Summary

In crates/zeph-core/src/agent/context/summarization.rs, summarize_messages_with_budget loads compression guidelines at line 1303, and then summarize_messages internally loads them again at ~line 367 when called via the multi-chunk fallback at line 1355. This results in two SQLite queries for the same data.

Fix

Load guidelines once in summarize_messages_with_budget and pass them as a parameter to summarize_messages, or cache them at the call site.

Not a correctness issue; acceptable for now.

Identified by code reviewer (REVIEW-10) during ACON compression guidelines PR (#1647) review.