fix(agents): export EVALUATION_RULE_REPOSITORY from AgentsModule

The AdminEvaluationRuleController in ConversationModule needs the
EVALUATION_RULE_REPOSITORY token. Even though AgentsModule is @Global(),
Symbol-based providers must be explicitly exported to be available
in other modules.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/services/conversation-service/src/infrastructure/agents/agents.module.ts

@@ -108,6 +108,7 @@ const AnthropicClientProvider = {
   exports: [
     CoordinatorAgentService,
     EvaluationGateService,
+    EVALUATION_RULE_REPOSITORY,
     // Export specialists for potential direct use
     PolicyExpertService,
     AssessmentExpertService,