include common-tasks/specific_version.md %}
 {% include common-tasks/beta_version.md %}
 {% include common-tasks/development_version.md %}
-{% include common-tasks/configuration_check.md %}
+
+## Configuration check
+
+After changing configuration files, check if the configuration is valid before restarting Home Assistant Core.
+
+_If your container name is something other than `homeassistant`, change that part in the examples below._
+
+Run the full check:
+
+```bash
+docker exec homeassistant python -m homeassistant --script check_config --config /config
+```
+
+Listing all loaded files:
+
+```bash
+docker exec homeassistant python -m homeassistant --script check_config --files
+```
+
+Viewing an integration’s configuration ([`light`](/integrations/light) in this example):
+
+```bash
+docker exec homeassistant python -m homeassistant --script check_config --info light
+```
+
+Or all integrations’ configuration
+
+```bash
+docker exec homeassistant python -m homeassistant --script check_config --info all
+```
+
+You can get help from the command line using:
+
+```bash
+docker exec homeassistant python -m homeassistant --script check_config --help
+```

source/common-tasks/os.markdown

@@ -96,7 +96,26 @@ Alternatively, if the Operating Systems runs on a platform that uses the GRUB bo
 {% include common-tasks/network_storage.md %}
 {% include common-tasks/lost_password.md %}
 {% include common-tasks/third-party-addons.md %}
-{% include common-tasks/configuration_check.md %}
+
+## Configuration check
+
+After changing configuration or automation files, check if the configuration is valid before restarting Home Assistant Core.
+
+### Running a configuration check from the UI
+
+1. Go to {% my profile title="your user profile" %} and enable **Advanced Mode**.
+2. Go to {% my server_controls title="**Developer tools** > **YAML**" %} and in the **Configuration validation** section, select the **Check configuration** button.
+   - This is to make sure there are no syntax errors before restarting Home Assistant.
+   - It checks for valid {% term YAML %} and valid config structures.
+3. If you need to do a more comprehensive configuration check, [run the check from the CLI](#to-run-a-configuration-check-from-the-cli).
+
+### Running a configuration check from the CLI
+
+Use the following command to check if the configuration is valid. The command line configuration check validates the {% term YAML %} files and checks for valid config structures, as well as some other elements.
+
+```bash
+ha core check
+```
 
 ## Home Assistant versions