KRB phase 1 folder + meta-description test

Run order:
1. krb-phase1-folder-meta-test-20260612-134953-preflight.js (read-only)
2. krb-phase1-folder-meta-test-20260612-134953-live.js (mutating)

This tests the specific ordering Sylvain requested:
- Create/match the About Us directory page first
- Create/match the About Us folder immediately after
- Create/match child pages in that folder after the folder exists

The live script sets meta descriptions for the 3 pages and does not publish, delete, add body/components, or set meta titles.
