throughline — Handoff (distillation)

Goal: Turn a session's raw, continuously-captured actions into curated, durable project memory. Capture is automatic (hooks); distillation is this skill — the judgment layer that decides signal vs. noise.

Data directory (resolve once): $THROUGHLINE_DATA_DIR if set, else <project-root>/.claude/throughline/. Below, DATA refers to that path.

• Durable handoff: DATA/HANDOFF.md
• Session logs: DATA/logs/handoff-YYYY-MM-DD-HHMM.md
• Raw capture buffers: DATA/buffer/session-<id>.md

When to run (including proactively)