[CRE-491] Use moved mercury config.

[pavel-raykov]

Requires smartcontractkit/chainlink-data-streams#241

[github-actions]

I see you updated files related to core. Please run make gocs in the root directory to add a changeset as well as in the text include at least one of the following tags:

• #added For any new functionality added.
• #breaking_change For any functionality that requires manual action for the node to boot.
• #bugfix For bug fixes.
• #changed For any change to the existing functionality.
• #db_update For any feature that introduces updates to database schema.
• #deprecation_notice For any upcoming deprecation functionality.
• #internal For changesets that need to be excluded from the final changelog.
• #nops For any feature that is NOP facing and needs to be in the official Release Notes for the release.
• #removed For any functionality/config that is removed.
• #updated For any functionality that is updated.
• #wip For any change that is not ready yet and external communication about it should be held off till it is feature complete.

[github-actions]

✅ No conflicts with other open PRs targeting develop

[trunk-io]

     

View Full Report ↗︎ ⋅ Docs

[cl-sonarqube-production]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube

[Copilot]

Pull request overview

Risk Rating: HIGH — This PR changes a core configuration interface (Mercury) and threads the new type through multiple services/modules, coupled with a dependency bump that must align with an external upstream PR.

Changes:

• Bump github.com/smartcontractkit/chainlink-data-streams to v0.1.15-0.20260522094612-5f9f748bd87a across root/deployment/scripts/system/integration test modules and plugin manifest.
• Migrate Mercury config interface usage from core/config to chainlink-data-streams/llo/transmitter/de.
• Remove core/config/mercury_config.go (old Mercury config interface definitions) and update consumers/mocks accordingly.

Areas requiring scrupulous human review:

• All wiring points that pass cfg.Mercury() into relayers/registries/delegates (ensure the new de.Mercury interface exactly matches expectations of downstream users and that no runtime assumptions changed).
• core/services/relay/evm Mercury transmitter configuration flow (interface boundary changes + dependency bump can silently alter behavior).
• Ensure the required upstream PR (chainlink-data-streams#241) is merged and that the referenced pseudo-version contains the moved config API.

Reviewed changes

Copilot reviewed 18 out of 26 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
system-tests/tests/go.sum	Updates chainlink-data-streams checksum for system test module.
system-tests/tests/go.mod	Bumps indirect chainlink-data-streams dependency for system test module.
system-tests/lib/go.sum	Updates chainlink-data-streams checksum for system test lib module.
system-tests/lib/go.mod	Bumps indirect chainlink-data-streams dependency for system test lib module.
plugins/plugins.public.yaml	Updates streams plugin gitRef to the new chainlink-data-streams version.
plugins/loop_registry.go	Switches registry Mercury config type from core/config to de.Mercury.
plugins/loop_registry_test.go	Updates Mercury config mocks to use llo/transmitter/de interfaces.
plugins/cmd/chainlink-evm/main.go	Updates Mercury transmitter config interface usage to llo/transmitter/de.
integration-tests/load/go.sum	Updates chainlink-data-streams checksum for load tests module.
integration-tests/load/go.mod	Bumps indirect chainlink-data-streams dependency for load tests module.
integration-tests/go.sum	Updates chainlink-data-streams checksum for integration tests module.
integration-tests/go.mod	Bumps indirect chainlink-data-streams dependency for integration tests module.
go.sum	Updates root module chainlink-data-streams checksum.
go.mod	Bumps root module chainlink-data-streams dependency.
deployment/go.sum	Updates chainlink-data-streams checksum for deployment module.
deployment/go.mod	Bumps chainlink-data-streams dependency for deployment module.
core/services/relay/evm/evm.go	Points Mercury transmitter config types to llo/transmitter/de.
core/services/ocr2/delegate.go	Updates delegate config Mercury type and related interfaces to de.*.
core/services/chainlink/relayer_factory.go	Updates factory config to accept de.Mercury via llo/transmitter/de.
core/services/chainlink/mocks/general_config.go	Updates generated mock method signatures/returns for Mercury to de.Mercury.
core/services/chainlink/config_mercury.go	Updates Mercury config adapters to implement llo/transmitter/de interfaces.
core/services/chainlink/config_general.go	Updates Mercury() to return de.Mercury.
core/scripts/go.sum	Updates chainlink-data-streams checksum for scripts module.
core/scripts/go.mod	Bumps chainlink-data-streams dependency for scripts module.
core/config/mercury_config.go	Removes old Mercury config interfaces from core/config.
core/config/app_config.go	Updates AppConfig.Mercury() to return de.Mercury.

Files not reviewed (1)

• core/services/chainlink/mocks/general_config.go: Language not supported