June 2025 monthly summary for tact-lang/tact: Implemented a targeted documentation clarification to address map literal usage, ensuring struct and message types are clearly marked as not supported within map literals and adding explicit notes on current limitations to prevent compilation errors and user confusion.

May 2025 performance highlights across quint and nearcore focused on debugging UX improvements and validator observability. Quint shipped a single-argument q::debug feature that prints the expression and its evaluated value, with tests and changelog/docs updates. Nearcore introduced granular metrics for validator roles, adding near_validator_block_producers_total and near_validator_chunk_validators_total, and deprecated repurposing near_validator_active_total for chunk producers. Overall, the work enhances production observability, improves debugging workflows, and lays groundwork for better capacity planning and alerting.