Add in-memory remote player state tracking and disconnect handling to fake_client.py: validate and store transform packets by playerId (position, angle, movementType, cellId, worldspaceId, clientTime, serverTime, lastReceivedLocalTime), print readable per-player summaries, and remove players on disconnect packets. Also add warning/log helpers and route packets to the new handlers. Update server/README.md and docs/dev-log.md to document the new behavior, test results, and next steps (clientTime verification and disconnect broadcasting).