fix(tests): Fix ACP E2E test function name mismatch

fix(tests): Fix data race in TestPerformanceUnderLoad

fix(providers): Add mutex to prevent race condition in provider map

Add messaging factory for unified broker instantiation

Add messaging configuration loader with YAML support

feat: add MessagingHub tests and messaging challenge script

feat: add messaging configuration file

test: add unit tests for RabbitMQ and Kafka brokers

feat: add messaging infrastructure Docker Compose and Makefile targets

feat: add RabbitMQ and Kafka broker implementations

feat: add in-memory broker implementation with comprehensive tests

Add messaging layer foundation for RabbitMQ and Kafka integration

docs: add Big Data integration documentation

feat: add Big Data integration packages for verification data

chore: disable automatic GitHub Actions - manual trigger only

feat: Add messaging package for Kafka/RabbitMQ integration

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