Abstract
Through a forensic audit of 11 real-world multi-agent production trajectories comprising 9,165 trajectory records, 71 auto-compaction checkpoints, and 115 hook enforcement events, we expose both lossy compaction amnesia and six critical failure/exploit modes of naive raw-transcript recovery hooks—including the Auto-Compaction Death Spiral, the 46,080-byte silent truncation blindspot, ByteOffset overflow injection, micro-range probing, cross-session UUID path spoofing, and Undo/digest-body error collisions. We introduce AMCG-3, combining UTF-8 byte-bounded trajectory digest synthesis (-98.1% to -99.6% payload bloat reduction, 0.0% tool truncation) with a header-isolated anti-bypass hook lock and an adaptive 3-Gear Multimodal Quality Gate across Media, Web/UI, and Binary Crash Safety.
Research Portal: HQAS-8 Hub • Scientist HM Shihabuddin Jashory & Researcher MD Rafiul Islam Shubho • Hugging Face Space • Benchmark Dataset • llms.txt • Vision Flow Group