Session Guard

Overview

Long sessions corrupt silently. Context compaction drops instructions unannounced. Hooks don't fix it (confirmed by multiple developers on GitHub issues #19471, #9796, #64171). This skill prevents both through behavioral self-enforcement: monitor health, anchor critical rules through compaction, split before damage occurs. No packages, no databases - pure behavioral enforcement that works in every harness.

When to Use

• Session exceeds 40 tool calls
• Agent contradicts earlier decisions
• Style/naming conventions start drifting
• After any context compaction event
• Task scope growing unbounded

Health Signals