backtest/research/cycle_2026-09-10.md: pre-registered rules, HEAD baseline
on the 3-year window (three pinned MD5s reproduced), cost ladder and
concentration facts, bucket screen (one cycle-2 candidate: M15 grade-A
SELLs), C1 H1 divergence->0 REJECTED, C2 M15 RSI-multiplier ladder =
stable plateau, seeding-depth measurement and the two shipped parity
fixes. CLAUDE.md: live fetch depth, backtester pad, 501 tests, the
2026-09-10 state entry; corrected the docs note (no PDF builds exist)
and recorded pyarrow as a dev-venv-only dependency.
Claude-Session: https://claude.ai/code/session_01NQDjW8rXYrJR4JDWMWKUij