1- 2026-10-30 P0 passed: contract written.2- 2026-10-30 P1 passed: data audit; no exclusions. Decision: VFI choice variable = next-period output y' on the same grid; off-grid eval points interpolated linearly in ln y.3- 2026-10-30 P2/P3 passed: closed form baseline + VFI implemented in out/analysis.py.4- 2026-10-30 P4 passed: re-run identical; checks.md all pass.5- 2026-10-30 P5 passed: report and claims written; task complete.6