Fix Complement `TestCanRegisterAdmin` with workers, by adding Complement's shared registration secret. (#12819)

Send `USER_IP` commands on a different Redis channel, in order to reduce traffic to workers that do not process these commands. (#12809)

Update EventContext `get_current_event_ids` and `get_prev_event_ids` to accept state filters and update calls where possible (#12791)

Signed-off-by: Sean Quah <seanq@matrix.org>

Lay some foundation work to allow workers to only subscribe to some kinds of messages, reducing replication traffic. (#12672)

Add a unique index to `state_group_edges` to prevent duplicates being accidentally introduced and the consequential impact to performance. (#12687)

Resolves: #11896

Signed-off-by: Aminda Suomalainen <suomalainen+git@mikaela.info>

Signed-off-by: Sami Olmari <sami@olmari.fi>

docbook doesn't auto-linkify links

If `StateFilter` specifies a state set which we will have regardless of
state-syncing, then we may as well return it immediately.

Refactor `resolve_state_groups_for_events` to not pull out full state when no state resolution happens. (#12775)

Signed-off-by: Sean Quah <seanq@matrix.org>

Co-authored-by: David Robertson <david.m.robertson1@gmail.com>

Give a meaningful error message when a client tries to create a room with an invalid alias localpart. (#12779)

The main differences are:
- values with delimiters (such as colons) should be quoted, so always
  quote the origin, since it could contain a colon followed by a port
  number
- should allow more than one space after "X-Matrix"
- quoted values with backslash-escaped characters should be unescaped
- names should be case insensitive

Signed-off-by: Adam Roddick <ajroddick@tuta.io>

Co-authored-by: Sean Quah <8349537+squahtx@users.noreply.github.com>