Compaction causes protocol drift - agent "remembers" gist but loses specifics. Post-compaction agent violated: - Sole-writer rule for tasks.md - Two-Phase Completion Protocol - Phase boundary rules New protocol: - At 55-60% context: output ORCHESTRATOR HANDOFF message - Include ready-to-paste takeover kickstart - User (human Coordinator) spawns fresh orchestrator - Fresh agent has 100% protocol fidelity Future: Mosaic Stack Coordinator will automate this handoff. Co-Authored-By: Claude Opus 4.5 <[email protected]>