Add support for the Sable client (Cinny fork)

docs/configuring-playbook-client-sable.md

@@ -0,0 +1,71 @@
+<!--
+SPDX-FileCopyrightText: 2022 MDAD project contributors
+SPDX-FileCopyrightText: 2024 - 2025 Suguru Hirahara
+SPDX-FileCopyrightText: 2024 - 2026 Slavi Pantaleev
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+-->
+
+# Setting up Sable (optional)
+
+The playbook can install and configure the [Sable](https://github.com/7w1/sable) Matrix web client for you.
+
+Sable is a web client focusing primarily on simple, elegant and secure interface. It can be installed alongside or instead of [Element Web](./configuring-playbook-client-element-web.md), [Cinny](./configuring-playbook-client-cinny.md) and others.
+
+## Adjusting DNS records
+
+By default, this playbook installs Sable on the `sable.` subdomain (`sable.example.com`) and requires you to create a CNAME record for `sable`, which targets `matrix.example.com`.
+
+When setting, replace `example.com` with your own.
+
+## Adjusting the playbook configuration
+
+To enable Sable, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
+
+```yaml
+sable_enabled: true
+```
+
+### Adjusting the Sable URL (optional)
+
+By tweaking the `sable_hostname` variable, you can easily make the service available at a **different hostname** than the default one.
+
+Example additional configuration for your `vars.yml` file:
+
+```yaml
+# Switch to a different domain (`app.example.com`) than the default one (`sable.example.com`)
+sable_hostname: "app.{{ matrix_domain }}"
+
+# Expose under the /sable subpath
+# sable_path_prefix: /sable
+```
+
+After changing the domain, **you may need to adjust your DNS** records to point the Sable domain to the Matrix server.
+
+**Note**: while there is a `sable_path_prefix` variable for changing the path where Sable is served, overriding it is [not possible](https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3701), because Sable requires an application rebuild (with a tweaked build config) to be functional under a custom path. You'd need to serve Sable at a dedicated subdomain.
+
+### Extending the configuration
+
+There are some additional things you may wish to configure about the component.
+
+Take a look at:
+
+- `roles/galaxy/sable/defaults/main.yml` for some variables that you can customize via your `vars.yml` file
+- `roles/galaxy/sable/templates/config.json.j2` for the component's default configuration. You can override settings (even those that don't have dedicated playbook variables) using the `sable_configuration_extension_json` variable
+
+## Installing
+
+After configuring the playbook and [adjusting your DNS records](#adjusting-dns-records), run the playbook with [playbook tags](playbook-tags.md) as below:
+
+<!-- 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.
+
+## Troubleshooting
+
+As with all other services, you can find the logs in [systemd-journald](https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html) by logging in to the server with SSH and running `journalctl -fu matrix-client-sable`.

docs/configuring-playbook.md

@@ -87,6 +87,8 @@ Web clients for Matrix that you can host on your own domains.
 
 - [Setting up Cinny](configuring-playbook-client-cinny.md), if you've enabled [Cinny](https://github.com/ajbura/cinny), a web client focusing primarily on simple, elegant and secure interface
 
+- [Setting up Sable](configuring-playbook-client-sable.md), if you've enabled [Sable](https://github.com/7w1/sable), a web client focusing primarily on simple, elegant and secure interface
+
 - [Setting up SchildiChat Web](configuring-playbook-client-schildichat-web.md), if you've enabled [SchildiChat Web](https://schildi.chat/), a web client based on [Element Web](https://element.io/) with some extras and tweaks
 
 - [Setting up FluffyChat Web](configuring-playbook-client-fluffychat-web.md), if you've enabled [FluffyChat Web](https://github.com/krille-chan/fluffychat), a cute cross-platform messenger (web, iOS, Android) for Matrix written in [Flutter](https://flutter.dev/)

docs/container-images.md

@@ -39,6 +39,7 @@ Web clients for Matrix that you can host on your own domains.
 | [Element Web](configuring-playbook-client-element-web.md) | [vectorim/element-web](https://hub.docker.com/r/vectorim/element-web/) | ✅ | Default Matrix web client, configured to connect to your own Synapse server |
 | [Hydrogen](configuring-playbook-client-hydrogen.md) | [element-hq/hydrogen-web](https://ghcr.io/element-hq/hydrogen-web) | ❌ | Lightweight Matrix client with legacy and mobile browser support |
 | [Cinny](configuring-playbook-client-cinny.md) | [ajbura/cinny](https://hub.docker.com/r/ajbura/cinny) | ❌ | Simple, elegant and secure web client |
+| [Sable](configuring-playbook-client-sable.md) | [7w1/sable](https://ghcr.io/7w1/sable) | ❌ | Simple, elegant and secure web client |
 | [SchildiChat Web](configuring-playbook-client-schildichat-web.md) | [etke.cc/schildichat-web](https://ghcr.io/etkecc/schildichat-web) | ❌ | Based on Element Web, with a more traditional instant messaging experience |
 
 ## Server Components

docs/self-building.md

@@ -30,6 +30,7 @@ Possibly outdated list of roles where self-building the Docker image is currentl
 - `matrix-client-element`
 - `hydrogen`
 - `cinny`
+- `sable`
 - `matrix-registration`
 - `coturn`
 - `matrix-corporal`