═══ Compilation Result ═══
Profile: default
Catalogs (2): lake (arrow), warehouse (arrow)
Engines (2): eng1 (arrow), eng2 (arrow)
Adapters (0): none

─── Assembly ───
  📥 events (source) [eng1]
  ⚡ materialization: events -> agg_events (engine_instance_change: Engine changes from 'eng1' to 'eng2') [strategy: arrow]
  🔧 agg_events (sql) [eng2]
  ⚡ materialization: agg_events -> write_agg (engine_instance_change: Engine changes from 'eng2' to 'eng1') [strategy: arrow]
  📤 write_agg (sink) [eng1]

✓ compiled 3 joints (1/3 schemas) in <T>ms [introspection: 0 ok, 0 failed, 0 skipped]
