WPB-24072 mount galley.yaml into background-worker

[battermann]

Checklist

• Add a new entry in an appropriate subdirectory of changelog.d
• Read and follow the PR guidelines

[Copilot]

Pull request overview

Moves Galley option/key handling into wire-subsystems and updates background-worker to load and reuse galley.yaml (plus related K8s config/secrets), removing duplicated Galley-related settings from background-worker configuration.

Changes:

• Rename Galley.Options/Galley.Keys to Wire.Options.Galley/Wire.Options.Keys and update imports/usages across Galley + tests.
• Update background-worker to accept/load a separate Galley config file and derive Cassandra/Postgres/federation-domain settings from it.
• Update Helm chart/templates and integration harness to mount/pass Galley config/secrets to background-worker; remove redundant background-worker values.

Reviewed changes

Copilot reviewed 44 out of 44 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
services/galley/test/integration/TestSetup.hs	Switch test imports from Galley.Options to Wire.Options.Galley.
services/galley/test/integration/TestHelpers.hs	Switch test imports from Galley.Options to Wire.Options.Galley.
services/galley/test/integration/Run.hs	Switch integration runner imports to Wire.Options.Galley.
services/galley/test/integration/Federation.hs	Switch imports to Wire.Options.Galley.
services/galley/test/integration/API/Util/TeamFeature.hs	Switch imports to Wire.Options.Galley.
services/galley/test/integration/API/Util.hs	Switch qualified options import to Wire.Options.Galley.
services/galley/test/integration/API/Teams/LegalHold/Util.hs	Switch imports to Wire.Options.Galley.
services/galley/test/integration/API/Teams.hs	Switch imports to Wire.Options.Galley.
services/galley/test/integration/API/SQS.hs	Switch imports to Wire.Options.Galley.
services/galley/test/integration/API/MLS/Util.hs	Switch imports from Galley.Options/Keys to Wire.Options.*.
services/galley/test/integration/API.hs	Switch imports to Wire.Options.Galley.
services/galley/src/Galley/Run.hs	Switch runtime options import to Wire.Options.Galley.
services/galley/src/Galley/Env.hs	Switch options import to Wire.Options.Galley.
services/galley/src/Galley/App.hs	Switch options/keys imports to Wire.Options.*.
services/galley/src/Galley/API/Update.hs	Switch options import to Wire.Options.Galley.
services/galley/src/Galley/API/Teams/Features.hs	Switch options import to Wire.Options.Galley.
services/galley/src/Galley/API/Teams.hs	Switch options import to Wire.Options.Galley.
services/galley/src/Galley/API/Message.hs	Switch options import to Wire.Options.Galley.
services/galley/src/Galley/API/LegalHold/Conflicts.hs	Switch options import to Wire.Options.Galley.
services/galley/src/Galley/API/Internal.hs	Switch options import and update lens chain to Wire.Options.Galley.
services/galley/src/Galley/API/Federation/Handlers.hs	Switch options import to Wire.Options.Galley.
services/galley/galley.cabal	Drop Galley.Options/Keys modules and crypto deps now housed in wire-subsystems.
services/galley/default.nix	Align Nix deps with moved options/keys implementation.
services/background-worker/src/Wire/BackgroundWorker/Options.hs	Remove duplicated Galley/Postgres/federation fields from background-worker options.
services/background-worker/src/Wire/BackgroundWorker/Env.hs	Build env using Galley opts for Cassandra/Postgres/federation-domain.
services/background-worker/src/Wire/BackgroundWorker.hs	Thread Galley opts through run.
services/background-worker/exec/Main.hs	Add CLI flag and config loading for a separate Galley config file.
services/background-worker/default.nix	Add optparse-applicative to executable deps.
services/background-worker/background-worker.integration.yaml	Remove duplicated Galley/Postgres/federation settings from sample integration config.
services/background-worker/background-worker.cabal	Add optparse-applicative dependency for the executable.
libs/wire-subsystems/wire-subsystems.cabal	Add deps + expose new Wire.Options.* modules.
libs/wire-subsystems/src/Wire/Options/Keys.hs	Rename module to Wire.Options.Keys.
libs/wire-subsystems/src/Wire/Options/Galley.hs	Rename module to Wire.Options.Galley and depend on Wire.Options.Keys.
libs/wire-subsystems/default.nix	Add deps for the moved keys/options modules.
libs/types-common/src/Util/Options.hs	Factor out decodeConfigFile helper and reuse it from getOptions.
integration/test/Testlib/ModService.hs	Start background-worker with both its config and a generated Galley config; clean up multiple temp paths.
hack/helmfile.yaml.gotmpl	Remove background-worker federationDomain value injection (now sourced from Galley).
hack/helm_vars/wire-server/values.yaml.gotmpl	Remove redundant background-worker Postgres/Galley Cassandra/federationDomain values.
charts/wire-server/values.yaml	Remove redundant background-worker Postgres/Galley Cassandra/federationDomain values and docs.
charts/wire-server/templates/background-worker/deployment.yaml	Mount Galley config/secret into background-worker pod; add checksums.
charts/wire-server/templates/background-worker/configmap.yaml	Remove Galley/Postgres/federationDomain config emission; adjust RabbitMQ CA cert path logic.
charts/wire-server/templates/background-worker/cassandra-secret.yaml	Remove background-worker Galley Cassandra secret (now sourced from Galley).
charts/wire-server/templates/_helpers.tpl	Remove background-worker-specific Galley TLS helper; add galley.tlsSecretRef.
changelog.d/0-release-notes/WPB-24072	Release note describing the config unification.

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[akshaymankar]

I think we should keep the flexibility of configuring the hasql pool differently for the bcakground-worker. Other comments are nits.

[Copilot]

Pull request overview

Copilot reviewed 45 out of 45 changed files in this pull request and generated 2 comments.

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