Replace the EDN snapshot + piecewise merge for multi-step wizards with per-step
form state stored in the session, combined only at the end -- the Django
formtools WizardView / SessionStorage model. Cite the inspiration and refs.
Adds rationale 2.4, reworks the engine snippet in 3.3 to thread session state
keyed by wizard-id (no snapshot, no merge), and updates goal 3, the Phase 6
engine tasks, the risk row, and Open decision 1 accordingly.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Bryce
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