Recapture live muse exec --json with tools; implement extractToolEvent/extractThinking #877

Follow-up to #873 / PR #876. Echo fixtures have no tool or thinking events, so extractToolEvent/extractThinking are stubs and the transcript has no tool cards.

With META_API_KEY or a stored muse login, recapture muse exec --json (not --provider echo) that actually calls tools. Save under electron/test/fixtures/muse/ (spark-tools.jsonl). Update CAPTURE.md with tool payload_type names and aliases. Then implement extractToolEvent/extractThinking against those fixtures, add parser tests, and a fake-bin runner test that replays the capture. Do not invent JSONL from the muse-codes crate. Do not use --yolo. Spec: docs/superpowers/specs/2026-09-03-muse-code-provider-design.md.