7.3.1 (2026-05-25) Bug Fixes add parameter type annotations to shared test fixture factories (2953adc) Documentation plan extract shared test fixtures (#208) (22fafed) retro: add planning stage notes for issue #208 (aaa9d5d) retro: add retro notes for issue #207 (3b97a5c) retro: add TDD stage notes for issue #208 (65d0606) update Phase 12 Step 4 to reference test/helpers/ (8e9e406)