feat: reintroduce the mock streams trigger on develop

[cawthorne]

Summary

• forward-port the Aptos-init mock streams trigger onto develop
• gate registration behind an explicit local capability config entry so it stays test-only
• keep the dummy metadata registry F=1 behavior needed by the legacy workflow smoke path
• add focused tests for the gate and the mock trigger lifecycle/event path

Testing

• GOWORK=off go test ./core/capabilities/streams -run 'TestMockTriggerService|TestStreamsTrigger' -count=1
• GOWORK=off go test ./core/services/chainlink -run TestShouldRegisterMockStreamsTrigger -count=1

[github-actions]

✅ No conflicts with other open PRs targeting develop

[trunk-io]

     

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[Copilot]

Pull request overview

Risk Rating: MEDIUM

This PR forward-ports a test-only “mock streams trigger” into develop, gating it behind an explicit [Capabilities.Local] config entry so it’s opt-in, and adjusts the local CRE test metadata registry to preserve a legacy F=1 compatibility path when the mock trigger is enabled.

Changes:

• Add optional registration of the mock streams trigger based on local capability config.
• Introduce a mock streams trigger implementation that emits signed mock reports and supports trigger lifecycle (register/emit/unregister).
• Add/adjust local CRE test metadata registry behavior to advertise WorkflowDON.F=1 only when the mock trigger is opted in, with focused tests.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
core/services/standardcapabilities/local_capabilities.go	Adds gating + optional mock trigger registration helper.
core/services/standardcapabilities/local_capabilities_test.go	Unit tests for the gating logic.
core/services/standardcapabilities/delegate.go	Calls optional registration during delegate construction and propagates init errors.
core/services/cre/cre.go	Uses a helper to build a local TestMetadataRegistry with conditional WorkflowDONF.
core/services/cre/cre_test.go	Tests that the conditional WorkflowDONF override is applied.
core/capabilities/streams/mock_trigger.go	Implements the mock trigger service and report/signature generation loop.
core/capabilities/streams/mock_trigger_test.go	Tests mock trigger lifecycle and event emission path.
core/capabilities/registry.go	Adds configurable WorkflowDONF in TestMetadataRegistry and uses it in LocalNode().
core/capabilities/registry_test.go	Tests that WorkflowDONF is respected.

Targeted areas for scrupulous human review:

• core/capabilities/streams/mock_trigger.go: trigger lifecycle and internal state management (RegisterTrigger/UnregisterTrigger, background loop + Close semantics).
• core/services/standardcapabilities/delegate.go: impact of initErr gating on job startup behavior when optional registration fails.

[cl-sonarqube-production]

Quality Gate passed

Issues
1 New issue
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube