This skill should be used when the user asks to "save context", "remember this decision", "track my progress", "checkpoint my work", "resume where I left off", "continue from last session", "persist state across sessions", "prepare for compaction", "restore from checkpoint", "switch sessions", or when starting work and needing to check for existing sessions. Also triggers on compound workflows like "wrap up session", "wrap up and checkpoint", "end of day checkpoint", "resume fully", "pick up where I left off and show status", "checkpoint with tags", "log work and checkpoint", "tag and checkpoint", "prepare for handoff", "handoff to another agent".