Protected rooms, watched policy lists, protection settings and the set of
users allowed to command a bot all belong to a management room rather than
to the bot, and a room can be protected from only one of them. That is what
makes it possible to delegate a single room to another moderator without
handing over power in every other protected room, so it is worth spelling
out, along with what such a split does not cover: the variables naming one
management room, and policy lists shared through subscriptions.

Adding a second management room also means declaring the rooms of a bot
which had been auto-creating its own, which is a step with a sharp edge:
once the bot is no longer auto-creating, any of its rooms missing from the
declaration is unregistered. Document that path and warn about it.

Also drop a note describing "!lists subscribe --insert-before" as a future
release. The role has shipped a version carrying it since v0.2608.0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

The homeserver only reads appservice registrations on startup, and the
playbook only restarts it at the very end of a run. On the run which
first enables Meowlnir, bot provisioning therefore talked to a
homeserver still running without Meowlnir's registration, hitting
M_UNKNOWN_TOKEN and hanging indefinitely.

Provisioning now verifies the token upfront and restarts the homeserver
itself when needed, so a single run completes even when Meowlnir was
just enabled.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Asks the homeserver who Meowlnir's appservice token belongs to.
A 401 (M_UNKNOWN_TOKEN) response means the homeserver is running
without Meowlnir's appservice registration, which is the usual cause
of Meowlnir's "Failed to connect to homeserver" log messages.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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>