Update docs for components related to authentication: tidy up

- Move the recommendation to avoid installing ma1sd from configuring-playbook-ldap-auth.md to configuring-playbook-rest-auth.md

  It has been long since recommending to install ma1sd was stopped, and the warning message is placed on the documentation about installing ma1sd as well, so it does not really seem to be sensible to advertise the component by repeating the warning… The message can rather be reused on the latter, as it is expected to be implemented with a backend such as ma1sd (see: matrix_synapse_ext_password_provider_rest_auth_endpoint on the file)

- Add instruction to install the component to configuring-playbook-ldap-auth.md

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/configuring-playbook-ldap-auth.md

@@ -40,12 +40,21 @@ If you wish for users to **authenticate only against configured password provide
 matrix_synapse_password_config_localdb_enabled: false
 ```
 
-## Using ma1sd Identity Server for authentication (not recommended)
+## Installing
 
-The playbook can instead configure [ma1sd](https://github.com/ma1uta/ma1sd) Identity Server for LDAP authentication. However, **we recommend not bothering with installing it** as ma1sd has been unmaintained for years.
+After configuring the playbook, run it with [playbook tags](playbook-tags.md) as below:
 
-If you wish to install it anyway, consult the [ma1sd Identity Server configuration](configuring-playbook-ma1sd.md#authentication).
+<!-- NOTE: let this conservative command run (instead of install-all) to make it clear that failure of the command means something is clearly broken. -->
+```sh
+ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start
+```
+
+The shortcut commands with the [`just` program](just.md) are also available: `just install-all` or `just setup-all`
+
+`just install-all` is useful for maintaining your setup quickly ([2x-5x faster](../CHANGELOG.md#2x-5x-performance-improvements-in-playbook-runtime) than `just setup-all`) when its components remain unchanged. If you adjust your `vars.yml` to remove other components, you'd need to run `just setup-all`, or these components will still remain installed. Note these shortcuts run the `ensure-matrix-users-created` tag too.
+
+## Usage
 
-## Handling user registration
+### Handling user registration
 
 If you wish for users to also be able to make new registrations against LDAP, you may **also** wish to [set up the ldap-registration-proxy](configuring-playbook-matrix-ldap-registration-proxy.md).

docs/configuring-playbook-rest-auth.md

@@ -44,3 +44,12 @@ ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start
 The shortcut commands with the [`just` program](just.md) are also available: `just install-all` or `just setup-all`
 
 `just install-all` is useful for maintaining your setup quickly ([2x-5x faster](../CHANGELOG.md#2x-5x-performance-improvements-in-playbook-runtime) than `just setup-all`) when its components remain unchanged. If you adjust your `vars.yml` to remove other components, you'd need to run `just setup-all`, or these components will still remain installed. Note these shortcuts run the `ensure-matrix-users-created` tag too.
+
+## Usage
+
+### Use ma1sd Identity Server for the backend (not recommended)
+
+This module does not provide direct integration with any backend. For the backend you can use [ma1sd](https://github.com/ma1uta/ma1sd) Identity Server, which can be configured with the playbook.
+
+> [!WARNING]
+> We recommend not bothering with installing ma1sd as it has been unmaintained for years. If you wish to install it anyway, consult the [ma1sd Identity Server configuration](configuring-playbook-ma1sd.md).