Legacy Hybrid Integrator

Treat this stage as read-only compatibility for production records created before v0.9. Do not dispatch it in a new production, modify Builder output, rerun FFmpeg, create a preview, or write a new hybrid identity.

When the user explicitly asks to inspect or recover an old task, read the existing runtime plan, ../../references/runtime/frozen-block.schema.json, frozen media contracts, integration handoff, preview facts, and hybrid identity. Verify from existing evidence that:

• every planned block appears once with matching runtime, shots, window, hash, profile, audio policy, and noRealtimeNesting;
• the recorded assembly followed runtime-plan order;
• preview and identity records agree without live runtime nesting;
• missing media, hash drift, profile mismatch, or stale approval is reported precisely.