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Josh Creek
9d8a8080ba
Extends net_debug_overlay.gd (Phase 1's RTT/offset display) with the rest of task 3.7's list: jitter (new RFC3550-style EWMA in NetworkManager, computed from raw per-sample RTT before Phase 1's own min-filtering, since that filter is deliberately jitter-insensitive by design), input buffer depth and input_lead (both already tracked client-side for task 3.3), snapshot loss (a new EWMA in networked_match.gd over each received snapshot's own server_tick gap - snapshots go out at a steady one-tick cadence, so a gap is direct evidence of a drop or reorder), snapshot age (computed on demand from the same bias-corrected tick estimate the interpolator itself uses), and bandwidth (new rolling per-second byte counters in MatchSim, on the two 60Hz hot-path channels only). Prediction error is deliberately omitted with a comment explaining why: there's no client-side prediction to measure until Phase 4. Verified values are live and plausible, not just present, by calling get_net_debug_stats() directly in a real two-process test and checking the numbers make sense: bandwidth matched the wire format's own byte math almost exactly (measured ~2400 B/s sent against a computed 40B x 60Hz, ~3540 B/s received against 59B x 60Hz), and buffer depth/lead/loss all moved in the correct direction between a clean LAN run and one under simulated 60ms latency + 10% loss. Full regression suite re-run clean.
