Extract shared brownfield patches, add the legacy revision, and default to upgrade-head plus skip of duplicate inline DDL (with legacy fallback if Alembic fails).
Co-authored-by: Cursor <cursoragent@cursor.com>
Extract ume_support/ume_router and alarms_router so main stays startup-focused, add topology fabric/views import surfaces, and gate managed-NE writes by ne:write.
Co-authored-by: Cursor <cursoragent@cursor.com>
