- Fix fragmentation algorithm violation: split last fragment into FE+regular blocks
- Add service packet support (headers 0xFC/0xFD) for control messages up to 256 bytes
- Add ETCP reset service packets (0x02/0x03) with 100ms retry and 10 attempt limit
- Add conn_reset() function for coordinated reset across connection components
- Add comprehensive test suite for all new features
- Update Makefile to build new test
- Implement queue_wait_threshold() with automatic waiter checking in ll_queue
- Add pkt_normalizer_flush() to force buffer sending
- Enhance test suite with async wait tests, fragmentation verification, and buffer flush tests
- Fix test edge cases by flushing packer buffer between subtests
- Improve test reliability with increased iteration limits and while loop processing
- Add connection module for secure UDP communication with ECC/AES-CCM cryptography
- Move all test files to tests/ directory
- Update Makefile to build tests in tests/ directory
- Add fragment reassembly timeout mechanism (500ms default)
- Add error count API (pkt_normalizer_get_error_count, pkt_normalizer_reset_error_count)
- Enhance error handling with timeout callbacks
- Add comprehensive stress tests and edge case tests
- Update .gitignore for build artifacts
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