00b1e663d9
- Fix dashboard metrics alternating to 0 by merging partial batches in gateway before broadcasting to WebSocket clients. The aggregator sends metrics in batches of 20, causing partial updates that overwrote each other. Gateway now maintains machine_metrics_cache that accumulates metrics across batches. - Remove misleading gRPC calls counter from internals page (only incremented on health checks, not actual metric flow). Replace with cached_machines counter showing tracked machines. - Update internals.html stats panel to show Events, Broadcasts, Clients, and Machines instead of gRPC calls.