Checkpoint — Save Session State

Snapshot the current session's progress to a YAML file so it can be restored after context compaction or in a new session. This is NOT a session log (narrative) or context save (profile/focus) — it's a machine-readable state dump for continuity.

When to Use

• Before a session is likely to hit context compression (many tool calls, long outputs)
• At phase boundaries in multi-phase work
• When the user says "save state", "checkpoint", "save progress"
• Proactively when you sense context is getting large — don't wait to be asked

When This Skill Is Invoked

Step 1: Gather State

Collect the following from the current conversation context: