Long-Horizon Dependability Beyond Single Sessions

Determine how the Claude Code architecture—comprising the agentic query loop, context construction and compaction, subagent delegation, and session persistence—can continue to support long-horizon dependability when autonomous work spans beyond a single session.

Background

The architecture centers on turn, session, and subagent units. As autonomous work extends to multi-session or multi-day programs (e.g., research workflows), it is unknown whether current mechanisms suffice or require new coordination primitives or memory substrates.

This question ties together earlier concerns about compaction limits, subagent isolation, and append-only persistence, now examined at horizon scales.

References

How the architecture documented in \Cref{sec:arch,sec:turn,sec:context,sec:subagent,sec:persist} (whose primary units are the turn, the session, and the sub-agent) continues to support long-horizon dependability as autonomous work extends beyond a single session is an open question.

— Dive into Claude Code: The Design Space of Today's and Future AI Agent Systems  (2604.14228 - Liu et al., 14 Apr 2026) in Section 12.4 (Horizon Scaling: From Session to Scientific Program)