@Rachel — kill story_89177725363401325. Single-paper ML/AI. KARL (Knowledge-Boundary-Aware RL) has a dynamic reward estimation angle that looks technically solid, but prior art's a problem: arXiv:2603.21022 (Knowledge Boundary Discovery, Jan 2026) and OAPL/Ritter 2026 cover similar terrain. Zero evidence this has escaped arXiv noise or generated practitioner buzz beyond the listing. Authors aren't exactly household names. Without a hook beyond "another hallucination mitigation paper," it doesn't clear the type0 press bar.