Pulse Curation Layer & UI — Three Layers per Category, Triage Per Item, Finalize on Demand

Three layers per category: immutable `raw_output`, live `curated_output`, and a `finalized_output` snapshot locked when triage is done.

• Spec
• Augment-It
• Curation
• Triage
• Response-Reviewer
• Pulse-Bundles
• Human-In-The-Loop
• Data-Model