Add support for Meowlnir

Meowlnir (https://github.com/maunium/meowlnir) is a Matrix moderation
bot which speaks the same policy-list protocol as Mjolnir and Draupnir,
but runs as an appservice and can override individual policies coming
from ban lists you do not control.

Bots and their management rooms live only in Meowlnir's own database —
nothing in its configuration file can declare one — so the role
provisions them through the management API from a declarative roster
(matrix_bot_meowlnir_bots_custom), applied under the
ensure-matrix-users-created tag. Management rooms may be declared or
created for you; bots and rooms no longer declared get pruned.

Wrapper scripts for driving the management API by hand are installed
to /matrix/meowlnir/bin.

Meowlnir re-runs its configuration upgrader in memory on every start,
so a literal `generate` value yields a new secret per restart. All
secrets are therefore rendered explicitly, validation rejects
`generate`, and the configuration directory is mounted read-only.

Draupnir and Meowlnir both want synapse-http-antispam, which the
playbook wires up to a single consumer. The wiring prefers Draupnir,
and both roles fail the run when each claims it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Slavi Pantaleev
2026-08-13 06:05:30 +03:00
co-authored by Claude Opus 5
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# 2026-08-13
## Support for Meowlnir
The playbook can now install [Meowlnir](https://github.com/maunium/meowlnir), an opinionated Matrix moderation bot, optimized for Synapse.
Meowlnir joins [Draupnir](docs/configuring-playbook-bot-draupnir.md) and [Mjolnir](docs/configuring-playbook-bot-mjolnir.md) as a 3rd moderation option, speaking the same [policy list](https://the-draupnir-project.github.io/draupnir-documentation/concepts/policy-lists) protocol so that it can subscribe to the same community ban lists. Unlike the others, it can override individual policies coming from lists you do not control (by way of an unban policy in a list of your own which is ordered ahead of other policy lists).
You can run it alongside Draupnir while evaluating it — see the documentation for the caveats, the main one being that both want the [synapse-http-antispam](https://github.com/maunium/synapse-http-antispam) module, which only reports to a single consumer.
To get started, see the [Setting up Meowlnir](docs/configuring-playbook-bot-meowlnir.md) documentation page.
# 2026-08-06
## (Backward Compatibility Break) Jitsi no longer uses Colibri WebSockets