Run Astrid as a standalone component outside of the stage loop which communicates with the Execution Engine as Caplin, making full use of the new component-based implementation of the Polygon PoS.

RPCs and other parts of the code that read scrapped Spans, State Sync Events, Checkpoints, Milestones use the Astrid components for reading.

DB split:
Heimdall: contains Spans, Checkpoints, Milestones, Span Block Producer Selections.
Bridge: contains State Sync Events
Chaindata: contains only execution related data.