Replaces `community.docker.docker_image` with the modern
`docker_image_pull` and `docker_image_build` split modules across all
four task files (synapse, reverse_proxy_companion, goofys,
rust-synapse-compress-state). Drops the `ansible_version` compatibility
ladder and removes four `_container_image_force_pull` variables (the new
pull module handles registry refresh natively via `pull: always`).

The Synapse self-build path uses `ansible.builtin.shell` for BuildKit
support and is left as-is. The customizations image build (which builds
on top of the locally-tagged synapse image) is converted to
`docker_image_build` with `pull: false`, preserving its existing
rebuild-trigger semantics.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/5191.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Synapse v1.152 introduces a new `quarantined_media_changes` stream and
requires that any worker serving `/_synapse/admin/v1/quarantine_media/`
be declared as a writer for that stream. Otherwise quarantining media
fails on the worker.

Add `quarantined_media_changes` as a web-facing stream writer alongside
the other stream-backed APIs and route the admin endpoint via the same
explicit writer-or-main model used for `device_lists`, `thread_subscriptions`,
etc. The endpoint is removed from `matrix_synapse_workers_media_repository_endpoints`
so the old media-repository route does not shadow (or conflict with) the
new writer-or-main route. Without that move, the previously-shipping
default of routing `/quarantine_media` to the `media_repository` worker
would silently break after the v1.152.0 image bump.

Default count is 1 in the `one-of-each` and `specialized-workers` presets
(matching `device_lists`), and 0 in `little-federation-helper` (which
also has no media-repository worker, so falling back to main is fine).

Refs:
- https://github.com/element-hq/synapse/blob/develop/docs/upgrade.md#upgrading-to-v11520
- https://element-hq.github.io/synapse/latest/workers.html#the-quarantined_media_changes-stream

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Register env, database config, scripts, and systemd service/timer results,
compute matrix_synapse_s3_storage_provider_restart_necessary, and wire it
into group_vars/matrix_servers instead of hardcoding restart_necessary: true.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Register image pull, env, and systemd service results, compute
matrix_goofys_restart_necessary, and wire it into group_vars/matrix_servers
instead of hardcoding restart_necessary: true.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Add support for all server_notices settings documented by Synapse:
- room_avatar_url: optional avatar for the server notices room
- room_topic: optional topic for the server notices room
- auto_join: whether users are auto-joined instead of invited (default: false)

Signed-off-by: Norman Ziegner <n.ziegner@hzdr.de>

Expose Synapse's `msc4306_enabled` experimental flag as a first-class MDAD
variable and wire it into `homeserver.yaml` alongside the other experimental
feature toggles.

This makes thread-subscriptions support explicit in playbook configuration,
rather than requiring operators to inject the upstream flag via raw
`matrix_synapse_configuration_extension_yaml`.

The variable intentionally controls only the Synapse feature flag. It does not
change the default `thread_subscriptions` worker count, which remains `0` in the
standard presets. Keeping those as separate choices avoids auto-starting an
experimental worker just because the upstream feature toggle is enabled.

Refs:
- b99a58719b/synapse/config/experimental.py (L600-L602)
- b99a58719b/synapse/rest/client/versions.py (L183-L184)

Add `thread_subscriptions` as a supported web-facing stream writer in MDAD and
route its unstable client endpoints via the same explicit writer-or-main model
used for the other web-facing stream-backed APIs.

This is not just another generic worker route. Current Synapse gives thread
subscriptions their own `writers.thread_subscriptions` configuration, backs them
with a multi-writer stream, and asserts on store writes that the current
instance is an allowed thread-subscriptions writer.

Explicit early routing is also required here because the subscription endpoint is
room-scoped. In MDAD's specialized-worker model, the existing room-worker regex
would otherwise match `/_matrix/client/unstable/io.element.msc4306/rooms/...`
and steal the request before it reached the correct writer-or-main fallback.

Unlike `device_lists`, support is added without enabling a thread-subscriptions
worker by default in the standard presets. The underlying MSC4306/4308 feature
remains unstable and disabled by default upstream, so the conservative default
is to keep the worker count at `0` and let the new explicit routes fall back to
`main` unless an operator opts in.

Refs:
- b99a58719b/synapse/config/workers.py (L175-L182)
- b99a58719b/synapse/rest/client/thread_subscriptions.py (L38-L247)
- b99a58719b/synapse/storage/databases/main/thread_subscriptions.py (L66-L83)
- b99a58719b/synapse/storage/databases/main/thread_subscriptions.py (L192-L322)

MDAD keeps `/_synapse/client/*` out of the broad worker-routing model.
Those paths are mounted by current Synapse on client-serving workers, but MDAD's
worker route buckets only match `/_matrix/client/*`, so `/_synapse/client/*`
requests already fall through to the main-process default.

That made the `/_synapse/client/*` branches in the dedicated SSO override regex
redundant. Remove those branches and leave the explicit SSO override focused on
the real `/_matrix/client/.../login/sso/redirect` path family, which would
otherwise be caught by the broad `/login` client-reader routing.

This also removes duplicated ownership of `login/sso/redirect` from the generic
main-override regex so the dedicated SSO override is the single place that
models that path.

Refs:
- b99a58719b/synapse/app/generic_worker.py (L197-L203)
- b99a58719b/synapse/rest/synapse/client/__init__.py (L39-L90)
- b99a58719b/synapse/rest/client/login.py (L636-L643)

Add the unstable MSC3814 dehydrated-device endpoints to both MDAD
worker-routing models:

- the specialized client_reader bucket
- the broad generic_worker route list

This is not a docs-driven change. Current workers.md does not meaningfully
spell out these paths, but the current Synapse code does mount them via the
normal devices servlet registration path, and non-main client workers do not
skip that servlet group.

That makes these endpoints a good fit for the same worker buckets that already
handle the surrounding device- and E2EE-related client APIs.

Refs:
- b99a58719b/docs/workers.md (synapseappgeneric_worker)
- b99a58719b/synapse/rest/client/devices.py (L256-L459)
- b99a58719b/synapse/rest/__init__.py (L81-L129)
- b99a58719b/synapse/rest/__init__.py (L179-L197)

The client_reader route bucket had collapsed into one long alternation,
which made small worker-audit edits hard to review. Any endpoint change
rewrote the whole regex and obscured whether we were changing routing
policy or just maintaining the route list.

Refactor the variable into grouped regex entries with comments instead.
This keeps the current specialized-worker policy intact: nginx still
renders the client_reader locations in the same block, and the routes
still target the same upstream bucket. The goal here is to make future
doc/code audits, additions, and removals mechanical and reviewable.

This also matches MDAD's current worker model, where generic workers are
not mixed with the specialized room/sync/client/federation reader
routing buckets, so there is no need to derive this from the generic
worker map.

Refs:
- b99a58719b/docs/workers.md (historical-apps)
- b99a58719b/docs/workers.md (synapseappgeneric_worker)

Current Synapse registers the MatrixRTC transport discovery endpoint on
client-serving workers when MSC4143 is enabled, but MDAD does not model
that path in either its client-reader bucket or its broader generic-
worker endpoint list.

Add the unstable MatrixRTC transport discovery route so MDAD's worker
routing matches the current upstream worker surface for this endpoint.
This is a small, isolated routing addition for a simple authenticated
GET endpoint.

Refs:
- b99a58719b/synapse/rest/client/matrixrtc.py (L30-L52)
- b99a58719b/synapse/rest/__init__.py (L81-L129)
- b99a58719b/synapse/rest/__init__.py (L179-L197)

Current Synapse still documents and registers
`/_matrix/client/.../account/deactivate` on client-serving workers when
auth is not delegated. MDAD already routes neighboring account endpoints
such as `account/3pid` and `account/whoami`, but it omitted
`account/deactivate` from both its client-reader bucket and its broader
generic-worker endpoint list.

Add the missing route patterns so MDAD's worker routing matches the
current upstream worker surface in non-delegated-auth deployments. In
MAS / MSC3861 mode the endpoint is not registered upstream anyway, so
this does not expand the effective delegated-auth surface.

Refs:
- b99a58719b/docs/workers.md (synapseappgeneric_worker)
- b99a58719b/synapse/rest/client/account.py (L284-L324)
- b99a58719b/synapse/rest/client/account.py (L913-L920)

Synapse currently supports both the deprecated
`/_matrix/client/unstable/im.nheko.summary/rooms/<room>/summary`
route and the recommended
`/_matrix/client/unstable/im.nheko.summary/summary/<room>`
form. MDAD only matched the deprecated shape.

Add the recommended pattern alongside the old one so worker routing
matches the current upstream API surface while preserving backward
compatibility for the deprecated path.

Refs:
- b99a58719b/docs/workers.md (synapseappgeneric_worker)
- b99a58719b/synapse/rest/client/room.py (L1716-L1728)

Current Synapse no longer exposes device management under
`/_matrix/client/.../account/devices`. The live client API shape is
`/devices`, `/devices/{device_id}`, and `/delete_devices`, and
MDAD already routes those real device-list-sensitive endpoints through
explicit device-list handling.

Keeping `account/devices` in the old client-reader regex therefore only
preserves stale route-model residue. While touching the same area,
refresh the `/_synapse/client/*` comment to reflect current Synapse:
client-serving generic workers now mount a meaningful Synapse-specific
client tree there, but MDAD still intentionally keeps those paths out of
its broad worker regexes because they are deployment-sensitive and
auth-sensitive.

Refs:
- b99a58719b/docs/workers.md (historical-apps)
- b99a58719b/synapse/rest/client/devices.py (L49-L150)
- b99a58719b/synapse/rest/synapse/client/__init__.py (L39-L88)

Some client API endpoints (e.g. keys/upload) are backed by Synapse stream writers and
should not rely on broad worker regexes or route-order fallthrough for correctness.

When explicit per-stream routing is missing, requests may be captured by generic, room, or client_reader workers, instead of:
- going to the configured stream writer
- or to `main` when that stream writer is not enabled

This refactors synapse-reverse-proxy-companion's routing so that web-facing stream-backed endpoint families
are handled explicitly and early, with deterministic writer-or-main fallback.

Add first-class support for the missing `device_lists` stream writer,
generalize the same routing model to `push_rules`,
and remove stale broad-route ownership for device-list-sensitive endpoints.

Add matrix_synapse_ext_password_provider_ldap_tls_options_ca_certs_file
variable to allow specifying a custom CA certificate file for LDAP TLS
verification. Useful when Synapse is running in a container that does not
trust a private/internal CA by default.

Example usage:
matrix_synapse_ext_password_provider_ldap_tls_options_ca_certs_file: /etc/ssl/certs/my-ca.crt

OTW many empty dirs are kept

This was causing issues when it's parsed out by certain tools.

Regression since 28afbde971

The companion role was tightly coupled to Synapse through shared tags, worker routing, and lifecycle ordering. Keeping them separate added coordination overhead without practical benefits, especially for parallelized execution.

This merges the role into matrix-synapse while keeping companion logic organized under dedicated reverse_proxy_companion task/template subdirectories.

Compatibility is preserved:
- matrix_synapse_reverse_proxy_companion_* variable names remain unchanged
- install/setup companion-specific tags remain available

Cross-role/global wiring is now in group_vars (matrix-synapse section), while role defaults provide sensible standalone defaults and self-wiring for Synapse-owned values.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

These three roles have multiple variable prefixes each:
- kakaotalk: matrix_appservice_kakaotalk + matrix_appservice_kakaotalk_node
- telegram: matrix_mautrix_telegram + matrix_mautrix_telegram_lottieconverter
- synapse: matrix_synapse + matrix_synapse_customized + matrix_synapse_rust_synapse_compress_state

For each: renamed _docker_image* to _container_image* (and _docker_src*,
_docker_repo* where applicable), added deprecation entries in
validate_config.yml, updated group_vars references, and moved
deprecation tasks to the front of validate_config.yml.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>