- Fixed numerous ActiveSupport and ActiveRecord bugs: overlapping acronym inflections, insert/upsert log messages for anonymous classes, virtual column deduplication, SQLite and PostgreSQL schema dump issues, and handling of nil content ty...
- Improved resilience and correctness: restored instrumenter after async queries, better timeout handling in PostgreSQLAdapter, restored schema search path after reconnect, and fixed collection caching and eager loading with composite keys.
- Added a new configuration option `config.action_controller.live_streaming_excluded_keys` to control state sharing in ActionController::Live threads.