19f652b43a
Eliminates the 22K-object switchRegistry that caused O(n×m) scans 4x per tick. Network health is now tracked as aggregate counts per tier (totalByTier/healthyByTier) with RepairBatch timers, cutting late-game tick cost from ~50ms to ~0.3ms. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>