Changes:
- ll_queue callback now receives only queue pointer and arg (no data)
- Added log_dump and addr_to_string utility functions
- Removed temporary backup files
- Updated AGENTS.md with additional guidelines
- Fixed compiler warnings in etcp.c and pkt_normalizer.c
- Change xxx from 1 to 0, fixing pointer arithmetic in queue_resume_timeout_cb
- Update comments: callback receives struct ll_entry* not user data
- Rename payload field to data in struct ll_entry
- etcp: fix INFLIGHT_PACKET to ACK_PACKET type in etcp_conn_input
- debug: remove excessive DEBUG_ERROR/DEBUG_DEBUG messages
- tests: rewrite test_ll_queue.c for new architecture
- Fixed incorrect init_connections() call in test_etcp_simple_traffic.c (was calling server_instance instead of client_instance)
- Fixed double free in timeout_heap_pop() when handling deleted elements
- Enhanced NULL pointer safety in uasync_print_resources() by removing complex heap manipulation
- Added debug logging to timeout_heap_pop() for better error tracking
Test results: test_etcp_simple_traffic now passes without double free errors
Evgeny