Self-awareness loop: instrument all Claude tool calls, Deming PDCA explainer

- Hook: spai-toollog.sh logs every Claude tool call as JSONL (5ms jq)
- Analytics: read-claude-log merges tool call log into reflect
- Session detection uses real session IDs, not time-gap heuristic
- Explainer: round-trip animation shows repeating chains (3 passes)
- Explainer: PDCA loop section with 2x2 ring, Deming/Toyota andon reference
- Context bar: honest per-pass cost (~18%), compounding across repetitions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: lance-sp