Add new notebooks (#106)

* screen notebook added

* add costs

* rename

* another rename

* add merge websites notebook

* add regulatory status agent_map notebook

Case study: 10k drug products classified by FDA regulatory status
using agent_map(). 99.97% success rate (3 failures out of 10k).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* add costs and other very  minor edits

* Rename one, and update titles, descriptions, and openings for the rest

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Dan Schwarz <danielschwarz26@gmail.com>

Author: 3 people

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