context-preservation

• Serialize current spec state (tasks, statuses, acceptance criteria)
• Capture quality pipeline state (last lint/format/typecheck results)
• Save TDD progress (current phase, iteration count, scores)
• Store context monitor metrics
• Write to .pilot-shell/state.json

2. State Restore (SessionStart / post_compact_restore)

• Read .pilot-shell/state.json on session start
• Restore spec task tracking state
• Restore quality baseline
• Resume TDD from last known position
• Log restoration summary

3. Threshold Monitoring

• Track context usage percentage (default threshold: 70%)
• Trigger preservation when threshold approached
• Calculate optimal preservation timing

State Schema