I Wanted to Own the Harness. Then Codex Desktop Won

Jory Pestorious abandoned his self-built terminal agent stack and switched to Codex Desktop. He had argued for owning the tooling layer while renting models, but Codex's cross-device sync, visible task management, and low maintenance won his attention back. The post also dissects Prime Agent's RLM and memory claims, showing gaps between cited papers and actual implementation, and notes Ponytail cut code by 54% versus Haiku 4.5 in benchmarks.

Why it matters: A first-person tool comparison with concrete experiments and code-level dissection, not a generic review. Hits all three HKR axes, but remains a personal experience rather than an industry event, capping at the featured threshold.