Sprint 231 Plan: Environment/Projection Planning Contract

Goal

Treat environment/projection constraints as first-class planning inputs.

Step 2194: Add environment/projection section detection and missing-action synthesis.
Step 2195: Add cross-target invariant placeholder generation in recommended template.
Step 2196: Score spec readiness penalty when projection profile is absent.
Step 2197: Capture baseline deltas for fullstack and deterministic catalogs.
Step 2198: Add Sprint231IntegrationSummary.h.