[AI-FSSDK] [FSSDK-12735] Add holdout exclusion logic for Targeted Delivery rules

[esrakartalOpt]

Summary

Implements holdout exclusion logic for Targeted Delivery rules. When a holdout's excludeTargetedDeliveries flag is true, users bucketed into that holdout will still be served Targeted Delivery (rollout) rules normally, while A/B Test and Multi-Armed Bandit experiment rules continue to be blocked by the holdout.

Changes

• Added excludeTargetedDeliveries field to the Holdout interface in shared types
• Updated resolveVariationForFlag to evaluate delivery rules when holdout has exclusion enabled, falling back to holdout decision if no delivery rule matches
• Added decision reason logging for when Targeted Delivery rules are excluded from holdout logic

Jira Ticket

FSSDK-12735

[coveralls]

coverage: 77.63% (-0.1%) from 77.725% — ai/esrakartalOpt/FSSDK-12735-exclude-targeted-delivery into master

[Copilot]

Pull request overview

Adds support for allowing Targeted Delivery (rollout) evaluation to continue even when a user is bucketed into a global holdout that opts into this behavior, while still enforcing holdout blocking for experiment rules. This is implemented by extending holdout types, updating flag-decision resolution to optionally bypass holdout blocking for rollouts, and emitting separate holdout impression events when a rollout decision is returned with holdout context.

Changes:

• Added excludeTargetedDeliveries?: boolean to the Holdout shared type.
• Updated DecisionService.resolveVariationForFlag to (optionally) evaluate rollout rules even when a holdout applies, attaching holdout context to the decision result.
• Added Optimizely decide-path logic and tests to dispatch a separate holdout impression when decisionObj.holdout is present.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
lib/shared_types.ts	Extends the Holdout type with excludeTargetedDeliveries.
lib/core/decision_service/index.ts	Implements holdout exclusion behavior and propagates holdout context alongside rollout decisions.
lib/core/decision_service/index.spec.ts	Adds coverage for excludeTargetedDeliveries behavior and local holdout behavior.
lib/optimizely/index.ts	Dispatches an additional holdout impression event when holdout context is present on a rollout decision.
lib/optimizely/index.spec.ts	Adds a test validating separate holdout impression dispatch for rollout decisions with holdout context.

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