nx_room_diag.nx

nx_room_diag.nx -- X-ROOM: sovereign DETERMINISTIC multi-party room DIAGNOSTIC -- the "WHERE DOES IT SUCK" analyzer. When you test a room with real people, raw "it's choppy" is useless; this ingests per-PARTICIPANT per-tick metrics and pinpoints each person's DOMINANT problem AND the subsystem that fixes it, then ranks worst-first. Per participant columns: [loss_pm, jitter_ms, rtt_ms, delivered_kbps, target_kbps, layer]. Classifier (data-driven thresholds, rule 11) -> a PROBLEM CODE + a FIX subsystem: STARVED (layer==0, no video) -> nx_room_sfu (fairness allocation) LOSSY (loss_pm > LOSS thresh) -> nx_room_fec / nx_room_red JITTERY (jitter_ms > JIT thresh) -> nx_room_jitterbuf CONGESTED (delivered << target AND high rtt) -> nx_room_bwe UNDERSERVED (delivered << target) -> nx_room_simulcast / abr OK (none) -> - Severity ranks dimensions so the ONE thing most worth fixing surfaces first. EXCEED axis (honest): turns a live test into an ACTIONABLE, audit-replayable bottleneck report mapped to the exact sovereign fix -- not a vague "bad call". This is the SENSE layer the self-improving room loop needs. HONEST SCOPE: the analyzer; the live daemon + client must EMIT these per-participant samples (the instrumentation wiring) for a real test -- that is the next deploy step. main() is the SELF-VALIDATING GATE. Evidence -> knowledge/status/room_diag.log. license_tier: ORIGINAL