- Updated aitbc-core pyproject.toml with structlog and starlette dependencies
- Created middleware directory with 4 middleware files:
- RequestIDMiddleware for request correlation
- PerformanceLoggingMiddleware for performance tracking
- RequestValidationMiddleware for size validation
- ErrorHandlerMiddleware for standardized error responses
- Added structlog logging functions (configure_logging, get_logger) to aitbc-core
- Updated coordinator-api main.py to use aitbc-core middleware and logging
- Removed local middleware files from coordinator-api
- Removed app_logging.py from coordinator-api
- Added aitbc-core as workspace package to root pyproject.toml
This completes Phase 4.1: Extract shared utilities to aitbc-core
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