June 2025 monthly summary for corda/corda focusing on core scheduling enhancement and thread pool segmentation. Key feature delivered: User-Defined Flow Scheduler Mappers and Configurable Thread Pool Management. Implemented new interfaces and annotations for flow scheduler mapping, added a concrete mapping implementation, and updated the Cordapp interface to accommodate mappers. This enables per-flow thread pool assignments, improving resource utilization, isolation, and predictability under mixed workloads. This work includes merging the segregated threadpools feature branch into 4.13 (#7949) as part of the release readiness. Major bugs fixed: none reported this month. Overall impact: enhances scalability and performance of flow execution, allowing operators to tune scheduling to business workloads and improve SLA adherence. Technologies/skills demonstrated: advanced Java/Kotlin architecture, interface/annotation design, modular plugin approach for schedulers, CI/review discipline, and branch management.