WPB-28665: remove ElasticSearch; query user search from Postgres - #5539
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ElasticSearch backed exactly one feature area: brig user indexing.
Delete the projection entirely and query brig's Postgres wire_user table
directly via a new UserSearchStore Polysemy effect.
New:
- Wire.UserSearchStore effect: searchUsers, searchUsersFederated,
paginateTeamMembers, getTeamSize, setTeamSearchVisibilityInbound
- Wire.UserSearchStore.Postgres interpreter porting the ES semantics:
shouldIndex candidate filter, documented swagger rank order, visibility
via team_search_visibility (default own-team-only), app exclusion,
tokenized prefix matching with LIKE escaping, keyset pagination
- Wire.UserSearch.Normalize (ICU Any-Latin;Latin-ASCII;Lower, formerly
the ES 'normalized' field) now stored in wire_user.name_normalized
- migration: name_normalized + text_pattern_ops indexes +
team_search_visibility table
- brig-index reduced to 'backfill-normalized-names' (run once before
cutover; pre-backfill rows lack name_normalized)
- in-memory mock for MiniBackend unit tests
Deleted:
- Wire.IndexedUserStore*, Wire.UserSearch.{Types,Migration,Metrics},
Wire.UserStore.IndexUser, GetIndexUser/GetIndexUsersPaginated store ops
- Brig.Index.*, Brig.User.Search.{Index,SearchIndex}, IndexEnv/mkIndexEnv
- ISearchIndexAPI routes (/i/index/*), galley updateSearchIndex push,
index-sync call sites, counter metrics
- bloodhound dependency, tools/db/find-undead, elasticsearch/kibana
charts, opensearch releases, dockerephemeral ES services, ES test
fixtures and ES-specific integration tests
Deployment: run `brig-index backfill-normalized-names --pg-settings ...`
after this migration and before search cutover.
Known env-only build failures (untouched packages): integration
Certs.hs (crypton-x509/pem solver skew), spar/federator/stern
integration exes (hidden Test.Hspec.JUnit), extended/saml2 (missing
shared libssl).
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blackheaven
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fisx
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Sep 14, 2026
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This would be awesome, but the ticket doesn't really say anything about re-architecting anything? Also, shouldn't we do some load testing before we merge this? Or maybe after, before the next release?
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https://wearezeta.atlassian.net/browse/WPB-28665
Checklist
changelog.d