I’ll resolve the fixed-geometry overlaps and floating copper first, then clean stale traces, route the remaining connections, and finish with a full ERC/DRC verification.

Copper geometry is clean. Routing preflight found 293 duplicate-via records from the imported layout; I’m removing those duplicates before routing so the router does not build on corrupted transitions.

Overlap and copper cleanup completed:

Routing is blocked by 293 duplicate-via records in the imported layout. The preflight exposes their coordinates but not enough UID/net data to safely remove only the duplicates, so I did not risk deleting valid vias. A dedicated duplicate-via cleanup capability or manual editor cleanup is required before safely routing the 54 airwires.