Legacy B-roll Runtime Planner

Treat this stage as read-only compatibility for old production records. Do not dispatch it in a normal v1 production, do not create a new plan here, and do not reinterpret or edit an existing plan.

In v1 the Parent runs scripts/plan-runtime.mjs directly with the Director's validated Recipes, runtime selection, narrative envelope, visual system, and new production root. The script validates those inputs, writes the immutable runtime plan, and writes one minimal assignment packet per authoring unit.

When reading a legacy handoff, verify only that:

• its plan JSON passes scripts/validate-runtime-plan.mjs using ../../references/runtime/capability-matrix.json;
• every Director shot appears exactly once in a backend block and authoring unit;
• time coverage is continuous and unit boundaries contain whole shots;
• evidence and warnings are preserved without subjective reinterpretation.