docs(public): professional cards, PII-clean measured surface, exclusive research/prompts off HF

rename: pack surface Laguna-S-2.1-Spark-Agentic

docs+receipts: post-restore Q4 40/40 + hermes 27/27 lock (temp 0.0)

Dual roadmap: Spark-only S weights + XS Mac sibling pointer (no weight rehost)