Scaffold per QRun-IO/qqq docs/QRUN-QBIT-REPO-STANDARD.md (CircleCI orb
0.6.8 workflows, release-rc caller, dependabot, wrapper, checkstyle,
community pointer files). First qbit code: CollaborationQBitProducer,
collaboration_feature_setting and collaboration_user tables, the
Collaboration app home with real counts, and the Postgres DDL script.
Design: QRun-IO/qqq#1136.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>