Revert "Refresh graph directly from Hub API"

Revert "Keep refresh job compatible with Python 3.9"

Keep refresh job compatible with Python 3.9

Refresh graph directly from Hub API

Deduplicate Hub models and datasets before import

Create refreshed database indexes in Community runtime

Download refresh pipeline outside lazy mount

Keep scheduled Job launcher below mount read limit

Harden mounted refresh script EOF

Simplify scheduled refresh dependency install

Fix scheduled refresh on Debian 11

Document scheduled Job permissions

Add weekly Hub database refresh pipeline