Frozen shrink_only_v1 mapping, lag-1, SPY BH baseline. LLM path excluded (cutoff contamination — forward only). Proceeds only with >=30 signal days overlapping the baseline.
Signal days in corrtrack history: 8; overlap: 0 (bar: >=30). Machinery self-test: OK.
Finding: INFEASIBLE (no verdict)
- The corrtrack news_sent history is days long (bot live 2026-08-28; yfinance window is shallow by construction). A 30-day proxy backtest cannot run — this is the known missing PIT headline archive (news_pilot.py limitations), now measured, not assumed.
- Nothing was tuned, no variant was tried, no p-value was computed. The F5 evidence path is forward shadow (Iter-2, 60d clock).
- Machinery for that shadow (lag-1 applier, fail-open counting) is asserted above and hermetic-tested in tests/test_edge_hunt24_f5_iter1.py.
Time: 0s.